Answer:
B. How many of each atom are present in the compound
D. the simplified ratio of atoms in relation to each other
Explanation:
In a chemical formula, chemical elements or atoms are represented by a chemical symbol for example Fe for iron and Na for sodium, and the number of each atom is represented by a subscript such as CO2, where 2 is a subscript representing 2 atoms of oxygen.
A subscript represents the number of each atom in the compound and the simplified ratio of atoms in relation to each other. The simplified ratio of atoms in relation to each other means subscript shows the contribution of both the atoms in the compound, for example: N2 + 3H2 => 2NH3, it means the subscript showing the ratio or proportionate of atoms that is 2:2 for both nitrogen and hydrogen.
The subscript is always written below and to the right of the chemical symbol.
Hence, the correct answer is "B. How many of each atom are present in the compound and D. the simplified ratio of atoms in relation to each other"
Please help!!!
When 38 g of a metal at 92 °C is added to
43 g of water at 22°C, the temperature of the
water rises to 30°C. What is the specific heat
capacity of the metal? Assume no heat was
lost to the surroundings.
Answer in units of
J/g degrees C
The specific heat capacity of the metal : 0.610 J/g° C
Further explanationThe law of conservation of energy can be applied to heat changes, i.e. the heat received/absorbed is the same as the heat released
Q abs = Q received
Heat can be calculated using the formula:
Q = mc∆T
Q = heat, J
m = mass, g
c = specific heat, joules / g ° C
∆T = temperature difference, ° C / K
∆T = T(final temp) - T(initial temp)
mass of metal = 38 g
T initial metal = 92 °C
mass of water = 43 g
T final water = 30 °C
T initial water = 22°C
c water = 4.18 J/g° C
Heat absorbed by water[tex]\tt Q=m.c.\Delta T\\\\Q=43\times 4.18\times (30-22^oC)\\\\Q=1437.92~J[/tex]
the specific heat capacity of the metalQ water = Q metal
[tex]\tt 1437.92=38\times c\times (92-30)\\\\c=0.610~J/g^oC[/tex]
Which quantum number describes the orientation of an orbital within a sublevel?
Explanation:
Each orbital within a particular sublevel is distinguished by its value of ml. This quantum number may be more aptly named the orbital orientation quantum number. In each energy sublevel (designated by l) there are 2l+1 possible independent orientations of the electron cloud.
Answer:
[tex]m_l-magnetic[/tex]
Explanation:
The principal energy level, n, tells us which shell it is in and the total energy of the electron.
The angular momentum (azimuthal), l, tells us which sublevel/subshells the electron is in.
The magnetic, m sub l, tells us the orientation the electron is spinning.
A large marble is dropped in a graduated cylinder with 45 mL of water in it. The water level increased to 61 mL. What is the volume of the marble?
Answer:
The answer is 16 mLExplanation:
The volume of the marble can be found by using the formula
volume = final volume of water - initial volume of water
So we have
volume of marble = 61 - 45
We have the final answer as
16 mLHope this helps you
Answer:
16mL
Explanation
What is Chlorofluorocarbons?
Answer:
Chlorofluorocarbons and hydrochlorofluorocarbons are fully or partly halogenated paraffin hydrocarbons that contain only carbon, hydrogen, chlorine, and fluorine, produced as volatile derivative of methane, ethane, and propane. They are also commonly known by the DuPont brand name Freon.
Explanation:
Answer:
Explanation: Chlorofluorocarbons and hydrochlorofluorocarbons are fully or partly halogenated paraffin hydrocarbons that contain only carbon, hydrogen, chlorine, and fluorine, produced as volatile derivative of methane, ethane, and propane. They are also commonly known by the DuPont brand name Freon
hope that helps.↑Use the rules of significant figures to report the answer to this math question: (5.003 x 10^4) - (6.059 x 10^3) + (9.23 x 10^2) =
Answer:
44894
Explanation:
what is a well-tested, explanation that unifies a broad range of observations and hypotheses
Which of the following is a practice that shows you have intellectual honesty?
A. letting your beliefs influence your results
B. avoiding plagiarism of the works of others
C. making up data to support a special cause
D. copying the work of other scientists and claiming it as your own
Answer:
Avoid plagiarism and the work of others
Explanation:
I took the test and got it right. Hope this helps :)
Avoiding plagiarism of the work of others shows that you have intellectual honesty. So the correct option is B.
What is plagiarism?
The act of presenting someone else's ideas or work as your own, with or without that person's agreement, by integrating it into your work without giving it due credit, is known as plagiarism. This definition applies to all works, both published and unpublished, whether they are in manuscript, print, or electronic form.
Plagiarism can be willful, careless, or accidental. Plagiarism that is deliberate or careless is prohibited under exam regulations and is grounds for disciplinary action. In addition to text, additional media such as computer code, pictures, graphs, etc. must also include credit for the ideas and works of others.
It equally applies to both published and unpublished text and data taken from books and journals, lectures, theses, and other students' writings. Text, information, or other materials that you take from websites must also be credited.
Learning and using the rules of good academic practice from the start of your university career is the best way to prevent plagiarism.
Therefore the correct option is B.
Read more about plagiarism, here
https://brainly.com/question/17990253
#SPJ2
Which of these is a physical change in shape?
A. Digesting food
B. Cooking an egg
C. Breaking a glass
D. Dissolving salt
Which properties change the composition of a substance?
A chemical properties
B physical properties
C neither chemical nor physical properties
D chemical and physical properties
Answer:
D. Chemical and physical properties
Which waves have the highest frequencies?
A. microwaves
B.UV
C. waves with the lowest energy
D. waves with the highest energy
Answer:
D. Waves with the highest energy
Explanation:
The more energy the higher the frequency. More specifically there will be more energy per photon.
Microwaves are on the low end of the electromagnetic spectrum while UV is higher but there are more waves with more energy such as gamma rays.
At every depth, soil composition remains the same.
O
True
O False
Answer:
false
Explanation:
Hope the answer was usefull for us
Answer:
false. there is the surface soil, which has a lot of partly decayed stuff, topsoil, which has minerals and organic material, subsoil, which is made from sand, silt, and clay that hasn't been broken down, and parent material, which is the place where not much living things live in, except for gigantic tree roots. then there is the bedrock, which is; you guessed it:rock entirely.
Explanation:
What questions might remain that will one day be answered by new technology?
Answer:
Can we find a safe cure for cancer?
Explanation:
pls mark brainliest
Describe the transmission of sound through solids,liquids,and gases.
I tihink it will help you
Once upon a time, Walter the water molecule was traveling around Linda's blood. He was enjoying moving around wherever he wanted. One day, Walter decided to visit some cells. He traveled in and out of the cells as he pleased. Walter decided that he liked the cells so much that he wanted to stay inside and rest in the vacuole. However, as the day went on, Walter felt a change happening around him. Linda had eaten some VERY salty popcorn. Walter LOVED Sally the salt molecule and felt a magnetic attraction to her. The closer the salt came to the cell, the quicker Walter's love for Sally pulled him out of the cell and towards the salt.
Answer:
This story that is related to the movement of water in relation to the amount of solute seeks to explain the process of OSMOSIS in a very interesting way.
Explanation:
The OSMOSIS process is a process where water diffuses from a compartment with fewer solutes to one with higher solutes, that is why the osmotic intention is to balance the concentrations and molarities between both compartments, this is called osmotic balance.
For this to happen, a highly water-permeable barrier is needed.
With an average acceleration of 0.50 m/s?, how long will it take a cyclist starting from
rest to reach 13.5 m/s?
Answer:
t = 27 s
Explanation:
Given data:
Average acceleration = -0.50 m/s²
Time taken to reach to the 13.5 m/s = ?
Solution:
Formula:
Vf = V₀ + at
Vf = 0
V₀ = 13.5 m/s
a = -0.50 m/s²
Now we will put the values in formula.
0 = 13.5 m/s - 0.50 m/s²t
0.50 m/s²t = 13.5 m/s
t = 13.5 m/s / 0.50 m/s²
t = 27 s
2. Calculate the density of a rock that has a mass of 21.58 grams and causes the water in a
graduated cylinder to rise from 20.0yl to 25.4 ml.
Answer:
4.00 g/mL
Explanation:
Density is mass divided by volume (g/mL).
Mass of rock = 21.58
Volume of rock = 25.4 - 20.0 = 5.4mL
Density of rock = 21.58g / 5.4mL = 3.99629 g/mL
Round to the lowest number of significant figures which is three = 4.00 g/mL
How do you think chemical change is defined?
Answer:
A chemical change happens when one chemical substance is transformed into one or more different substances,
Explanation:
What is the mass in grams of o.0135
mol of the element sodium, Na?
Answer:
0.311g
Explanation:
n= m
M
where n is moles
m is mass of substance
M is molar mass
Mn = m
0.0135×23=m
0.311=m
Which animal would you want to swim with the most, Dolphin or A White Whale?
Answer:
White whale
Explanation:
Just because I never seen a white whale:)
An organism that has two identical alleles (like two capital “T’s” or two lowercase “t’s” for example) is called
Answer:
h, o, m, o, z, y, g, o, u, s
Explanation:
h, o, m o z y g o u s- T, T or t, t
H, e, t e r o z y g o u s- T, t
I put the commas there so it would let me submit, because it said I put bad words for some reason...
ANSWER WITHOUT THE COMMAS LOL
How to find the number of atoms?
To find the number of atoms, we multiple the number of mols by Avogadro's number, about 6.02x10^23
Mark Brainliest!
Answer:
to calculate the numbers of atoms in a sample, divide it's weight in grams by the amu atomic mass from the periodic table, then multiply the result by avogadro's number: 6.0 × 10^24
Convert 427 Liters of CO2 to moles.
Answer:
9.702450607255294
.....0
Requires a medium to travel (travel fastest through solid-like metal train tracks A Waves B Sound Waves C Light Waves D matter
Answer:
b
Explanation:
becuase of sound waves
what type of energy is a orange being crushed
Answer:
Orange juice
Explanation:
what do you mean by work
Answer:
work is something u are working hard to get money or you are dedicated to it to have a daily wage
8.90 kg is what in grams
Answer:
It would be 8900 grams
Answer:
8900 Grams
Explanation:
1 kg = 1000 grams
8.90 x 1000=8900
The density of ice is 0.92 g/cm3 and the density of rubbing alcohol is 0.80 g/cm3. If an ice cube is placed in a container of rubbing alcohol, the ice cube will
Question 7 options:
a) float in the rubbing alcohol with none of the ice cube submerged.
b) sink to the bottom of the container.
c) move up and down in the rubbing alcohol.
d) float in the alcohol so that most of the ice cube is below the surface of the liquid.
Answer:
Option B. Sink to the bottom of the container.
Explanation:
From the question given above, the following data were obtained:
Density of ice = 0.92 g/cm³
Density of rubbing alcohol = 0.80 g/cm³
From the density of both substance given, we can see clearly that the ice has a higher density when compared with the rubbing alcohol.
Thus, If an ice cube is placed in a container of rubbing alcohol, the ice cube will not float rather, it will sink to the bottom of the container because the ice has a higher density than the rubbing alcohol.
density of a piece of wood that has a measurement of 24 cm3 and 768 g
Answer:
The answer is 32 g/cm³Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 768 g
volume = 24 cm³
We have
[tex]density = \frac{768}{24} \\ [/tex]
We have the final answer as
32 g/cm³Hope this helps you
Answer:
The density of wood is 32 g/cm³.
Explanation:
Given data:
Mass of wood = 768 g
Volume of wood = 24 cm³
Density of wood = ?
Solution:
Density is equal to the mass divided by its volume.
Formula:
d = m/v
d = density
m = mass
v = volume
d = 768 g/ 24 cm³
d = 32 g/cm³
The density of wood is 32 g/cm³.
A young girl has blue eyes.
Which statement explains how the young girl inherited her blue eye color?
A. The girl received proteins from her mother and father that coded for blue eye color.
B. The girl received blue pigments from her mother and father that formed her blue eye color.
O c The girl received cells from her mother and father that blended together to form her blue eye color.
D. The girl received chromosomes from her mother and father containing DNA that coded for blue eye color.
Answer:
D
Explanation:
( I hope that this helps )
Answer:
The answer is d
Explanation:
to determine the dependent variable, what question should you ask yourself?