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3 years ago

I must type a short response. Can anyone help me out?

Chemistry

1 answer:

notka56 [123]3 years ago

6 0

Explanation:

The fluids seperated because of the different density of the liquids. The lower liquid has a high density while the liquid on top has a low density

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1.What are 4 things that are increasing Earth's temperatures? 2. What are 4 things we can do to on a personal level to help?

VARVARA [1.3K]

Answer:

Hey there!

Four things increasing temperature:

Cars, Busses, Motorcycles

Greenhouse Gases

Factories

Non-renewable energy sources

Four things we can do:

Ride a bike instead of a car

Try using solar panels, and wind energy

Turn off lights when leaving a room

Try reusing and recycling.

Let me know if this helps :)

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3 years ago

What is the empirical formula of a compound that contains 49.4% K, 20.3% S, and 30.3% by mass? A) KSO3 B) K2SO3 C) KSO2 D) KSO E

yulyashka [42]

Answer: $K_2SO_3$ .

Explanation:

If percentage are given then we are taking total mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mass of K = 49.4 g

Mass of S = 20.3 g

Mass of O = 30.3 g

Step 1 : convert given masses into moles.

Moles of K= $\frac{\text{ given mass of K}}{\text{ molar mass of K}}= \frac{49.4g}{40g/mole}=1.23moles$

Moles of S= \frac{\text{ given mass of S}}{\text{ molar mass of S}}= \frac{20.3g}{32g/mole}=0.63moles[/tex]

Moles of O = \frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{30.3g}{16g/mole}=1.89moles[/tex]

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For K = $\frac{1.23}{0.63}=2$

For S = $\frac{0.63}{0.63}=1$

For O = $\frac{1.89}{0.63}=3$

The ratio of K: S:O = 2: 1: 3

Hence the empirical formula is $K_2SO_3$ .

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4 years ago

Calculate # of atoms in 46g of Na

makvit [3.9K]

21Explanation:BEACUSE I CAN

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3 years ago

How does water vapor get into the atmosphere?

Brums [2.3K]

Answer:

through the water cycle

Explanation:

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4 years ago

Why are lead compounds harmful to us?

Dominik [7]

Explanation:

Lead can cause effects on the blood, as well as the nervous, immune, renal and cardiovascular systems. ... Exposure to high amounts of lead can cause gastrointestinal symptoms, severely damage the brain and kidneys, and may cause reproductive effects. Large doses of some lead compounds have caused cancer in lab animals.

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3 years ago