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Katarina [22]
3 years ago
15

A reaction which needs to gives off energy to complete the chemical reactions is called an

Chemistry
1 answer:
sukhopar [10]3 years ago
8 0

Answer:

Exothermic reaction

Explanation:

Cause im a kid genius and i just got the question right on usa test prep

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What keeps wind from blowing in a straight line from the south pole to the equator?
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Wind blows in a straight line from the South Pole to the equator because there is no Coriolis effect in the equator. In this case, there is very little to no deflection. Coriolis effect is when the Earth’s rotation makes the winds curve.

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4 years ago
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The independent variable has control and affects the
Stella [2.4K]

Answer:

The independent variable is the condition that you change in an experiment. It is the variable you control.

Explanation:

It is called independent because its value does not depend on and is not affected by the state of any other variable in the experiment. Sometimes you may hear this variable called the "controlled variable" because it is the one that is changed.

3 0
3 years ago
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Gaseous ethane ch3ch3 will react with gaseous oxygen o2 to produce gaseous carbon dioxide co2 and gaseous water h2o . suppose 21
Anna11 [10]

The chemical reaction for this is:

 

2 C2H6 + 7 O2 => 4 CO2 + 6 H2O

 

Solving for CO2 with each reactant will give:

 

21.0 g C2H6 x (1 mol C2H6/30.08 g C2H6) x (6 mol H2O/2 mol C2H6) x (18 g H2O/1 mol H2O) = 37.70 g H2O

 

110 g O2 x (1 mol O2/32.00 g O2) x (6 mol CO2/7 mol O2) x (18 g H2O/1 mol H2O) = 53.04 g H2O

 

Since the amount of H2O in C2H6 is lower therefore C2H6 is the limiting reactant and the maximum amount of water is only 38 g H2O (2 significant digits)


ANswer:

38 g water

6 0
4 years ago
What is the chemical formula for iodine?
Karo-lina-s [1.5K]
Iodine is I2 (subscript)
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5 0
3 years ago
Hydrogen peroxide rapidly decomposes to water and oxygen. If the water is appearing at a rate of 2.0 M/s, what is the rate of th
balu736 [363]

Answer:

Rate of reaction = 2.0 M/s

Explanation:

2H2O2(g) --> 2H2O(g) + O2(g)

Rate of formation of H2O = 2.0 M/s

Rate of reaction can be measured using multiple techiques and parameters like volume, pressure etc.

Among these techniques is the measurement of appearance of products.

This means we have;

Rate of reaction = Rate of appearance of product

Hence;

Rate of reaction = 2.0 M/s

4 0
4 years ago
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