2 years ago

I. TRUE OR FALSE STATEMENTS

Chemistry

1 answer:

Mkey [24]2 years ago

8 0

Answer:

a)true. b)true c)false d)true e)false f)false g)true h)true

You might be interested in

true or false: Mendeleev's arrangement of elements in the periodic table was based on the observations and experiments of his pr

Oduvanchick [21]

This answer is true

7 0

3 years ago

Read 2 more answers

Hydroxide is an example of _______ and it's formula is OH-.

Ksju [112]

Answer:

polyatomic ion

Explanation:

It is polyatomic ion have a great day marry christmass

6 0

3 years ago

The average temperature of healthy person is 98.6°F. What is it in Celsius scale?

meriva

Answer:

37 Degrees Celsius

Explanation:

3 0

2 years ago

Distinguish between kinetic energy and poteintial energy-

topjm [15]

Answer:

kinetic energy is energy possessed due to its motion while potential energy is energy possessed by a body by virtue of its position relative to others

6 0

3 years ago

Find the percent composition of OXYGEN in Manganese (III) nitrate, Mn(NO3)3.

BaLLatris [955]

Answer:

59.8%

Explanation:

First find the Mr of manganese (III) nitrate.

Mr of Mn(NO₃)₃ = 54.9 + (14 × 3) + (16 × 3 × 3) = 240.9

Since we have to find the percentage composition of oxygen, we need to find the Mr of oxygen in the compound, which is:

Mr of (O₃)₃ = (16 × 3) × 3 = 144

Now we can find percentage composition / percentage by mass of oxygen.

% composition = $\frac{Mr\ of\ oxygen\ in\ compound}{Mr\ of\ compound}$ × 100

% composition = $\frac{144}{240.9}$ × 100 = 59.776%

∴ % compostion of oxygen in maganese(III)nitrate is 59.8% (to 3 significant figures).

8 0

2 years ago