Answer:
1.75m/s or 6.3km/hr
Explanation:
here,
acceleration (a) = 0.7m/s^2
mass (m) = 30g
time (t) = 2.5s
initial velocity (u) = 0m/s
final velocity (v) = ?
now,
v = u + at
or, v = 0 + 0.7 * 2.5
hence, Final velocity (v) = 1.75 m/s
if u want to convert to km/hr
then,
1.75 * 3.6 (we know that 1m/s = 3.6km/hr)
= 6.3km/hr
Why water in considered as compound?
Answer with Explanation:
Water is a compound because it consists of two types of atoms (Hydrogen and Oxygen) that are chemically bonded. An "element" only consists of one type of atom, therefore, water is not an element but a compound. Its chemical formula is: [tex]H_{2} O[/tex]. This means that water consists of 2 atoms of Hydrogen that are bonded to an atom of Oxygen. Take note that a compound is different compared to the elements that it is made of. For example, water is essentially liquid in its form but it is different from the atoms of Hydrogen and Oxygen, which are gas in form.
Answer:
Water is a compound. It contains more than one element: hydrogen and oxygen atoms are joined together; as illustrated in the video clip Elements and Compounds, above. ... Water is not simply a mixture of hydrogen and oxygen; it contains hydrogen and oxygen atoms linked together in an ordered way.
Subject: Chemistry
whoever does this right will give the brainliest <3)
Answer:
1 A
3 main types of bond are
Ionic bond ( formed due to complete transfer of electron between atoms(
Covalent bond ( formed by mutual sharing of electron)
Metalic bond ( present in the metals due to mobile electrons)
1 B bond in CaO is ionic bond formation in attached image
1 C hydrogen bond with nitrogen is covelent NH3 ammonia is formed because a bond between two non metals is expected to be covalent
More their electronegativity difference between hydrogen and nitrogen is less than 1.7 that makes it covalent
Explanation:
Answer: This looks tough
Explanation:
Is the trend in reactivity for nonmetals the same as the trend in reactivity for metals?
Answer:
no
Explanation:
In Non-metals
Period - reactivity increases as you go from the left to the right. Group - reactivity decreases as you go down the group
In Metals
Reactivity increases down a group because as nuclear shielding increases and the nucleus' hold on the valence electron weakens, therefore it is easier to remove valence electrons.
chemical formula of magnesium
oxide using Criss cross method
Answer:
Crisscross method is simply writing the charges crossly near each element. Since oxidation number of Mg (metal) is +2 and oxygen (nonmetal) is -2, if we cross them and write next to each; we get Mg2O2 .
Which covalent bond is the most polar?
a) S-O
b) C=0
c) Se-F
d) H-O
e) O=O
how many atoms are in a compound
Answer:
Compounds are made of two or more atoms of different elements,
Explanation:
Answer:
6.022×1023 atoms —1.00 mol of atoms.
Explanation:
Which of these electron configurations is not possible?
Answer:
D
Explanation:
Electrons are being filled according to the increasing other of their sublevel energy
in terms of their electron configurations, why is cesium more likely to lose its valence electron than potassium?
use the term “shielding” in your response if possible
Explanation:
use the term electron sheilding, the more electrons between the valence el3ctron and nucleus the easier to lose the valence electron (more sheilding = easier to lose)
Is honors high school chemistry hard? Is it hard mathematically? please answer ASAP i have to put in my courses for next year.
Explanation:
yes its hard if you don't pay attention.
Yes, the math is harder but chemistry is not it's really fun the math does get harder tho.
How much silver phosphate is produced if 10 g of silver acetate is reacted with excess sodium phosphate?
Answer:
Calculate the mass of silver phosphate produced if 30.0 grams of silver acetate completely reacts with sodium phosphate.
According to stoichiometry of the balanced chemical reaction between silver phosphate and silver acetate 8.359 g silver phosphate is produced if 10 g of silver acetate is reacted with excess sodium phosphate.
What is stoichiometry?It is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.In the given reaction 500.73 g of silver acetate produces 418.58 g silver phosphate, thus 10 g silver acetate is produced when 10×418.58/500.73 =8.359 g.
Thus, 8.359 g silver phosphate is produced if 10 g of silver acetate is reacted with excess sodium phosphate.
Learn more about stoichiometry,here:
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The sum of all the potential energy and kinetic energy in an object is equal to it's
Answers Choices: A. Thermal Energy B. Kinetic Energy C.Potential Energy D. Force PLEASE HELP DUE TODAY
Answer:
B. kinetic energy
Explanation:
The sum of kinetic energy and potential energy of an object is its total mechanical energy.
Which of the following is an example of a chemical reaction?
Answer:
where is the option I can't see plz give the option first the I try to give answer
How do the force factors compare to the products of the masses?
Answer:
The force factors are equal to the first numbers of the products of the masses in scientific notation.
Explanation:
Ex. 1.0 x 10^5 kg^2 then the force factor would be 1.
ex. 3.0 x 10^12 kg^2 then the force factor would be 3.
To solve this we must be knowing each and every concept related to scientific notation and its calculations. Therefore, in scientific notation, the force factors seem to be equivalent to the first digits of the masses' products.
What is scientific notation?Mathematics is a way of representing numbers using a decimal number ranging from one to 10, but not 10 multiplied by a factor of 10. The most common type of mathematical notation is All numbers in scientific notation are expressed in the generic form N 10m.
In scientific notation, the force factors seem to be equivalent to the first digits of the masses' products.
Example1 1.0 x 10⁵ kg² , force factor is 1.
Example2 3.0 x 10¹² kg² ,force factor is 3.
Therefore, in scientific notation, the force factors seem to be equivalent to the first digits of the masses' products.
To learn more about scientific notation, here:
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Which of the following scenarios would not prompt the cell to start dividing
Answer:
what r the options??????
Living Things and Energy
1. Identify one reason why all plants need energy.
A. to produce new cells and structures
* B. to absorb sunlight
C. to absorb oxygen
D. to release carbon dioxide
Try Again
What are 1a 3b and 7a explains on the periodic cable
Answer:
Explanation:
1a=group 1 elements(H,Li,Na,K....)
3b=group 3 elements (Sc,Y,La....)
7a=group 17 elements (F,Cl,Br,I....)
Plants give off oxygen as part of photosynthesis. Explain the impact of this process on humans?
Answer:
i think it haven't impact because oxygen is very sensitive for our life and from plants there is so many kinds of food sources soo
b. How do metals and non-metals differ chemically?
1
Need help!!! Don’t understand
How many moles in 435 liters of Krypton gas at STP?
19.4 mol Kr
General Formulas and Concepts:Chemistry
Stoichiometry
Using Dimensional AnalysisGas Laws
STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 KMath
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right Explanation:Step 1: Define
435 L Kr at STP
Step 2: Identify Conversions
[STP] 22.4 L = 1 mol
Step 3: Convert
[tex]435 \ L \ Kr(\frac{1 \ mol \ Kr}{22.4 \ L \ Kr} )[/tex] = 19.4196 mol Kr
Step 4: Check
We are given 3 sig figs. Follow sig fig rules and round.
19.4196 mol Kr ≈ 19.4 mol Kr
What is an acid in Science
Answer :An acid is any hydrogen containing substance
Explanation: i hope it helps i got a little help from a friend
what is diatomic element?
Answer:
it is molecular of an elements that consists two atoms
Jane believe that plate tectonics is a theory, and Mario believes it is a law. Which of the following best support Jane's argument?
Answer:
A
Explanation:
i did this and its right
Compare the atomic radii of neutral atoms 7N,8O,11Na and 12Mg and expalin briefly
As the sun sets, the temperature of the room decreases. Explain how this affects the particle motion of the gas particles in the room. Be sure to include collisions, kinetic energy, pressure, and thermal energy in your answer.
Answer:
Heres a very LONG answer-
The real answer:
Its in the kinetic-molecular theory, the temperature of a substance is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles.
There is a mixture of three gases. We know the total pressure is 2.50 atmosphere and the pressure of the oxygen and the nitrogen in the mixture are 0.52 atmosphere and 0.84 atmosphere. The jar containing the gases has a volume of 25.0 liters and is at a temperature of 32 degrees Celsius. What are the pressure and the number of moles of carbon dioxide in the container?
Answer:
1.14 atm and 1.139 mol
Explanation:
The total pressure of the container is equal to the sum of the partial pressure of the three gasses:
P = Poxygen + Pnitrogen + Pcarbon dioxide2.50 atm = 0.52 + 0.84 + Pcarbon dioxideNow we solve for the pressure of carbon dioxide:
Pcarbon dioxide = 1.14 atmTo calculate the number of CO₂ moles we use PV=nRT:
P = 1.14 atmV = 25.0 Ln = ?R = 0.082 atm·L·mol⁻¹·K⁻¹T = 32 °C ⇒ 32 + 273.16 = 305.16 K1.14 atm * 25.0 L = n * 0.082 atm·L·mol⁻¹·K⁻¹ * 305.16 K
n = 1.139 molWhen calculating the amount of product formed during alcohol fermentation, one mole of ethanol is chemically equivalent to what volume of CO2 (g) measured at 1 atm and 273 K
Answer:
44.8 dm^3
Explanation:
The equation for the fermentation of glucose is;
C6H12O6 -----> 2C2H5OH + 2CO2
This means that two moles of ethanol carbon dioxide are produced.
If 1 mole of gas at STP occupies 22.4 dm^3, then two moles occupies; 22.4 dm^3 × 3 = 44.8 dm^3
Which organisms are typical decomposers?
Answer:
Insects, bacteria and fungi
Explanation:
If 4.2 g of water is actually produced, what is the percent yield?
Answer:
23.33%
Explanation:
from
percent yield=(mass÷total mass )×100%
Choose all that are correct about the elements in the column highlighted in blue
in the periodic table below (there are FOUR correct answers)
Answer:
1. Are Metals
2. Are Solids
3. Are Un-reactive
4. Have 18 valence electrons
Explanation:
In a color coded periodic table of the components, the crate for every component is colored. This tone speaks to the classes of components, which incorporate metals, metalloids and non-metals. All in all, the color blue is used for metals, orange for metalloids and green for non-metals. The periodic table might be further tone coded to incorporate different gatherings, for example, transition metals, rare earths, alkali metals, alkaline earths, halogens and noble gases.
The modern periodic table coordinates components by their nuclear number, which is extraordinary to every component. The nuclear number speaks to the quantity of protons in a particle of the component. In the cutting edge occasional table, the nuclear number increments from left to right and through and through. The occasional table is likewise coordinated into periods and groups. Periods are the rows and groups are the columns. The components in every period start with metals on the left side, at that point move to metalloids and afterward to non-metals on the right. The components contained in each group have comparative actual properties.