3 years ago

Help me if not clear tell me

Chemistry

1 answer:

LenKa [72]3 years ago

3 0

Answer:

make it clearer

Explanation:

You might be interested in

Environmental studies usually involve an analysis of precipitation and its response to pollution. To quantify the degree of cont

LuckyWell [14K]

The molarity of the lake water is 0.00001 M and the pH of lake water is 5.

The lake water is acidic.

Explanation:

Data given:

molarity of base solution Mbase = 0.1 M

volume of the base solution Vbase = 0.1 ml or 0.0001 litre

volume of lake water Vlake = 1000ml or 1 litre

molarity of the lake water, Mlake = ?

Using the formula for titration:

Mbase X Vbase = Mlake X

Mlake = $\frac{Mbase X Vbase }{Vlake}$

Putting the values in the equation:

Mlake = $\frac{0.0001 X 0.1}{1}$

Mlake = 0.00001 M

The pH of the lake water will be calculated by using the following formula:

pH = - $log_{10}$ [ $H^{+}$ ]

pH = - $log_{10}$ [ 0.00001]

pH = 5

4 0

3 years ago

It is true/falseit that when hydrogen cyanide, h c n , dissolves in water, the solution is weakly conducting and acidic in natur

cluponka [151]

False is the correct answer.

8 0

3 years ago

0 / 5 pts Question 3 In the reaction of aluminum with iron III oxide, if you start with 54.2 grams of aluminum, how many grams o

adelina 88 [10]

Could you please mark me as brainliest?

Answer: 160.40 g Fe2O3 are needed.

Explanation:

Balanced equation: 2 Al + Fe2O3 —> Al2O3 + 2Fe

54.2 g Al * 1 mol Al / 26.98 g Al * 1 mol Fe2O3 / 2 mol Al * 159.69 g Fe2O3 / 1 mol = 160.40 g Fe2O3 are needed.

3 0

3 years ago

Select the correct answer. When a candle burns, which forms of energy does the chemical energy in the candle change to?, A. ligh

sineoko [7]

Answer:

B heat

Explanation:

6 0

3 years ago

Can you mix copper with rubbing alcohol

lyudmila [28]

I don’t know but you can try it

5 0

3 years ago