4 years ago

Why are chemical equations balanced?

Chemistry

1 answer:

Inessa05 [86]4 years ago

3 0

Answer:

Chemical equations need to be balanced so that they follow the law of conservation of mass.

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I need help fast thx

Free_Kalibri [48]

I'm guessing you have to balance these.
I took a picture of my working out.

Answer to the first one = 2HCl+CaCO3=CaCl2+H20+CO2
So basically just add a big 2 in front of the first HCl

Answer to second one = 2Ni + O2 = 2NiO
So basically in this one just add a big 2 in front of both of the Ni

6 0

3 years ago

What is the mass of 4.5 moles of Cu(NO3)2?

Tatiana [17]

Answer:

The mass of 4.5 moles of Cu(NO3)2 is 843.55g

Explanation:

Mass = moles x Molar mass

Mass = 4.50(187.55)

= 843.97g

6 0

3 years ago

Which substance is a combination of different atoms?

koban [17]

It is also a compound because the atoms that make water are not all the same - some are oxygen and some are hydrogen. Oxygen in the atmosphere is a molecule because it is made from two atoms of oxygen. It is not a compound because it is made from atoms of only one element - oxygen.

4 0

4 years ago

Read 2 more answers

Please,someone help me with the name of this chain

MArishka [77]

Answer:

I am sorry but i do not know the answer i am sorry

Explanation:

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3 years ago

A ball cart is moving at a rate of 2ms the cart suddenly stops and the ball continues to travel in the same direction at the sam

s2008m [1.1K]

It would be an example of Inertia.

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3 years ago

Why are chemical equations balanced?​

Why are chemical equations balanced?