2 years ago

Question 4 (4 points)

Chemistry

1 answer:

Fiesta28 [93]2 years ago

7 0

I don’t know what is your problem

You might be interested in

Helooo i need help please :)

Tatiana [17]

It is a ,d and c just make sure tho

6 0

2 years ago

When light strikes a transparent material, most of the light is absorbed or reflected.

Monica [59]

When light strikes a transparent material, most of the light passes through it it doesn't absorb or reflect it

4 0

2 years ago

Read 2 more answers

A .......... notifies you that danger is present if the directions are not followed.

maksim [4K]

Answer:

A. Warning

Explanation:

Out of all said choices, the best choice would be warning since it would fit the sentence the most.

"A Warning notifies you that danger is present." compared to:

"A Hazard notifies you that danger is present."

"A Safety notifies you that danger is present."

"A Danger notifies you that danger is present."

5 0

2 years ago

Calculate the molality of acetone in an aqueous solution with a mole fraction for acetone of 0.241. Answer in units of m.

Anit [1.1K]

Answer: The molality of solution is 17.6 mole/kg

Explanation:

Molality of a solution is defined as the number of moles of solute dissolved per kg of the solvent.

$Molarity=\frac{n}{W_s}$

where,

n = moles of solute

$W_s$ = weight of solvent in kg

moles of acetone (solute) = 0.241

moles of water (solvent )= (1-0.241) = 0.759

mass of water (solvent )= $moles\times {\text {Molar Mass}}=0.759\times 18=13.7g=0.0137kg$

Now put all the given values in the formula of molality, we get

$Molality=\frac{0.241}{0.0137kg}=17.6mole/kg$

Therefore, the molality of solution is 17.6 mole/kg

3 0

2 years ago

Adding copper or magnesium to aluminum creates an alloy that is _____. more flammable than magnesium heavier than steel stronger

Maksim231197 [3]

stronger than aluminum

5 0

2 years ago

Read 2 more answers