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Brilliant_brown [7]
3 years ago
12

Which chemical equation is balanced.​

Chemistry
1 answer:
Tresset [83]3 years ago
7 0

Answer:

Explanation:

D Option is balanced

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Polar air masses bring warm temperature and have lower air temperature? T or F
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Answer:

t? im pretty sure have a good day

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3 years ago
Calculate the ph of a 0.005 m solution of potassium oxide k2o
Alecsey [184]
First, we have to see how K2O behaves when it is dissolved in water:

K2O + H20 = 2 KOH

According to reaction K2O has base properties, so it forms a hydroxide in water.
For the reaction next relation follows:

c(KOH) : c(K2O) = 1 : 2

So,

c(KOH)= 2 x c(K2O)= 2 x 0.005 = 0.01 M = c(OH⁻)

Now we can calculate pH:

pOH= -log c(OH⁻) = -log 0.01 = 2

pH= 14-2 = 12




3 0
3 years ago
Karla added green pellets to a container of water before she began watering her lawn. What correctly describes
kvv77 [185]

The correct answer is C. The water is the solvent because the green pellets dissolved in it.

Explanation:

In solutions, the are two substances involved, the solvent and the solute. The solvent is usually a liquid substance; additionally, the solvent dissolves another substance, which is known as the solute. For example, if you dissolve a spoon of salt in a glass of water, the solute is the salt which is the substance dissolved and the solvent is the water because the solute is dissolved in it. According to this, in the case presented the water is the solvent because the green pellets which are the solute dissolve in it.

5 0
3 years ago
Fill in the blank: You can find the number of __________ in any atom by subtracting the atomic number from the mass number.
Shtirlitz [24]
B is true if we subtract atomic number(the number of protons )from the mass number
we can find neutrons.
hope this helps
5 0
3 years ago
What is the volume, in liters, of 0.500 mol of c3h8 gas at stp? (hint..use avogadro’s principle to solve this)?
wolverine [178]
When we are at STP conditions, we can use this conversion: 1 mol= 22.4 L

0.500 mol C₃H₈ (22.4 L/ 1 mol)= 11.2 L
3 0
3 years ago
Read 2 more answers
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