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2 years ago

I need help fast!!! Fill in the coefficients

Chemistry

1 answer:

Arturiano [62]2 years ago

6 0

Answer:

2HCl - H2 + Cl2

Explanation:

The two hydrochloric acid molecules decompose into one hydrogen molecule (H2) and one chlorine molecule (Cl2). If there is only one type of a specific molecule present, you should not have to add a coefficient of 1 behind it.

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Most geologists think that the movement of Earth's plates is caused by

butalik [34]

Answer: C. Convection currents in the asthenosphere.

Explanation: Most geologists think that the movement of Earth's plates is caused by convection currents in the asthenosphere.

***If you found my answer helpful, please give me the brainliest, please give a nice rating, and the thanks ( heart icon :) ***

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2 years ago

Tungsten fits best into which category?

nordsb [41]

Answer:

B. Element

Explanation:

Tungsten is an chemical element

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What is the size of Neptune and the state of matter?

MakcuM [25]

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2 years ago

Plants that have nigrogen fixing bacteria in their roots are called

iragen [17]

Plants that have nigrogen fixing bacteria in their roots are called

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2 years ago

A student dropped a piece of nickel metal into a solution of HCl(aq). He observed the formation of gas bubbles and collected the

omeli [17]

Answer:

a. The student performed the splint test incorrectly. He should of observed a popping sound when the splint was placed in the test tube.

Explanation:

It is given that a student performed an experiment where he dropped a nickel metal in to HCl solution. He observed the reaction and performed a splint test in the test tube that is filled with a gas which is formed while Nickle is dropped into the solution of HCl.

But the experiment that the student performed was incorrect. He must have observed the popping sound when the splint was placed in the test tube.

When the splint was added to the gas splint flared up. The hydrogen gas pops out when exposed to the flame.

$Ni + HCl(aq) = NiCl + H_2$

Thus the correct option is (a).

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2 years ago