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
Yuki888 [10]
3 years ago
11

According to the law of conservation of mass, how much zinc was present in the zinc carbonate?

Chemistry
1 answer:
oksano4ka [1.4K]3 years ago
6 0

Answer : The correct option is, 104 grams.

Explanation :

Law of conservation of mass : It states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

This also means that total mass on the reactant side must be equal to the total mass on the product side.

The balanced chemical reaction will be,

Ca+ZnCO_3\rightarrow CaCO_3+Zn

According to the law of conservation of mass,

Total mass of reactant side = Total mass of product side

Total mass of Ca+ZnCO_3 = Total mass of CaCO_3+Zn

Mass of Ca + Mass of ZnCO_3 = Mass of CaCO_3 + Mass of Zn

As we are given :

Mass of Ca = 64 g

Mass of ZnCO_3 = 192 g

Mass of CaCO_3 = 152 g

So,

Mass of Ca + Mass of ZnCO_3 = Mass of CaCO_3 + Mass of Zn

64 g + 192 g = 152 g + Mass of Zn

Mass of Zn  = (64 + 192) - 152

Mass of Zn  = 104 g

Therefore, the mass of zinc present in the zinc carbonate was 104 grams.

You might be interested in
A sample of water at 20 degrees c contains what bonds
vladimir2022 [97]
Covalent and hydrogen bonds

3 0
3 years ago
C) A football feels hard on a hot day but feels softer in the evening​
Mariana [72]

Answer: ^_^

Explanation:

its because during day time the ball becomes heated up and the air inside it try to come out as the heat air always try to go up swelling up the ball,

so in the evening when the air cools down the ball too cools down and air inside it also cools down making the ball feel soft,

Therefore, a football feels hard on a hot day but feels softer in the evening​

Hope it helped u,

pls mark as the brainliest

^_^

5 0
3 years ago
Read 2 more answers
Which of the following groups of chemical elements would you expect to be most alike in their physical and chemical properties?
juin [17]
Many elements show very strong similarities to each other.<span>For example, lithium (Li), sodium (Na), and potassium (K) are all soft, very reactive metals. 

</span>
8 0
2 years ago
If a lab requires each lab group to have 25ml of a solution and it takes 15 grams of CuNO3 to make 1 liter of solution how many
tino4ka555 [31]

We need to do some general algebra here.

We will find that you need 8.25 grams of CuNO₃ to make enough solution for the 22 labs.

<em>We know that:</em>

  • Each lab group needs 25 ml of solution.
  • it takes 15 g of CuNO₃ to make one L of that solution.
  • There are 22 labs.

Because each lab needs 25 ml of solution, 22 labs will need that amount 22 times, so the <u>total amount of solution needed</u> is:

22*25ml = 550 ml

Now we know that we need 15 grams to make one liter of solution, and:

1 L = 1000ml

Then you need 15g to make 1000ml

and x (we want to find this amount) to make 550ml

Then we can write two equations (not actual equations, as these are different units) like:

x = 550ml

15g = 1000ml

Now we can take the quotient between these two equations:

x/15 g = (550ml/1000ml)

And now we can solve this for x:

x = (550ml/1000ml)*15g = 8.25g

So you need 8.25 grams of CuNO₃ to make enough solution for the 22 labs.

If you want to learn more, you can read:

brainly.com/question/8743486

5 0
2 years ago
Which would easily give up more electrons during bonding?
Oliga [24]
Lie I think I believe
5 0
2 years ago
Other questions:
  • For the following aqueous reaction, complete and balance the molecular equation and write a net ionic equation, making sure to i
    12·1 answer
  • The density of a gas is measured at 1.653 g/L at 746 mmHg and 25.0 °C. What is its molar mass?
    7·2 answers
  • Calculate the volume of carbon dioxide and water vapour produced and the volume of oxygen remaining, when 20.0 dm3 of propane re
    15·1 answer
  • 12. The most common factors that cause chemical reactions to occur are all the following except
    10·1 answer
  • What three human body systems coordinate cause an arm to move
    10·1 answer
  • How does a scientist know where on the periodic table to put a newly discovered element?
    8·1 answer
  • Need help!!!
    14·1 answer
  • Which of the following examples is a molecule with a covalent bond? (Use the electronegativity values from the periodic table li
    5·2 answers
  • What is the melting point for neon
    14·1 answer
  • How can energy transfer affect the physical and chemical properties of matter?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!