Which describes a value for density

Which Describes A Value For Density

Answers

Answer 1
the correct answer is b.

Related Questions

A chemist adds 600.0mL of a 0.444/gL calcium sulfate CaSO4 solution to a flask. Calculate the mass in grams of calcium sulfate the chemist has added to the flask. Be sure your answer has the correct number of significant digits.

Answers

Answer:

0.266 grams of calcium sulfate

Explanation:

We can calculate the mass of calcium sulfate added using the given volume and concentration of the solution:

First we convert 600.0 mL to L ⇒ 600.0 mL equals 0.6000 L (600 ÷ 1000).

0.444 g/L * 0.6000 L = 0.266 g

Thus the answer is 0.266 grams of calcium sulfate.

Is Gold (Au) soluble?

Answers

Answer:

yes

Explanation:

Electromagnetic waves travel because of ____

Answers

because they need a medium to travel they can travel everywhere if they got the medium

The half life of iodine-125 is 60 days. What fraction of iodine-125 nuclides would be left after 360 days?

Answers

Explanation:

The half-life is the time taken for a radioactive substance to decay to half of its original composition.

    Let us assume that the original amount is x atoms;

                     Half - life   = 60days

Days                          Composition           Half-life number

0                                         x                                   0

60                                   x/2                                    1

120                                  x/4                                    2

180                                   x/8                                   3

240                                  x/16                                   4

300                                  x/32                                  5

360                                   x/64                                6

The fraction that would be left after 360 days will be [tex]\frac{1}{64}[/tex]

How many liters are in 7.41 x 1026 atoms of helium (He) at STP?

Answers

Answer:

Explanation: Avogadro number,N, = 6.02214076*10^23per mole —> 22.71L

—>( 7.41*10^26/N)*22.71 = 22.79*10^3 = 22,790L

How many grams of water are produced when 37.7 g of hydrogen peroxide (H2O2) decomposes into oxygen gas and water?

Answers

Answer:

Mass of water produced = 19.8 g

Explanation:

Given data:

Mass of hydrogen peroxide = 37.7 g

Mass of water produced = ?

Solution:

Chemical equation:

2H₂O₂      →        2H₂O  + O₂

Number of moles of H₂O₂:

Number of moles = mass/molar mass

Number of moles = 37.7 g/ 34 g/mol

Number of moles = 1.1 mol

Now we will compare the moles of H₂O₂ and H₂O from balance chemical equation in order to determine the moles of water formed.

                                   H₂O₂      ;           H₂O

                                      2         :             2

                                     1.1         :          1.1

Mass of water formed:

Mass = number of moles × molar mass

Mass = 1.1 mol × 18 g/mol

Mass = 19.8 g

use scientific notation to solve

Answers

5.8x1015
Hope this helped :)

How many moles are in 1.23 x 1024 molecules of oxygen gas.

Answers

Answer:

2.04moles

Explanation:

Given parameters:

Number of molecules  = 1.23 x 10²⁴molecules

Unknown:

Number of moles of oxygen gas = ?

Solution:

To solve this problem;

                  6.02 x 10²³ molecules makes up 1 mole of any substance

                1.23 x 10²⁴molecules will make up [tex]\frac{1.23 x 10^{24} }{6.02 x 10^{23} }[/tex]   = 2.04moles

6.02 x 10²³ molecules makes up 1 mole of any substance

               1.23 x 10²⁴molecules will make up = 2.04moles

what is a difference between water and wind

Answers

well i mean water is a liquid? —and wind is just.. air?

Answer:

You could have looked it up, but here ya go...

Explanation:

Wind is a type of dry deposition method. If original soil is eroded and wind exists, soil particles move via wind (sometimes it is called dust transport) and finally are deposited at final destination regions/areas. However, water erosion occurs when rainfall or hail occurs.

Hope this Helped! :)

US
What is the percent of H in
NH3?
(H = 1.008 amu, N = 14.01 amu)
[?]%

Answers

Answer:

17.6

Explanation:

Answer is explained above

3/17*100=17.6
It would be 17.6%.

what is the thing that you change in an experiment so that you can study the result of the change its called?​

Answers

it’s the independent variable

1. What are the two effects of the continental plate/continental plate convergent boundary?

2. Where can you find an example of this type of divergent boundary? Which country, continent or ocean?

Answers

Answer

oh you again?

Explanation:

(9) How many moles of oleum in 1780. g of oleum? - Write an equation to summarize the process.

Answers

Answer:

1. 10moles

2. Find the summarized equation below

Explanation:

Mole = mass ÷ molar mass

Molar mass of oleum (H2S2O7) = 1(2) + 32(2) + 16(7)

= 2 + 64 + 112

= 178g/mol

According to the information provided, the mass of oleum is 1780g, hence, the number of moles in it is:

Mole = 1780/178

Mole = 10moles

2. The summarized equation of the contact process is:

1) S + O2 → SO2

2) 2SO2 + O2 → 2SO3

3) SO3 + H2SO4 (conc. sulfuric acid) → H2S2O7

4) H2S2O7 + H2O → 2H2SO4 (dilute sulfuric acid)

___________ changes affect the nuclei (nucleus) of an atom, which produces new elements. (A Nuclear (B Chemical (C Physical

Answers

Answer:

A

Explanation:

matter can undergo chemical reactions and nuclear reactions. which properly is conserved in nuclear reactions?​

Answers

Answer:change in number of atoms

Explanation:AP3X

Measure that affects the thermal energy of matter but not it's temperature. ​

Answers

Answer: mass

Explanation:

air is trasferred from 75 L tank where the pressure is 125 psi and the temperature is 288 K to a tire with a volume. of 6.1 L and a pressure of 25 psi. what is the new temperature ?

Answers

Answer:

4.7K

Explanation:

Given parameters:

Initial volume  = 75L

Initial pressure  = 125psi  

        to atm gives 8.5atm

Initial temperature  = 288K

New volume  = 6.1L

New pressure  = 25psi

        to atm gives 1.7atm

Unknown:

New temperature = ?

Solution:

To solve this problem, we use the combined gas law which is given below:

        [tex]\frac{P1 V1}{T1}[/tex]    = [tex]\frac{P2 V2}{T2}[/tex]  

P, V and T are pressure, volume and temperature

1 and 2 are initial and new states

                  [tex]\frac{8.5 x 75}{288}[/tex]   = [tex]\frac{1.7 x 6.1}{T2}[/tex]

        T2  = 4.7K

according to the bohr model of an atom, what happens when an electron moves from the second energy level to the third energy level and then back to the second energy level?​

Answers

Answer:

when the atom moves to the third energy level, its energy increases. However, when it goes back to the second energy level its overall energy decreases.

Explanation:

the smallest (or innermost) energy level has the least amount of energy and the largest (or outer most) level needs the most amount of energy. In order for the electron to move from one level to the other, it would need to match the energy of that level.

What is Sr(NO3)2 + ZN ?

Answers

Answer:

strontium nitrate

Explanation:

hope this helps you....:)

Mr. Smith wanted to see if the color of light shined on a plant had an effect on the number of leaves it had. He gathered a 2
groups of the same species of plants, gave them the same amount of water, and did the test for the same amount of time.
On one group of plants he used white light. On the second group he changed the light color to red. Identify:
Independent variable:
Dependent variable:
Constants:
Control group (What would Mr. Smith use as a control group?):
Experimental group (what would Mr. Smith use as a experimental group?)

Answers

Higgffggvtgrjtbrb verve even

What is the measure of the amount of dissolved salts in ocean water?

Answers

Answer:

Salinity

HOPE THIS HELPS! :)

Explanation:

Most organic compounds are made of just four elements.

What are they?

Answers

Answer:

hydrogen, carbon, oxygen and nitrogen

Explanation:

Most organic compounds are made up of the four elements: hydrogen, carbon, oxygen and nitrogen.

Most organic compounds are made of just four elements are  hydrogen, carbon, oxygen and nitrogen.

What do you mean by an organic compound ?

The term organic compound is defined as a substance that contains covalently - bonded carbon and hydrogen and often with other elements.

Benzoic acid, aromatic compounds, benzoic aldehyde, propanoic acid, butanoic acid, malonic acid, amines, heterocyclic compounds, VOC, benzoic acid, and diethyl malonate are some examples of organic compounds.

Carbohydrates, lipids, proteins, and nucleotides are all organic compounds that are required for human function. Because they contain both carbon and hydrogen, these compounds are classified as organic.

Thus, Most organic compounds are made of just four elements are  hydrogen, carbon, oxygen and nitrogen.

To learn more about the organic compound, follow the link;

https://brainly.com/question/5994723

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All moving objects have kinetic energy. True False

Answers

Answer:

true

.......................

Answer: You're Welcome!

Oh, It's False - Kinetic energy depends upon the speed of the object; potential energy depends upon the position of the object.

As a heavy metal ball rolls down a hill, it goes faster and faster. Which statement is true?

Answers

The ball's potential energy is transferring into kinetic energy

Brainly if correct? Thanks!

Answer:

A

Explanation:

The balls potential energy is changing to kinetic energy

How do the percent compositions for C3H6 and C4H7 compare?
A. They are the same
B. C4H8 has a higher percentage of carbon than C3H6.
C. C4H8 has a higher percentage of hydrogen than C3H6.
D. none of the above

Answers

A. They are the same

Further explanation

Given

C3H6 and C4H8

Required

The percent compositions

Solution

C₃H₆(MW = 42 g/mol)

%C = 3.12/42 x 100% = 85.71%

%H = 6.1/42 x 1005 = 14.29%

C₄H₈(MW=56 g/mol)

%C = 4.12/56 x 100% = 85.71%

%H = 8.1/56 x 100%=14.29%

So they are the same, because mol ratio of C and H in both compounds is the same, 1: 2

The average atomic mass for germanium is 72.631 amu. If germanium occurred as a mixture of the two isotopes below, what would be the percent abundance of 73Ge in the mixture?

mass of 70Ge = 69.924 amu

mass of 73Ge = 72.923 amu

Percent abundance of 73Ge in nature = ________ %

Answers

Answer:

dora needs help

Explanation:

Answer:

...........................

a. Use the balanced equation C3H8 + 5O2 -> 3CO2 + 4H2O to answer the following questions
i. How many moles of CO2 are produced from 5 moles 02? (1 point)

ii. How many grams of CO2 are produced from 5 moles O2? (2 points)
iii how many grams of CO2 are produced from 128.00g O2? (2 points)

Answers

Answer:

i. 3 moles.

ii. 132.03 grams.

iii. 105.6 grams.

Explanation:

Hello!

In this case, given the balanced chemical reaction, we can proceed as follows:

i. By starting with 5 moles of oxygen, via the 5:3 mole ratio we compute the produced moles of CO2:

[tex]n_{CO_2}=5molO_2*\frac{3molCO_2}{5molO_2} =3molCO_2[/tex]

ii. Now, since we have previously computed the moles of CO2 from the same moles of oxygen, by using its molar mass (44.02 g/mol), we obtain:

[tex]m_{CO_2}=3molCO_2*\frac{44.01gCO_2}{1molCO_2} =132.03gCO_2[/tex]

iii. Now, we need to combine the previously used two proportional factors for the calculation of the mass of CO2 from 128.00 grams of oxygen (molar mass 32.00 g/mol):

[tex]m_{CO_2}=128.00gO_2*\frac{1molO_2}{32.00gCO_2}*\frac{3molCO_2}{5molO_2}*\frac{44.01gCO_2}{1molCO_2}\\\\m_{CO_2}=105.6gCO_2[/tex]

Best regards!

Propane is what type of matter?

Element
Compound
Homogeneous mixture
Heterogeneous mixture

Answers

Propane is a compound of Carbon and Hydrogen
CH4 is a compound because it is Made of carbon and H

Twelve grams of gas occupies 14.5 liters at a pressure of 52.0cm Hg. What is the volume when the pressure has increased to 85.0cm Hg?

Answers

Answer:

8.87 L.

Explanation:

From the question given above, the following data were obtained:

Mass (m) of gas = 12 g

Initial volume (V₁) = 14.5 L

Initial pressure (P₁) = 52 cmHg

Final pressure (P₂) = 85 cmHg

Final volume (V₂) =?

The final volume of the gas can be obtained by using the Boyle's Las equation as illustrated below:

P₁V₁ = P₂V₂

52 × 14.5 = 85 × V₂

754 = 85 × V₂

Divide both side by 85

V₂ = 754 / 85

V₂ = 8.87 L

Thus the volume of the gas will be 8.87 L

The table below shows properties of two compounds at standard pressure. Which statement classifies the two compounds? 1)Both compounds are ionic, 2)Both compounds are molecular, 3) Compound 1 is ionic, and compound 2 is molecular, 4)Compound 1 is molecular, and compound is ionic

Answers

Answer:

3) Compound 1 is ionic, and compound 2 is molecular

Explanation:

Compound-1 is an ionic compound while Compound-2 is a molecular compound. Option 3 is correct.

Ionic Compound:

They are formed when an atom donates its electron to another atom. This results in one positive and one negative ion.

Hence, it is a very strong bond. These compounds have a very high melting and boiling point. They are very good electric conductors in the aqueous solution.

For example- NaCl.

Molecular compounds:

They are compounds that are made up of discrete molecular units. For example- [tex]\bold {H_2O}[/tex]

They have very weak intermolecular bonds hence have low boiling and melting point and do not conduct electricity.

SInce Compound-1 has higher MP and BP and Compound-2 has low melting and boiling point.

Therefore, Compound-1 is an ionic compound while Compound-2 is a molecular compound.

To know more about Ionic Compound:

https://brainly.com/question/9167977

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