1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
swat32
3 years ago
12

Please Help! 40 Points! PLEASE DON'T PUT INCORRECT ANSWERS TO USE MY POINTS!

Chemistry
2 answers:
mr_godi [17]3 years ago
6 0
Kinetic energy has a direct relationship with mass, meaning that as mass increases so does the Kinetic Energy of an object.

Answer: A
Aleksandr-060686 [28]3 years ago
4 0

Answer:

The equation for Kinetic Energy is: KE = 1/2 mv2. Kinetic energy has a direct relationship with mass, meaning that as mass increases so does the Kinetic Energy of an object. The same is true of velocity.Explanation:

You might be interested in
Water glass is found in
klemol [59]

Answer:

liquid form

Explanation:

am i right? if right like

5 0
3 years ago
Read 2 more answers
How many moles are found in 133 g of Mg3 N2
konstantin123 [22]
Magnesium nitride weighs 100.95 g/mol

133/100.95 = 1.32 mols
7 0
3 years ago
Read 2 more answers
Help me please I’ll give you brainest
Alika [10]

Answer:

I also want its answer

Please fast

4 0
2 years ago
Read 2 more answers
How many liters of hydrogen gas will be produced at STP from the reaction of 7.179×10^23 atoms of magnesium with 54.219g of phos
Alexeev081 [22]

Answer: The volume of hydrogen gas produced will be, 12.4 L

Explanation : Given,

Mass of H_3PO_4 = 54.219 g

Number of atoms of Mg = 7.179\times 10^{23}

Molar mass of H_3PO_4 = 98 g/mol

First we have to calculate the moles of H_3PO_4 and Mg.

\text{Moles of }H_3PO_4=\frac{\text{Given mass }H_3PO_4}{\text{Molar mass }H_3PO_4}

\text{Moles of }H_3PO_4=\frac{54.219g}{98g/mol}=0.553mol

and,

\text{Moles of }Mg=\frac{7.179\times 10^{23}}{6.022\times 10^{23}}=1.19mol

Now we have to calculate the limiting and excess reagent.

The balanced chemical equation is:

3Mg+2H_3PO_4\rightarrow Mg(PO_4)_2+3H_2

From the balanced reaction we conclude that

As, 3 mole of Mg react with 2 mole of H_3PO_4

So, 0.553 moles of Mg react with \frac{2}{3}\times 0.553=0.369 moles of H_3PO_4

From this we conclude that, H_3PO_4 is an excess reagent because the given moles are greater than the required moles and Mg is a limiting reagent and it limits the formation of product.

Now we have to calculate the moles of H_2

From the reaction, we conclude that

As, 3 mole of Mg react to give 3 mole of H_2

So, 0.553 mole of Mg react to give 0.553 mole of H_2

Now we have to calculate the volume of H_2  gas at STP.

As we know that, 1 mole of substance occupies 22.4 L volume of gas.

As, 1 mole of hydrogen gas occupies 22.4 L volume of hydrogen gas

So, 0.553 mole of hydrogen gas occupies 0.553\times 22.4=12.4L volume of hydrogen gas

Therefore, the volume of hydrogen gas produced will be, 12.4 L

4 0
3 years ago
Hi ! Could someone help me out with this last part to my chemistry practice ? Thank you !
skelet666 [1.2K]

After 100years, sample is 250g

After 200 years, sample is 125g

After 300years, sample is 62.5 g

7 0
3 years ago
Other questions:
  • Honors Stoichiometry Activity Worksheet
    14·1 answer
  • A model of the solar system with the Sun at the center is said to be heliocentric.
    10·2 answers
  • What type of isomerism is shown by alkanes
    5·1 answer
  • Define velocity and state what it is meant by uniform acceleration
    13·1 answer
  • What is the molar concentration of [H3O+] in a cola that has a pH of 3.120?
    5·1 answer
  • People mine zinc metal for use as an anticorrosive, skin protectant, and in electrical components. Zinc mining involves using ch
    15·2 answers
  • How do rivers affect watersheds?
    15·2 answers
  • Can someone help me please
    12·1 answer
  • What is the degree of lightness or darkness of a material is called its
    8·1 answer
  • (WHOEVER DOES THIS GETS BRAINLEST!!) describe the structure of the earth in your own words. (pls add some detail and pls dont ma
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!