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3 years ago

14

What do the arrows in the diagram tell you about the molecule?

1 answer:

maw [93]3 years ago

8 0

Answer:

A

Explanation:

<h2>#keep learning </h2><h3>hope makatulong</h3>

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Which pair of elements will form a covalent bond?

Vikki [24]

A. Hydrogen and Chlorine

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3 years ago

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12g of Pottasium sulphate dissolves in 75g of water at 60°C. What is the solubility at that temperature?

pentagon [3]

To find solubility, we need calculate how much potassium sulfate will be dissolved at 100 g of water.

12 g potassium sulfate ------ 75 g water
x g potassium sulfate --------100 g water

x=12*100/75 = 16g
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4 years ago

Using the periodic table and your knowledge of atomic structure. Compare the number of electrons in a carbon-12 and carbon-14

Brut [27]

Both carbon 12 and carbon 14 have the same no. of Electrons but the difference is carbon 14 has more neutrons

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3 years ago

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In Europe gasoline is often sold in liters. If a typical fill-up requires 11 gal of gas, how many liters are necessary?

egoroff_w [7]

Answer:

41,64 liters

Explanation:

In order to change the units we need to know the equivalence of said units.

1 gal of gas equals to 3,78541 liters.

We can use cross-multiplication in order to convert it into liters:

$\frac{1 gal}{3.78541 L} = \frac{11 gal}{X} \\\\X= \frac{3.78541 L x 11 gal}{1 gal}$

A typical fill-up requires 41,64 liters.

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4 years ago

List two observations that could be evidence of a chemical reaction.

solmaris [256]

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Emission of heat or light, or a color change.

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