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Naya [18.7K]
3 years ago
13

Martha has a large amount of 1.25 M H2SO4 in her lab. She needs 36 grams of H2SO4 for a chemical reaction she wants to perform.

How many liters of solution should she use?
Chemistry
2 answers:
Zepler [3.9K]3 years ago
8 0
Data:

Molarity, M = 1.25 M

mass, m = 36 grams

Solute, H2SO4

Formulas:

M = n / V => V = n / M

n = mass in grams / molar mass

Solution:

molar mass of H2SO4 = 98.079 g/mol

n = 38 g / 98,079 g/mol = 0.3874 mol

V = 0.3874 mol / 1.25M = 0.31 liter

Answer: 0.31 liter
Wewaii [24]3 years ago
7 0

Answer:

0.29 L

Explanation:

Just confirming this.

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Can a non-polar molecule contain polar bonds? Explain your answer with an example.
Rom4ik [11]

Answer:

Yes

Explanation:

It is possible that a non polar molecule contain polar bonds.

Consider the example of CO₂:

In carbon dioxide the atoms are arranged in angle of 180 degree and molecule is linear. So in this way the net dipole movement becomes zero and molecule is non polar.

But when we see the electronegativity of both bonded atoms the oxygen is more electronegative than carbon. The oxygen atom have partial negative charge and carbon have partial positive charge because shared pair of electron is more attracted towards the oxygen. Thus bond become polar because one end is partial positive and other is partial negative. Thus a non polar carbon dioxide molecule have polar bond.

8 0
3 years ago
The mass of a deuterium nucleus 21H is less than its components masses. Calculate the mass defect.________ amu
Inessa [10]

Answer:

The mass defect of a deuterium nucleus is 0.001848 amu.

Explanation:

The deuterium is:

^{A}_{Z}X \rightarrow ^{2}_{1}H  

The mass defect can be calculated by using the following equation:

\Delta m = [Zm_{p} + (A - Z)m_{n}] - m_{a}

Where:

Z: is the number of protons = 1

A: is the mass number = 2      

m_{p}: is the proton's mass = 1.00728 amu  

m_{n}: is the neutron's mass = 1.00867 amu

m_{a}: is the mass of deuterium = 2.01410178 amu

Then, the mass defect is:

\Delta m = [1.00728 amu + (2- 1)1.00867 amu] - 2.01410178 amu = 0.001848 amu

Therefore, the mass defect of a deuterium nucleus is 0.001848 amu.

I hope it helps you!  

5 0
3 years ago
Read 2 more answers
Mr. martin's spanish class is 45 minutes long. if it starts at 3:30, what time does it end?
Rzqust [24]
Anwser: 4:15

You add 45 minutes to 30 minutes which comes out to be 75 minutes, subtract that from 60 because there are only 60 minutes in an hour, which is 15.. so it's 4:15
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when performing solubility studies, why you should use deionized or distilled water rather than tap water?
Cerrena [4.2K]

Answer:

The science project or the proposed test using the water as a control element in the experiment determines whether you choose to use deionized water or distilled water. Of the two, distilled water is the purest because the water undergoes boiling that kills off most organic contaminants.

Explanation:

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5 0
3 years ago
How many valence electrons are in a molecule of phosphoric
Zanzabum

The number of valence electrons for each molecule or ion is shown beneath the structure. Remember hydrogen will not have more than two electrons. This hydrogen is part of a covalent bond (sharing two electrons). A double bond here would cause hydrogen to share four electrons with phosphorus.

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