Can someone help me with these two questions

Can Someone Help Me With These Two Questions

Answers

Answer 1
4. The pressure of the inner core is higher than the outer core

5. The coolest layers are farthest from the core

Related Questions

Which Atom experiences a greater shielding effect, Magnesium (Mg) or chlorine (CI)?​

Answers

Answer:

To be stable, an atom or ion should have 8 electrons in the outer shell. This is called the octet rule.

Magnesium is unstable because a magnesium atom has 2 valance electrons in its 3rd shell.

Chlorine is unstable, because a chlorine atom has 7 valance electrons is its 3rd shell.

Chlorine has higher electronegativity than magnesium, so the 2 chlorine atoms will attract 2 electrons from a magnesium atom. This produces a +2 magnesium ion and two -1 chloride ions.

A) A Cl atom donates two electrons to a Mg atom  

B) An Mg atom donates two electrons to a Cl atom.  

C) A Cl atom donates one electron to each of the two Mg atoms.  

D) An Mg atom donates one electron to each of the two Cl atoms. YES

Atoms do not donate any electrons. When a chlorine molecule collides with a magnesium atom, each of the chlorine atoms grab an electron from the outer shell of the magnesium atom. You might think that the magnesium atom would be angry at the chlorine molecule. But, the magnesium atom is much “happier” as a stable +2 ion than a neutral atom. And the chlorine molecule is also “happier” as two -1 chloride ions.

Magnesium chloride is the name for the chemical compounds with the formulas MgCl2 and its various hydrates MgCl2(H2O)x. These salts are typical ionic halides, being highly soluble in water. The hydrated magnesium chloride can be extracted from brine or sea water. Magnesium chloride as the natural mineral bischofite is also extracted (solution mining) out of ancient seabeds; for example, the Zechstein seabed in northwest Europe. Anhydrous magnesium chloride is the principal precursor to magnesium metal, which is produced on a large scale. Hydrated magnesium chloride is the form usually used in prescription oral magnesium supplements.

We are the ones who messed with mother nature. Magnesium chloride was very stable (happy) when it was in the sea water. Humans decided to harvest the MgCl2 and rip it apart to produce little strips of magnesium metal for chemistry class.

In nature, “nobody” freely donates anything to “anyone”. The electrostatic forces in the atoms decide who get the electons.

Sometimes, I just get carried away as I answer peoples’ question.

I hope this helped you.

What is the chemical law?

Answers

Answer:

Chemical laws are those laws of nature relevant to chemistry. The most fundamental concept in chemistry is the law of conservation of mass, which states that there is no detectable change in the quantity of matter during an ordinary chemical reaction. Modern physics shows that it is actually energy that is conserved, and that energy and mass are related; a concept which becomes important in nuclear chemistry. Conservation of energy leads to the important concepts of equilibrium, thermodynamics, and kinetics.

Explanation:

Have A Wonderful Day !!

Answer:

Chemical laws are those laws of nature relevant to chemistry. ... The laws of stoichiometry, that is, the gravimetric proportions by which chemical elements participate in chemical reactions, elaborate on the law of conservation of mass.

Explanation:

Question 6
Use the mole concept to calculate the number of formula units that are in a 1.75-mol sample of NaCl.

Answers

Answer: There are [tex]10.5\times 10^{23}[/tex] formula units in 1.75 mol sample of NaCl.

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.

1 mole of NaCl contains = [tex]6.023\times 10^{23}[/tex] formula units

Thus 1.75 mol of NaCl contains = [tex]\frac{6.023\times 10^{23}}{1}\times 1.75=10.5\times 10^{23}[/tex] formula units

Thus there are [tex]10.5\times 10^{23}[/tex] formula units in 1.75 mol sample of NaCl.

The yard cat above is named "Yardley" for reasons obvious to his owner.
Yardley spends most of his time lounging in the back yard chasing
carpenter bees. But he could have been given any number of names
based on his appearance or behavior. Think for a few minutes. What
would you name him if he were your cat?

Answers

Answer:

For a cat name does matter as it keeps a charm when ever we call the name out. So it needs to be cherished as by a name so if it was me i would name it as Chinky.

What increases the salinity of the ocean surface water, causing it to sink
downward?
Help

Answers

Answer:

Thermohaline Circulation

Explanation:

The process is known as “Thermohaline Circulation”. In the Earth’s polar regions ocean water gets very cold, forming sea ice. As a consequence the surrounding seawater gets saltier, because when sea ice forms, the salt is left behind. As the seawater gets saltier, its density increases, and it starts to sink.

pick repel,or attract. were its circled

Answers

Opposites attract same sides repel

what is the molar mass of just the O in CO2?

Answers

Answer:

16 g/mol

Explanation:

In CO2, it means we have 1 mole of carbon and 2 moles of oxygen.

However, we want to find the molar mass of just a single mole of oxygen.

Now, from tables of values of elements in electronic configuration, the molar mass of oxygen is usually approximately 16 g/mol.

In essence the molar mass is simply the atomic mass in g/mol

An atom contains 8 protons, 8 neutrons and 8 electrons. A second atom contains
8 protons, 10 neutrons and 10 electrons. What can be said about these two
atoms?
A. Both atoms are neutral
B. The atoms are isotopes of each other
C. Both atoms are ions
D. These atoms cannot exist in nature

Answers

Answer:

B. Isotopes mean having differing number of neutrons but having the same amount of protons basically.

Explanation:

B. The atoms are isotopes of each other

Further explanation

Given

The first atom : 8 protons, 8 neutrons and 8 electrons

The second atom : 8 protons, 10 neutrons and 10 electrons

Required

Comparison

Solution

A. Atom is said to be neutral if the number of protons and electrons is the same

The first atom neutral

The second atom - anion : charge = -2(10 electron-8 proton)

B. isotopes = the same atomic number and different mass number

The first atom : atomic number = 8, mass number = 16

The second atom neutral : atomic number = 8, mass number = 18

Both : isotopes

C. First atom = neutral, second atom anion (charge = -2)

D. Can exist in nature

How many grams are in 2x10^24 formula Units of CaCO3

Answers

Answer:

332g

Explanation:

Given parameters:

Formula units  = 2 x 10²⁴

Unknown:

Mass of the compound = ?

Solution:

The formula of the compound is:

            CaCO₃

      6.02 x 10²³ atoms are contained in 1 mole of a compound

       2 x 10²⁴ atoms will be made up of [tex]\frac{2 x 10^{24} }{6.02 x 10^{23} }[/tex]   = 3.32mole of CaCO₃

 Mass of CaCO₃  = number of moles x molar mass

      Molar mass of CaCO₃  = 40 + 12 + 3(16) = 100g/mol

 Mass of CaCO₃  = 3.32 x 100  = 332g

What is the concentration of H+ ions at a pH = 2?
mol/L
What is the concentration of OH– ions at a pH = 2?
mol/L
What is the ratio of H+ ions to OH– ions at a pH = 2?
: 1

Answers

Answer:

0.01M = [H⁺]; 1x10⁻¹²M = [OH⁻]; Ratio is: 1x10¹⁰

Explanation:

pH is defined as -log [H⁺]

For a pH of 2 we can solve [H⁺] as follows:

pH = -log [H⁺]

2 = -log [H⁺]

10^-2 = [H⁺]

0.01M = [H⁺]

Using Keq of water:

Keq = 1x10⁻¹⁴ = [H⁺] [OH⁻]

1x10⁻¹⁴ / 0.01M = [OH⁻]

1x10⁻¹²M = [OH⁻]

The ratio is:

[H⁺] / [OH⁻] = 0.01 / 1x10⁻¹² =

1x10¹⁰

Answer:

1. 0.01 mol/L

2. 0.000000000001 mol/L

3. 10000000000:1

Explanation:

Density is defined by the equation d = m/v. Calculate the density of the wooden block, the rock, and the water by dividing the mass of each object by its volume.

Answers

Answer:

Density, d = 8.92 g/mL

Explanation:

Let mass of the wooden block, m = 46.83  g

The volume of the object, V = 5.25 mL

We need to find the density of the wooden block. The density of an object is given by its mass per unit volume.

density = mass/volume

[tex]d=\dfrac{46.83\ g}{5.25\ mL}\\\\=8.92\ g/mL[/tex]

So, the density of the wooden block is 8.92 g/mL.

Answer:

0.495 g/cm3

Explanation:

a. 24 m x 3.26 m
b. 120 m x 0.10 m
c. 1.23 m x 2.0 m
d. 53.0 m x 1.53 m
PLEASE SHOW WORK
round answers with correct significant figure.

Answers

Answer: a) [tex]78.2m^2[/tex]

b) [tex]1.2\times 10m^2[/tex]

c) [tex]2.5m^2[/tex]

d) [tex]81.1m^2[/tex]

Explanation:

Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

Rules for significant figures:

1. Digits from 1 to 9 are always significant and have infinite number of significant figures.

2. All non-zero numbers are always significant.  

3. All zero’s between integers are always significant.

4. All zero’s preceding the first integers are never significant.

5. All zero’s after the decimal point are always significant.

The rule apply for the multiplication is :

The least number of significant figures in any number of the problem determines the number of significant figures in the answer.

a) [tex]24m\times 3.26m=78.2m^2[/tex]    

b) [tex]120m\times 0.10m=1.2\times 10m^2[/tex]

c) [tex]1.23m\times 2.0m=2.5m^2[/tex]

d) [tex]53.0m\times 1.53m=81.1m^2[/tex]

Does it take shorter or longer time to travel when the velocity is low?

Answers

Answer:

yes

explanation:

yes because when the velocity is low, all the energy is low and nothing can't do nothing without energy

List 3 different sugars found in this product. *
3 points
INGREDIENTS / INGRÉDIENTS :
CORN MEAL, SUGAR, CORN BRAN, CORN SYRUP,
MALTODEXTRIN, FANCY MOLASSES, SALT, WHOLE OAT FLOUR.
BAKING SODA, NATURAL FLAVOUR, COLOUR (CAROTENE),
VITAMINS AND MINERALS: IRON, ZINC OXIDE, NIACINAMIDE,
d-CALCIUM PANTOTHENATE, THIAMINE HYDROCHLORIDE,
CHOLECALCIFEROL (VITAMIN D3), PYRIDOXINE
HYDROCHLORIDE, FOLIC ACID.
CONTAINS OAT INGREDIENTS. MAY CONTAIN SOY.
SEMOULE DE MAÏS, SUCRE, SON DE MAÏS, SIROP DE MAÏS,
MALTODEXTRINE, MÉLASSE QUALITÉ FANTAISIE, SEL, FARINE
D'AVOINE ENTIÈRE, BICARBONATE DE SODIUM, ARÔME
NATUREL, COLORANT (CAROTENE),
VITAMINES ET MINÉRAUX : FER, OXYDE DE ZINC,
NIACINAMIDE, d-PANTOTHÉNATE DE CALCIUM,
CHLORHYDRATE DE THIAMINE, CHOLÉCALCIFÉROL (VITAMINE
D3), CHLORHYDRATE DE PYRIDOXINE, ACIDE FOLIQUE,
CONTIENT DES INGRÉDIENTS DE L'AVOINE. PEUT CONTENIR DU SOYA.

Answers

Answer:

Sugar (Sucrose), Corn Syrup (Glucose), Molasses (C6H12NNaO3S)

Explanation:

Each of these is a sweetener.

Describe the difference
between the smooth
Endoplasmic Reticulum
(ER) and rough
Endoplasmic Reticulum
(ER)

Answers

Answer:

Smooth endoplasmic reticulum (SER) is a type of endoplasmic reticulum consisting of tubular vesicles that lack ribosomes on the outer surface and is involved in the synthesis and storage of lipids. Rough ER has ribosomes on the outer surface. Smooth ER does have riboszomes on the outer surface.

Explanation:

Describe how wind, water, ice and gravity move soil through erosion below.
PLEASE ANSWER!!!! :D

Answers

Answer:

Most erosion is performed by liquid water, wind, or ice (usually in the form of a glacier). If the wind is dusty, or water or glacial ice is muddy, erosion is taking place. The brown color indicates that bits of rock and soil are suspended in the fluid (air or water) and being transported from one place to another. This transported material is called sediment.

Explanation:

we are lerning this tooo

Which combination of elements produce compounds with a large electronegativity difference and high conductivity?

Answers

Answer:

C. H2(g)

Explanation:

i dont know the answer pls help me​

Answers

Answer:

Unicellular

Explanation:

Unicellular organisms are made up of only a single cell

3. If 12.5 grams of copper are reacted with excess chlorine gas, then 25.4 grams of
copper (II) chloride are produced. Calculate the theoretical yield and the percent
yield. Cu + Cl2 → CuCl2

Answers

Answer:

Percent yield = 99.6%

Theoretical yield = 25.5 g

Explanation:

Given data:

Mass of copper = 12.5 g

Mass of copper(II) chloride produced = 25.4 g

Theoretical yield = ?

Percent yield = ?

Solution:

Chemical equation:

Cu + Cl₂       →        CuCl₂

Number of moles of copper:

Number of moles = mass/molar mass

Number of moles = 12.5 g / 63.5 g/mol

Number of moles = 0.19 mol

Now we will compare the moles of copper and copper chloride.

                  Cu          :           CuCl₂

                     1           :               1

                  0.19        :           0.19

Mass of CuCl₂: Theoretical yield

Mass = number of moles × molar mass

Mass = 0.19 mol × 134.45 g/mol

Mass = 25.5 g

Percent yield:

Percent yield = (actual yield / theoretical yield )×100

Percent yield  = ( 25.4 g/ 25.5 g) ×100

Percent yield = 99.6%

7. A 10.0 cm3 sample of copper has a mass of 89.6 g. What is the density of copper?

Answers

Answer:

d = 8.96 g/cm³

Explanation:

Given data:

Volume of sample = 10.0 cm³

Mass of copper = 89.6 g

Density of copper = ?

Solution:

Formula:

d = m/v

d = density

m = mass

v = volume

by putting values,

d = 89.6 g/ 10.0 cm³

d = 8.96 g/cm³

Thomas calculates the volume of an object by multiplying the measurements 1.74 cm x 2.3 cm x 3.09 cm. Using significant figures, how should the answer be reported?

Answers

Answer:

12 cm³

Explanation:

Always round to the place of the number with the least amount of significant figures.

1.74 and 3.09 have three significant figures. 2.3 has two significant figures. Therefore, the answer will be rounded to two significant figures.

1.74 cm × 2.3 cm × 3.09 cm = 12.36618 -> 12 cm³

(The 3 in the tenths place is less than 5 so drop it and all the numbers to the right of it.)

Hope that helps.

4 Explain why some acids are safe to consume
while others are not.

Answers

Answer:

Household cleaners, antiseptics and battery juice are examples of toxic chemicals that you cannot consume because they have high acids concentrations. However some are very healthy such as critic acids found in oranges. :) Hope this helped.

Number 2 & 3 please !!<3

Answers

Answer:just for the ponits

Explanation:ima be a jenna

Which statement best describes the density of an atom's nucleus?
A The nucleus occupies most of the atom's volume but contains little of its mass,
The nucleus occupies very little of the ston's volume and contains little of its mass.
The nucleus occupies most of the stom's volume and contains most of its mass
The nucleus occupies very little of the ston's volume but contains most of its mass

Answers

Answer:

D. The nucleus occupies very little of the volume but contains most of its mass

Explanation:

Density is an intensive property as it does not depend on the quantity of the substances Whereas mass and volume are extensive property. Therefore,  the nucleus occupies very little of the volume but contains most of its mass. The correct option is option D.

What is density?

Density tells about the compactness of the substances, how much dense is the substances in other words. Object that is more denser than water they just sink in the water.

Mathematically,

Density = Mass of an atom's nucleus ÷volume marked on the graduated cylinder

Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.  The nucleus occupies very little of the volume but contains most of its mass.

Therefore,  the nucleus occupies very little of the volume but contains most of its mass. The correct option is option D.

To know more about density, here:

https://brainly.com/question/16894337

#SPJ2

please help!! I’m really confused because it’s actually supposed to be called occluded front but the definition is true.

Answers

I believe it is False

A compound XO exists in nature. A scientist wanted to prepare the same compound in his lab based on the law of constant proportion but the formula of the compound that he prepared was found to be XO2. Which postulates of the law of constant proportion did he violate?

Answers

Answer:

The postulate that all pure samples of a particular chemical compound contain the same elements  combined in the same proportion by mass.

Explanation:

The law of constant composition (or definite proportion) states that all pure samples of a particular chemical compound contain the same elements  combined in the same proportion by mass.

This law implies that irrespective of the source of the sample of the compound or the method by which the sample was prepared, as long as the sample is pure, the elements present in the compound are always combined in a specific ratio by mass. For example, water has the molecular formula H₂O. Irrespective of the water source, for example, tap-water, lake, stream, river or rainfall, each pure sample of water will have the constant composition of 2 atoms of hydrogen to one atom of oxygen.

The given compound exists as XO in nature. Therefore, irrespective of the source or method of preparation, every sample of this compound should have the formula XO. Since the compound prepared by the scientist was XO₂, therefore, the postulate that all pure samples of a particular chemical compound contain the same elements  combined in the same proportion by mass was violated by the scientist. The scientist must have prepared a different compound of the elemental compositions.

What is an animal-like, unicellular protist called?

protozoan
euglenoid
slime mold
decompos

Answers

Answer:

protozoan

Explanation:

An animal - like unicellular protist is called a protozoan. Such organisms shows similarities with animals.

Protozoans are unicellular organisms. They are similar to animals in that they perform nearly all life functions that makes animals very unique. They are mostly heterotrophs which feed on foods that have been produced by autotrophs. Examples are flagellates and ciliates.

D. The ¬_____________________ converts food into energy. It is found in both plant cells and animal cells.

Answers

Answer:

I believe it’s the mitochondria

Explanation:

Answer:

Mitochondria

Explanation:

Ik bc i have the vocab for that question

Which products would form if chlorine gas was bubbled through a solution of sodium bromide?

a. Na and BrCl
b. Na snd BrCl2
c. Na and Br2
d. Na(cl)2 and Br2

Answers

Answer:

NaCl and Br2

Explanation:

Edge 2020

Answer:

The Answer is C: Na and Br3

Explanation:

is reacts with acid a chemical or physical property? (WORTH 30 Points.)

Answers

Answer:

Metals in general have they chemical property of reacting with an acid. Zinc reacts with hydrochloric acid to produce hydrogen gas. This is a chemical property. Chemical change results in one or more substances of entirely different composition from the original substances.

Metal reacts with acid is a chemical property.

Metals react with acids which causes the production of salt and hydrogen gas is released. This is a chemical property because the reactions of reactant produces new type of products which is totally change from the parent material or reactants. The  chemical property is refers to change of one type of matter into another type so we can conclude that reaction of metals with acid is a chemical property.

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