CHEMISTRY MIDDLE SCHOOL

The larger the hole in the ozone layer gets,A. the less UV rays reach the Earth

B. the more heat escapes from the Earth

C. the more UV rays reach the Earth

D. the warmer the Earth will get

Answers

Answer 1
Answer:  The more UV rays reach the earth

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Given the following reaction: 2 OF2 + 2 S → SO2 + SF4 + 319.5 kJ Is this endothermic or exothermic? Draw the energy pathway:

Answers

Answer:

It is an exothermic reaction.

Explanation:

Why? Since the kJ is added to the product side, we know that this is an exothermic reaction since it is releasing heat. Endothermic reactions absorb heat and thus it would be represented on the products side.

To represent this exothermic reaction we would draw a curve starting mid graph then it goes up and then dropsdown. In other words, it looks downhill since it's releasing heat wheras an edothermic rxn, it is gaining heat, thus it looks like it is going upwards.

List 4 clues that a chemical reaction is occurring

Answers

Bubbles, color change, light and heat
bubbles, color change, temperature change, excess material rubbing off, and noise, like sizzling

In a redox reaction, the substance that accepts electrons is said to be

Answers

The substance doesn't have a specific name. We just say that that substance is being reduced. Remember this mnemonic - OILRIG where "Oxidation is Loss, Reduction is Gain" of electrons. 

What is the Name of RbC2H3O2

Answers

Answer:

Rubidium Acetate

Explanation:

Rb is Rubidium C2H3O2 is acetate

Answer:

Rubidium Acetate-

Hope this helps ^-^* Sorry if I'm wrong.

Explanation:

TruE or faults the size of. The population increases if the number of individuals. Attend to population is equal to the number of individuals leaving

Answers

True!
population increases if the number of individuals. the population is the nuber of individuals

What is a chemical property

Answers

any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.
Material's feature  that becomes visible in a chemical reaction.
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