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cricket20 [7]
3 years ago
7

Is liquid ammonia a household acid?​

Chemistry
2 answers:
alexgriva [62]3 years ago
8 0

Yes it is an cleaning product

marysya [2.9K]3 years ago
4 0

Answer:

yes

Explanation:

it cleans in the house

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Determine the pH of a 0.05 M solution of hydrocyanic acid (HCN). Hydrocyanic acid has an acid-dissociation constant of 4.9 × 10-
KATRIN_1 [288]
The answer is 5.3. Just did it in e2020
7 0
3 years ago
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A student measures the mass of an 8 cm block of brown sugar to be 12.9 g. What is the density of
horrorfan [7]

Answer:

0.0025g/cm³

Explanation:

Given parameters:

Mass of the brown sugar = 12.9g

dimension of the sugar = 8cm

unknown:

density of the sugar = ?

Solution

Density is defined as the mass per unit volume of a substance. The expression is given below:

      Density = \frac{mass}{volume}

We know the mass of the substance but the volume is unknown:

Volume of the brown sugar = l x bx h = 8x8x8 = 512cm³

Density of the brown sugar = \frac{12.9}{512} = 0.0025g/cm³

8 0
3 years ago
(4.03 Q1) What is a substance which cannot be broken down into different
sergejj [24]

Answer:

An element

Elements are substances that cannot be broken down into simpler substances either by physical or chemical method.

4 0
3 years ago
Can you please help me with this stoichiometry problem?​
VMariaS [17]
Ah, stoichiometry. Have you ever done ratios before?

When you are given chemical reactions, all of the moles of reactant and product are proportional. This means that they're in ratio. Say we double the number of moles of water to 12 moles. How many moles do you think C2H6 will have? It'd be 4 moles, since just like water it was doubled since they're in proportion.

You can also think about that example above like a literal ratio. Since the original ratio is 2:6, it then turns into n:12, with n being the unknown number of moles of C2H6. Since ratios we know that ratios are always equal can be converted to fraction:

2/6 = n/12
Cross multiply:
24 = 6n
n = 4 moles

Makes sense? On to the actual question.

We're looking at the proportion between oxygen and carbon dioxide. Let's write that into a ratio:

7:4

Since there are seven moles of oxygen and four moles of carbon dioxide.

The number of moles of carbon dioxide is reduced to 1 mole. You could simply divide seven by 4 to find your answer (Since 4 was divided by 4 to make 1), but let's use the ratio method just in case questions in the future aren't this convenient:

7:4 becomes n:1

Convert to fraction:
7/4 = n/1

Cross multiply;
7 = 4n

Divide:
n = 7/4

Convert to decimal:
n = 1.75

The answer is Option C, 1.75 moles.

Let me know if you want me to explain anything I did here.
Good luck!
-T.B.
7 0
4 years ago
Work is a transfer of<br>energy <br>Force <br>Mass <br>motion ​
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