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2 years ago

13

In order for a chemical reaction to take place, a certain amount of _____________ must be present. A. heat B. friction C. chemic

als D. energy
I NEED THE ANSWER LIKE..RIGHT NOW!!!!!!!!

2 answers:

ch4aika [34]2 years ago

6 0

I believe it'd be energy.

Anna35 [415]2 years ago

3 0

The right answer is energy

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What is the element present for copper

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Copper is an brown-orange color which it's atomic number is 29. With high thermal and electricity conductivity with it's smooth surface.

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2 years ago

Suppose 50.0g of silver nitrate is reacted with 50g of hydrochloric acid producing silver chloride and a mixture of other produc

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Answer:

53.6 grams of silver chloride was produced.

Explanation:

$AgNO_3+HCl+\rightarrow AgCl+HNO_3$

Law of conservation of mass 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.

Mass of silver nitrate = 50.0 g

Mass of hydrogen chloride = 50.0 g

Mass of silver chloride = x

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Mass of silver nitrate + Mass of hydrogen chloride =

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[te]50.0 g+50.0 g=x+46.4 g[/tex]

$x=50.0 g+50.0 g - 46.4 g = 53.6 g$

53.6 grams of silver chloride was produced.

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3 years ago

Why does green light slow down more than orange light does when passing through an object?

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3 years ago

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Which two systems in the human body work together to eliminate carbon dioxide from the body?

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2 years ago

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For the hypothetical reaction: A + B ---> 2C, write an expression that relates the disappearance of A and B to the appearance

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Answer:

Rate expression has been given below

Explanation:

According to the given equation, 1 molecule of A reacts with 1 molecule of B and produces 2 molecules of B at a time.

So, rate of disappearance of both A and B are one half of rate of appearance of B

Hence rate expression can be represented as:

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where $\frac{-\Delta [A]}{\Delta t}$ is rate of disappearance of A, $\frac{-\Delta [B]}{\Delta t}$ is rate of disappearance of B and $\frac{\Delta [C]}{\Delta t}$ rate of appearance of C

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3 years ago