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o-na [289]
3 years ago
13

What is the answer for #6? And can u explain to me how u got it right?

Chemistry
1 answer:
Setler [38]3 years ago
5 0
The answer is D, pH greater than 7. This is because when you make a solution of potassium hydroxide, it leads to an excess of hydroxide ions in the water. Since the concentration of hydroxide ions is greater than that of protons, it causes the water to be basic. The basic range on the pH scale is always greater than 7. 
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An ionic compound is composed of the following elements:
Amiraneli [1.4K]

Answer: N3 H12 P O3

Explanation:

From the question :

N = 31.57% H = 9.10% P = 23.27%

O= 36.06%

Divide each of the element by their respective relative atomic masses.

N = 31.57 / 14 = 2.26

H = 9.10/ 1 = 9.10

P = 23.27 / 31= 0.750

O =36.06 / 16 = 2.25

Divide each answer by the lowest of them all, we then have:

N = 2.26/ 0.750 = Approx = 3

H = 9.10 / 0.750 = Approx = 12

P = 0.750/ 0.750= 1

O = 2.25 / 0.750 = Approx = 3

The empiral formula is

N3 H12 P O3

6 0
3 years ago
Read 2 more answers
What is the oxidation number of a pure element?
Snowcat [4.5K]
The oxidation number of a pure element is zero.
3 0
3 years ago
2.50 L of gas originally at 50 K is warmed to 80 K. If the pressure remains constant, which gas law needs to be used to find the
Brilliant_brown [7]

Answer:

A

Explanation:

You want an equation that includes both V and T. Charles' Law states that V =kT or V₁/T₁ = V₂/T₂, so this is the best formula to use.

B: The Combined Gas Law is p₁V₁/T₂ = p₂V₂/T₂ will work, but it's overkill for the situation. You can assume any constant value for the pressure, and it will cancel from each side of the equation,

C is wrong. Boyle's Law is p₁V₁ = p₂V₂. It does not include the temperature.

D is wrong. Gay-Lussac's Law is p₁/T₂ = p₂/T₂. It does not include the volume.

7 0
3 years ago
An ionic bond can be formed between
mash [69]
Ionic bonds are strong electrostatic forces of attraction formed between oppositely charged ions (between metal and non-metals)
6 0
4 years ago
Read 2 more answers
Number 4 Please Help!!!!
Dominik [7]

Answer: c i think

Explanation:

5 0
3 years ago
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