All categories

3 years ago

PLEASE HELP ME OUT!!

Chemistry

1 answer:

vesna_86 [32]3 years ago

7 0

Answer:

hydrogen

Explanation:

You might be interested in

What breaks and shatters easily?

Sergio [31]

Glass breaks and shatter easily.

4 0

4 years ago

Read 2 more answers

The daily dose for aspirin recommended by doctors is 81 mg/ day to reduce heart disease. a) In a week how many milligrams are ad

V125BC [204]

Answer:

a)567mg

b)0.567 grams

Explanation:

There are 7 days in a week, so we multiply the number of weeks by the number of daily dosage.

81mg*7=567mg

1 gram is 1000 mg

we divide 567 by 1000 to get the value in grams

7 0

3 years ago

Which of these is most likely observed during a thunderstorm?

Bas_tet [7]

The answer is waterspouts

3 0

4 years ago

Read 2 more answers

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

3 years ago

Analysis of a volatile liquid shows that it contains 48.64% carbon, 8.164% hydrogen, and 43.20% oxygen by mass. at 150.°c and 1.

Brut [27]

Hope this helps.....

7 0

3 years ago