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Mila [183]
3 years ago
13

What is urine made of?

Chemistry
1 answer:
Annette [7]3 years ago
6 0

Answer: 90 percent water,  electrolytes such as potassium and phosphorus, and chemicals called urea and uric acid

Explanation:

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How much energy is required to raise 10 grams of water by 10 degrees Celsius? (in Joules)
Georgia [21]

Answer:

420j

Explanation:

Heat capacity =10*4.2*10

=420j

4 0
3 years ago
Read 2 more answers
What volume of a 0.155 M potassium hydroxide solution is required to neutralize 25.7 mL of a 0.388 M hydrobromic acid solution
vekshin1

Answer: Therefore, the volume of a 0.155 M potassium hydroxide solution  is 56.0 ml

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

According to the neutralization law,

n_1M_1V_1=n_2M_2V_2

where,

M_1 = molarity of HBr solution = 0.338 M

V_1 = volume of HBr solution = 25.7 ml

M_2 = molarity of KOH solution = 0.155 M

V_2 = volume of KOH solution = ?

n_1 = valency of HBr = 1

n_2 = valency of KOH = 1

1\times 0.338\times 25.7=1\times 0.155\times V_2

V_2=56.0ml

Therefore, the volume of a 0.155 M potassium hydroxide solution  is 56.0 ml

8 0
2 years ago
Which change happens during evaporation?
Shtirlitz [24]

Answer:

B.) A Liquid turns into Gas.

8 0
2 years ago
Which statement about covalent compounds is FALSE?
Vladimir79 [104]

Answer: b . Covalent compounds can contain a maximum  of 4 different atoms.

Explanation:

The covalent compounds are those compounds that are formed between the non-metals via sharing of electrons. The bonds so formed between these non-metallic atoms are covalent. There can be two or several different kinds of atoms that can form covalent bonds with each other in a single molecule. They use the valence electrons for sharing. The maximum number of valence electrons can be seven.

5 0
3 years ago
An object with a<br> mass of 7 g and a<br> volume of 10 mL is<br> most likely what<br> substance?
Archy [21]

Answer:

Ethanol

Explanation:

Given parameters:

Mass of the object  = 7g

volume of the object  = 10mL

Unknown:

The kind of substance it is = ?

Solution:

Since from the parameters, we can determine the density of the object. Density is an intensive property of substances.

So, we simply find the density and check a density table for the type of substance it is.

  Density is the mass per unit volume.

        Density  = \frac{mass}{volume}

Let us take the volume to cm³;

             10mL  = 10cm³

      Density  = \frac{7}{10} = 0.7g/cm³

This is most likely ethanol

8 0
2 years ago
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