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2 years ago

What substance would be soluble in water?

Chemistry

1 answer:

4vir4ik [10]2 years ago

7 0

Answer:

Explanation:

Since water is polar, we need for there to be a polar solute. This eliminates options B and D.

Now to choose between A and C, we can look at the compounds mentioned.

For A, NH3 is mentioned, which is a polar substance.

However, for C, H2 is mentioned, which is a nonpolar molecule, contrary to what is stated by the option.

Therefore, A is the answer.

You might be interested in

What is the empirical formula of a compound composed of 30.5 g potassium (k) and 6.24 g oxygen (o)?

VLD [36.1K]

K5O2

convert grams to moles, divide both by the smallest mole mass, multiply that until hole.

30.5 g K ÷ 39.10 = .78 mol
6.24 g O ÷ 16 = .39 mol
.78 mol ÷ .39 mol = 2.5
.39 mol ÷ .39 mol = 1
2.5 x 2 = 5
1 x 2 = 2
K5O2

5 0

3 years ago

A container of argon with a volume of 22 ml has a pressure of 101.0 kPa.

Alexeev081 [22]

Answer:

The new pressure is 44.4 kPa.

Explanation:

We have,

Initial volume, $V_1=22\ ml$

Initial pressure, $P_1= 101.0\ kPa$

It is required to find the new pressure when the volume is increased to 50 ml. The relationship between pressure and volume is known as Boyle's law.

$PV=k\\\\P_1V_1=P_2V_2$

$P_2$ is final pressure

$P_2=\dfrac{P_1V_1}{V_2}\\\\P_2=\dfrac{22\times 101\times 10^3}{50}\\\\P_2=44440\ Pa\\\\P_2=44.4\ kPa$

So, new pressure is 44.4 kPa.

6 0

2 years ago

50 POINTS*** Which of the following is not a correct chemical equation for a double displacement reaction?

hammer [34]

I mostly believe in between D and B beacuse K3po4 and caco3 is not an element equation

4 0

3 years ago

Read 2 more answers

In class, an instructor pours liquid nitrogen on an inflated balloon and the balloon collapsed on itself. Why does the ballon de

irina [24]

The liquid nitrogen freezes the balloon and shatters it on contact

6 0

3 years ago

____H3PO4 + ____ KOH --> ______K3PO4 + ____H2O can someone please balance that chemical equation?

Murrr4er [49]

Answer:

H3PO4 + 3KOH ----> K3PO4 + 3H2O

Explanation:

The valency of K element is + 1 while that of PO4 compound is -3

Hence, at least 3 K atoms are needed to combine with PO4 to form K3PO4 compound.

Hence, the revised equation will be

H3PO4 + 3KOH ----> K3PO4 + 3H2O

Now, the number of atoms and charges of each element is a given equation are equal on both the left and right hand side.

6 0

2 years ago