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Fynjy0 [20]
3 years ago
11

What is the name of this compound? H single bonded to N with a pair of electron dots above and a single bond to H below, single

bonded to the right to C with H above and below, and another C with H above, below, and right.

Chemistry
1 answer:
dybincka [34]3 years ago
4 0

Answer:

Ethanamine (also known as ethylamine)

Explanation:

The compound that is requested by the question is ethanamine. Its trivial name is ethylamine.

It is a compound that contained the ethyl moiety (CH3CH2-) as well as the amine moiety (-NH2).

Ethanamine has a structure that can easily be determined by the statements in the question.

The structure of ethanamine is shown in the image attached.

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How many atoms of aluminum are there in a sample with a mass of 100.0 grams?
Ratling [72]
In order to find the number of moles in a sample we are tasked with first finding the number of moles in that sample.  This is because the moles in a substance indicates the amount of the substance that contains the same number of particles as 12 g of the Carbon-12 isotope [or equivalent to 6.02 × 10²³ (which is used as a standard in the world of moles).

Now,
If moles = mass ÷ molar mass

then mol of aluminum = 100 g ÷ 27g/mol
                                   
                                     = 3.704 mol

Now that you have calculated the moles then you can do a simple ratio and multiplication at arrive at the number of atoms that would be present in the 100 g of aluminum.

                  if 1 mol of aluminum contains 6.02 × 10²³ atoms
                 then let 3.704 mol of aluminum contain x

                  ∴  x = 3.704 mol  × (6.02 × 10²³)
                         
                         = 2.23 × 10²⁴

∴ 100 g of Al would contain  ~ 2.23 × 10²⁴ atoms
4 0
4 years ago
PLS help I will give 100 points
goldenfox [79]

Answer:

3700000000

Explanation: Move decimal to the right of the amount the exponent is for 10 Give brainliest pls

4 0
3 years ago
A particular sample of pantothenic acid, a B vitamin, gives off 72.6 mL of nitrogen gas at 23 degrees c and 795 torr. What is th
disa [49]

Answer:

70.04 mL.

Explanation:

We can use the general law of ideal gas: V = nRT.

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant,

T is the temperature of the gas in K.  

If n is constant, and have two different values of V, P and T:

P₁V₁T₂ = P₂V₂T₁

P₁ = 795 torr, V₁ = 72.6 mL, T₁ = 23.0 °C + 273 = 296 K.

P₂ = 760 torr (standard pressure = 1 atm = 760 torr), V₂ = ??? mL,T₂ = 0.0 °C + 273 = 273 K (standard T).

∴ V₂ = P₁V₁T₂/P₂T₁ = (795 torr)(72.6 mL)(273 K)/(760 torr)(296 K) = 70.04 mL.

4 0
4 years ago
Its silver tarnishing physical or chemical change.
Mrac [35]
Yes it is a chemical change because it is changing color which shows a chemical change, plus it changes into another element
3 0
3 years ago
The jewelers' mass unit for diamond is the
maria [59]

Answer:

0.75 cm

Explanation:

You will convert 1.07 carat into mg then into g. You will multiply its reciprocal by 3.51g/cm to get the answer.

3 0
3 years ago
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