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3 years ago

How is chemistry apart of daily routine

1 answer:

3 0

Chemical reactions takes place in plants and animals, this result in the formation of substances in some plants and animals that can be used to treat illness. Chemistryis important to everyday life, because it provides medicine. The food we consume each day comes directly from chemical processes.

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How does vibrational energy contribute to a reaction?

Viefleur [7K]

Answer:

A lot of thing tbh

Explanation:

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4 years ago

What is the charge for the polyatomic ions listed? ammonium and acetate

Svetlanka [38]

Answer:

-1

Explanation:

Many of the common polyatomicions have an electrical charge of.

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3 years ago

Read 2 more answers

Which is the correct Lewis structure for acetylene (C2H2)?

Fed [463]

H-C≡C-H this is the lewis structure of acetylene
please mark as brainliest

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3 years ago

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A sunscreen preparation contains 2.60 % by mass benzyl salicylate. If a tube contains 6.0 oz of sunscreen, how many kilograms of

Marrrta [24]

Answer : The mass of benzyl salicylate needed to manufacture 350 tubes of sunscreen are, 1.55 kg

Explanation :

As we are given that a sunscreen preparation contains 2.60 % by mass benzyl salicylate. That means, 2.60 grams of benzyl salicylate present in 100 g of solution.

First we have to convert the given mass from oz into kg.

Conversion used:

1 kg = 35.274 oz

or,

$1oz=\frac{1}{35.274}kg$

So,

$6oz=\frac{6oz}{1oz}\times \frac{1}{35.274}kg=0.1701kg$

Now we have to determine the mass of benzyl salicylate.

As, 100 g of solution contains mass of benzyl salicylate = 2.60 g

So, 0.1701 kg of solution contains mass of benzyl salicylate = $\frac{2.60g}{100g}\times 0.1701kg=0.00442kg$

Now we have to determine the mass of benzyl salicylate are needed to manufacture 350 tubes of sunscreen.

Mass of benzyl salicylate in 350 tubes of sunscreen = 0.00442 kg × 350

Mass of benzyl salicylate in 350 tubes of sunscreen = 1.55 kg

Thus, the mass of benzyl salicylate needed to manufacture 350 tubes of sunscreen are, 1.55 kg

6 0

4 years ago

How many lone pairs are in SO4 2-

s344n2d4d5 [400]

Answer:

None

Explanation:

There are two S=O. bonds and two S-O bonds in sulfate ion lewis structure. Sulfur atom is the center atom and four oxygen atoms are located around sulfur atom. There are no lone pairs in the last shell of sulfur atom.

7 0

3 years ago