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Vikentia [17]
3 years ago
7

What is the molar concentration of 2.0 mol of KCl dissolved in 1000 mL of solution?

Chemistry
1 answer:
Mnenie [13.5K]3 years ago
5 0

Explanation:

molar concentration = No.of moles of solute ÷ volume of solution (in litres)

= 2.0 × ( 1000 × 0.001 )

= 2

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Metal M has only one oxidation state and forms a compound with the formula MHCO3. Which formula is correct? A.MNO3 b.MNH4 c.M(NO
never [62]

Answer:

The compound with the correct formula is;

A. MNO₃

Explanation:

The number of oxidation states in the metal, M = One oxidation state

The formula of the compound formed by the metal, M = MHCO₃

We note that the ion HCO₃⁻, known as hydrogen carbonate has an oxidation number of -1

Similarly nitrate, NO₃⁻ has an oxidation number of -1, therefore, the metal M can form similar compound formed with HCO₃⁻ with nitrate, and we have;

The possible compounds formed by the metal 'M' includes MHCO₃ and MNO₃.

5 0
3 years ago
two substances are poured into a cup and a reaction occurs. a thermometer is paced in the cup and the temperature in the surroun
STALIN [3.7K]
Endothermic because it 'sucks' the energy and that's why temperature drops
3 0
4 years ago
If i give you a 5% sucrose solution and a 10% sucrose solution, in which is the water less concentrated?
Mnenie [13.5K]
Of course 10% sucrose solution


sorry if im wrong
6 0
3 years ago
PLEASE ANSWER ASAP!!!!!!! 50 points if the answer is correct!
Ad libitum [116K]

5

 mL acetic acid

95

mL water

Explanation:

Since

5

%

of the vinegar, by volume, is acetic acid, and we have

100

mL of vinegar, we have

5

mL of vinegar.

Similarly, we have

100

%

−

5

%

=

95

%

being water, so we have

95

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8 0
3 years ago
2Al + 3H2SO4 → Al2(SO4)3 + 3H2 which are the following redox reaction.. For rach redox reaction identity the oxidizing agen and
ser-zykov [4K]

Answer:

  • Oxiding agent - sulphuric acid (3H2SO4)
  • Reducing agent - aluminium (Al)

Explanation:

Oxiding agent act as "Reduction" which loses oxygen in the product side.

Reducing agent act as "Oxidation" which gains oxygen.

5 0
3 years ago
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