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3 years ago

Which of the following contain nitrogen?

Chemistry

2 answers:

attashe74 [19]3 years ago

8 0

Answer:

Amino acids contain nitrogen

Explanation:

Monosaccharides and polysaccharides are carbohydrates that are composed of carbon (C), hydrogen (H) and oxygen (O)

Fatty acids are carboxylic acids with a long hydrocarbon chain terminating in a carboxylic acid group. These are again composed of C, H and O

Amino Acids are organic compounds containing both carboxylic acid (COOH) and amino group (NH2). Thus amino acids contain C,H, O and N

iragen [17]3 years ago

3 0

Monosaccharides contain nitrogen

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Please help me find the correct answer, thank you.

alex41 [277]

Answer:

The third line

Explanation:

The first one us wrong because they're not all found inside,electron is outside.

The second one is wrong as I explained previously.

Lastly the fourth line is wrong because protons are found in the nucleus.

4 0

3 years ago

For the reaction ? Fe+? H2o ⇀↽? Fe3o4+? H2 , a maximum of how many grams of fe3o4 could be formed from 354 g of fe and 839 g of

Evgesh-ka [11]

The given reaction is:

3Fe + 4H2O → Fe3O4 + 4H2

Given:

Mass of Fe = 354 g

Mass of H2O = 839 g

Calculation:

Step 1 : Find the limiting reagent

Molar mass of Fe = 56 g/mol

Molar mass of H2O = 18 g/mol

# moles of Fe = mass of Fe/molar mass Fe = 354/56 = 6.321 moles

# moles of H2O = mass of h2O/molar mass of H2O = 839/18 = 46.611 moles

Since moles of Fe is less than H2O; Fe is the limiting reagent.

Step 2: Calculate moles of Fe3O4 formed

As per reaction stoichiometry:

3 moles of Fe form 1 mole of Fe3O4

Therefore, 6.321 moles of Fe = 6.321 * 1/ 3 = 2.107 moles of Fe3O4

Step 4: calculate the mass of Fe3O4 formed

Molar mass of Fe3O4 = 232 g/mol

# moles = 2.107 moles

Mass of Fe3O4 = moles * molar mass

= 2.107 moles * 232 g/mol = 488.8 g (489 g approx)

7 0

3 years ago

Read 2 more answers

Hydrogen atoms fuse together to form helium atoms. This releases a huge amount of energy in the form of _______ and ______. (cal

WARRIOR [948]

Answer:

Hydrogen atoms fuse together to form helium atoms. This releases a huge amount of energy in the form of Kinetic energy of the alpha particle and Electromagnetic radiation.

Explanation:

Nuclear Fusion is the Nuclear process in which the energy is produced when two lighter elements are collided together which are having some kinetic energy in them after that the two lighter nuclei will fuse together into a single heavier nuclei. This is opposite to what happens in Fission process in which the breaking up of atomic specie happens.

Both Nuclear Fission and Nuclear fission occurs with the release of massive amount of energy.

There are conditions for nuclear fusion to happens like, it requires 100 million's kelvin of temperature, also fusion will occur when the pressure is very high because increased pressure will result into squeezing of the atomic specie and hence they will fuse.

When the Hydrogen atom fuse together to form helium atoms. This release a huge amount of energy in the form of Kinetic energy of the alpha particle and Electromagnetic radiation.

7 0

3 years ago

What is the percent yield of NaCl if 31.0 g of CuCl2 reacts with excess NaNO3 to produce 21.2 g of NaCl?

Harrizon [31]

First you need to find the balanced chemical formula.
CuCl₂+2NaNO₃→2NaCl+Cu(NO₃)₂

Then you can find out how much NaCl 31.0g of CuCl₂ should produce using stoichiometry. Divide 31.0g by the molar mass of CuCl₂ (134.446g/mol) to get 0.2306mol CuCl₂. Than multiply 0.2306mol CuCl₂ by 2 to get 0.4612mol NaCl. Than multiply 0.4612mol by the molar mass of NaCl (58.45g/mol) to get 26.95g of NaCl.
that means that 100% yield would give you 26.95g of NaCl so to find percent yield divide 21.2 by 26.95 to get 0.7867 which is 78.7% yield

Therefore the answer is 78.7% yield.
I hope this helps. Let me know if anything is unclear

3 0

3 years ago

How many grams of oxygen is needed to completelt react with of 9.30 of aluminum

Leona [35]

Hey there!

Given the reaction:

4 AI + 3O2 ------> 2 AI2O3

4 moles Al --------- 3 moles O2

9.30 moles Al --------- ?? moles O2

9.30 * 3 / 4 => 6.975 moles of O2

Molar mass O2 => 32.0 g

Therefore:

6.975 * 32.0 => 223.3 g of Oxygen

Hope that helps!

5 0

3 years ago