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3 years ago

.) Calculate the mass in grams of each of the following samples.

2 answers:

6 0

The mass in grams would be
mass= Molar mass x numbers of mole
m(C2H6O)=nM
=0.251(2x12.01+1.008x6 + 16.00)
=11.56g

Alik [6]3 years ago

4 0

12+12+6(1)+16 =46 46*.251 = 11.546 gram

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3 Solve and derive the unit for Power

Mars2501 [29]

Answer:

Unit of power is watt

Explanation:

Power = rate of doing work

Power, P = W/t

Where

W is work done and t is time

The unit of work done is Joules and that of time is seconds.

Power, P = J/s

We know that, J/s = watts

Hence, the unit of power is watts.

7 0

3 years ago

A crystal of solute is added to a solution and the crystal remains undisolved.the solution is best classified as..

BaLLatris [955]

Answer:

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Explanation:

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3 years ago

starting with methane ,name all the steps and write the equations involved in tetrachlorination.Remember all arrows sharing move

anygoal [31]

Answer:

See Explanation and image attached

Explanation:

Methane is an alkane. The commonest chemical reaction that alkanes undergo is substitution. During a substitution reaction, one or more atoms of hydrogen is/are replaced in the alkane.

In methane, in the presence of sunlight and molecular chlorine gas, a homolytic fission of Cl2 occurs to yield chlorine radicals in an initiation step.

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4 0

3 years ago

A solution is known to contain only one type of cation. Addition of Cl1- ion to the solution had no apparent effect, but additio

zhannawk [14.2K]

Answer:

We can have: Calcium, strontium, or barium

Explanation:

In this case, we have to remember the solubility rules for sulfate $SO_4~^-^2$ and the chloride $Cl^-$ :

Sulfate

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Chloride

All chloride salts as SOLUBLE-EXCEPT those also containing: lead, silver, or mercury (I). ( $Pb^+^2~,Ag^+~,Hg_2~^+^2$ ), which are NOT soluble.

If we the salt formed a precipitated with the sulfate anion, we will have as possibilities "Calcium, silver, mercury (I), strontium, barium or lead". If We dont have any precipitated with the Chloride anion we can discard "Silver, mercury (I), lead" and our possibilities are:

"Calcium, strontium, or barium".

I hope it helps!

7 0

4 years ago

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I think the answer is A. Hope that helped :)

6 0

4 years ago