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3 years ago

Which of the following is made of matter?

Chemistry

2 answers:

Maurinko [17]3 years ago

8 0

The sun because it is made up of helium and hydrogen

sergeinik [125]3 years ago

7 0

Answer:A

Explanation:

Matter is the substance of which all material is made. That means objects which have mass. Energy is used in science to describe how much potential a physical system has to change. In physics, energy is a property of matter.

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g When copper(II) chloride and sodium carbonate solutions are combined, solid copper(II) carbonate precipitates, leaving a solut

Elden [556K]

Answer:

When copper(II) chloride and sodium carbonate solutions are combined, solid copper(II) carbonate precipitates, leaving a solution of sodium chloride. Write the conventional equation, total ionic equation, and net ionic equation for this reaction.

Explanation:

The word equation for the reaction is:

Copper (II) chloride(aq) + sodium carbonate (aq) ->sodium chloride (aq) + copper carbonate(s)

The balanced chemical equation of the reaction is:

$CuCl_2(aq)+Na_2CO_3(aq)->2NaCl(aq)+CuCO_3(s)$

The complete ionic equation is:

$Cu^2+(aq)+2Cl^-(aq)+2Na^+(aq)+CO_3^2^-(aq)->2Cl^-(aq)+2Na^+(aq)+CuCO_3(s)\\$

The net ionic equation is obtained from the complete ionic equation after removing the spectator ions:

$Cu^2^+(aq)+CO_3^2^-(aq)->CuCO_3(s)$

5 0

2 years ago

What is true of a substance with a lot of mass?

fomenos

Answer:

A. it contains a lot of matter

5 0

2 years ago

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Which of the following is fansition metallon Akt 02 라 Sfeet

kow [346]

Answer: 02 라

Explanation:

5 0

2 years ago

I appreciate the help

hram777 [196]

Answer:

yes the answer is true because heat changes duriing epalthy change

7 0

2 years ago

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A 225 g sample of french fries supplies 460 kilocalories of energy. 65% of those calories come from fat, which supplies 9 kiloca

brilliants [131]

The french fries gives 460 kilocalories and 65% of those calories come from fat. Then, calorie that comes from fat would be: 65% * 460 kcal= 299 kcal

Fat gives energy about 9kcal/gram. Then, the total mass of fat in the french fries would be: 299 kcal/ (9kcal/g)= 33.22 grams

3 0

3 years ago

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