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lara [203]
3 years ago
9

Which of the following statements about atomic mass is true? (help asap)

Chemistry
1 answer:
agasfer [191]3 years ago
6 0

Answer:

B

Explanation:

Because the atomic mass is the mass of a single atom of a chemical elements

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Is it necessary to know the exact volume of the unknown acid or base to be titrated?
Darina [25.2K]
Yes, It is important to know the volume of Unknown acid or base to be titrated.

Titration is carried out in order to find out the concentration (i.e. molarity) of unknown acid or base. In this process a standard solution of acid or base is taken and is titrated with known volume of of titrant. At end point (neutralization) the amount of standard titrant utilized is calculated and following formula is employed to calculate the unknown concentration of unknown solution.

                                     M₁V₁/n₁  =  M₂V₂/n₂
7 0
3 years ago
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Dichlorine monoxide, Cl2O is sometimes used as a powerful chlorinating agent in research. It can be produced by passing chlorine
Amiraneli [1.4K]

Answer:

% yield =  82.5%

Explanation:

HgO + 2Cl₂ →  HgCl₂ +  Cl₂O

Our reactants are:

  • HgO and Cl₂

Our products are:

  • HgCl₂ +  Cl₂O

We do not have information about moles of reactants, but we do know the theoretical yield and the grams of product, in this case Cl₂O, we have produced.

Percent yield = (Yield produced / Theoretical yield) . 100

Theoretical yield is the mass of product which is produced by sufficent reactant. We replace data:

% yield = (0.71 g/0.86g) . 100 = 82.5%

7 0
3 years ago
Define an ion in chemistry
REY [17]
Ion is an atom or molecule with a net electric charge due to loss or gain of one or more electrons.
4 0
4 years ago
NEED ANSWER ASAP<br> When a solid goes straight to a gas this is know as _____________.
Salsk061 [2.6K]

Answer:

Sublimation

Explanation:

7 0
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From Utica, New York, Polaris is observed at an altitude of approximately
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Answer:

43.0966

Explanation:

Utica GPS Location, New York, U.s. Elevation: 43.09666.

The elevation of Polaris, as though from a New York spot, was estimated at 43,09666 °

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3 years ago
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