2 years ago

Make a conversion using 125g/L into units of cg/mL

Chemistry

1 answer:

suter [353]2 years ago

8 0

0.1 Centigrams Per Milliliter.
Always check the results; rounding errors may occur.

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2. Why should a magnesium ribbon be cleaned before burning in air ?

Nesterboy [21]

To remove magnesium oxide layer from the ribbon which may prevent or slow down the burning of magnesium ribbon.

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3 years ago

In a polyatomic ion, the -ate ending indicates one ____ oxygen than the -ite ending.

grigory [225]

In a polyatomic ion, the ate ending indicates one more oxygen than the ite ending. D. more.

6 0

3 years ago

A sample of SO2 gas occupies 45.6 L at 373 K and 3.45 atm. This sample contains how many moles of oxygen atoms?

lisov135 [29]

Answer:

10.28 mol

Explanation:

S + 2O = SO2

(atm x L) ÷ (0.0821 x K)

(3.45 x 45.6) ÷ (0.0821 x 373)

=5.13726

Then round it to significant figures

=5.14

5.14 mol SO2 x (2 mol O ÷ 1 mol SO2)

=10.28 mol O

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3 years ago

What is the pressure of 5.0 mol nitrogen (N2) gas in a 2.0 L container at 268

CaHeK987 [17]

Answer: 54.94atm

Explanation: Please see attachment for explanation

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3 years ago

A compound contains nitrogen and a metal. This compound goes through a combustion reaction such that compound X is produced from

tia_tia [17]

Answer:

The correct answer is: X is nitrogen dioxide, and Y is a metal oxide

Explanation:

Combustion of compound of containing nitrogen and metal will give nitrogen dioxide and metal oxide as product. During combustion reaction a compound reacts with oxygen in order to yield oxides of elements present in the compound.

The general equation is given as:

$4M_3N_x+7xO_2\rightarrow 4xNO_2+6M_2O_x$

Hence, the correct answer is :X is nitrogen dioxide, and Y is a metal oxide.

6 0

3 years ago