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telo118 [61]
3 years ago
6

Science stuff i got confused can someone pls help. PLS & THX

Chemistry
1 answer:
olga nikolaevna [1]3 years ago
3 0

Answer:

A Scientific Law

Explanation:

'When a substance goes through a chemical change the amount of mass and matter cannot be created nor destroyed.' This a statement of The Law of Conservation of Mass. This Scientific Law is simply titled as a law because every time experimented, the results are predictable and is natural occurrence.

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The molar heat capacity of a compound with the formula C2H6SO is 88.0 J/mol-K. The specific heat of this substance is __________
lisabon 2012 [21]

Answer : The specific heat of this substance is, 1.13 J/g.K

Explanation :

Molar heat capacity : It is defined as the amount of heat absorbed by one mole of a substance to raise its temperature by one degree Celsius.

As we are given that the chemical formula of compound is, C_2H_6SO

First we have to calculate the molar mass of given compound.

Molar mass of C_2H_6SO = 2(12g/mol)+6(1g/mol)+32g/mol+16g/mol

Molar mass of C_2H_6SO = 78 g/mol

Now we have to calculate the specific heat of this substance.

Specific heat of this substance = \frac{\text{Molar heat capacity of a compound}}{\text{Molar mass of }C_2H_6SO}

Specific heat of this substance = \frac{88.0J/mol.K}{78g/mol}

Specific heat of this substance = 1.13 J/g.K

Thus, the specific heat of this substance is, 1.13 J/g.K

7 0
4 years ago
A silver rod and a SHE are dipped into a saturated aqueous solution of silver oxalate, Ag2C2O4, at 25°C. The measured potential
nika2105 [10]

Answer:

3.50*10^-11 mol3 dm-9

Explanation:

A silver rod and a SHE are dipped into a saturated aqueous solution of silver oxalate, Ag2C2O4, at 25°C. The measured potential difference between the rod and the SHE is 0.5812 V, the rod being positive. Calculate the solubility product constant for silver oxalate.

Ag2C2O4 -->  2Ag+  +  C2O4 2-

So Ksp = [Ag+]^2 * [C2O42-]

In 1 L, 2.06*10^-4 mol of silver oxalate dissolve, giving, the same number of mol of oxalate ions, and twice the number of mol (4.12*10^-4) of silver ions.

So Ksp = (4.12*10^-4)^2 * (2.06*10^-4)

= 3.50*10^-11 mol3 dm-9

7 0
3 years ago
1
balandron [24]

Answer:

Judges and justices serve no fixed term — they serve until their death, retirement, or conviction by the Senate. By design, this insulates them from the temporary passions of the public, and allows them to apply the law with only justice in mind, and not electoral or political concerns.

6 0
3 years ago
Read 2 more answers
. In lab we used 40 ml of 6M NaOH in making soap.<br>How many moles of NaOH was in this volume?​
Firdavs [7]

Hey there!:

Molarity of NaOH = 6 M or 6 mol/L

Volume of NaOH = 40 mL

Therefore , number of moles of NaOH:

40 mL  =( 6 mol / 1000 mL)*40=

6/ 1000 * 40 =>  0.24 moles of NaOH

Hope this helps!

8 0
3 years ago
If the pH is 9, what is the concentration of hydroxide ion? Is this solution
kogti [31]

Answer:

hydrogen peroxide in my place and don't have time And the Base and don't think I will have a clue

8 0
3 years ago
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