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3 years ago

What evidence exists for a more recent increase in greenhouse gas concentrations in the atmosphere

Chemistry

1 answer:

TiliK225 [7]3 years ago

6 0

Answer:

-data collected from Mauna Loa shows an increase in CO2 by 20% in the last 40 years

-ice core data shows links between CO2 and temperature, with a recent increase in both

-data from ice cores and other proxies show increases in CO2, CH4, and N2O since the Industrial Revolution

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How do you find the empirical formula of magnesium oxide?

Ede4ka [16]

N(Mg) : n(O)
1 : 1
the ratio is one to one

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3 years ago

What is the Na+ concentration in each of the following solutions:

KIM [24]

<h3>a) <u>Answer;</u></h3>

A- 7.30 M

<h3><u>Explanation;</u></h3>

3.65 Sodium sulfate

Na2(SO4) dissociates to give sodium ions and sulfate ions.

Na2(SO4) → 2Na+ + SO₄²₋

Therefore, twice the concentration of sodium ions as far as molarity is concerned.

<em><u>Concentration of sodium ions = 3.65 × 2= 7.3 M</u></em>

<h3>b) <u> Answer;</u></h3>

B- 2.76 M

<h3><u>Explanation;</u></h3>

b) 1.38 M sodium carbonate

Sodium carbonate dissociates completely to yield Sodium ions and carbonate ions

Na₂CO₃ → 2Na+ + CO₃²₋

The concentration of sodium ions will be twice the concentration of initial compound since it has a ratio of two.

<em>Concentration of sodium ions = 1.38 ×2 </em>

<h3>c) <u>Answer;</u></h3>

<h3><u>Explanation;</u></h3>

b) 0.785 sodium bicarbonate

Sodium bicarbonate dissociates completely to sodium ions and a bicarbonate ions.

NaHCO₃ →Na+ + HCO₃⁻

In this case the concentration of Na+ will be equal to the concentration of the original compound since they share the same ratio.

Thus; <em><u>Na+ concentration = 0.785 M</u></em>

7 0

3 years ago

Read 2 more answers

According to the kinetic theory of gases a gas can be compressed much more than a liquid or solid because

xeze [42]

Because gases are less dense than a liquid and a solid

3 0

3 years ago

Read 2 more answers

A bug travels at the rate of 3.0 miles per hour. How fast is this in um/nsec? Hint: 2.54cm = 1 inch and 1 mile = 5,280 feet

kirza4 [7]

Note that
1 mi = 1609.34 m = 1609.34 x 10⁶ um
1 h = 3600 s = 3600 x 10⁹ ns

Therefore the speed of the bug is
(3.0 mi/h)*(1609.34x10⁶ um/mi)*(1/3600x10⁹ h/ns)
$(3.0 \, \frac{mi}{h}) (1609.34\times10^{6}\, \frac{um}{mi} )( \frac{1}{3600\times 10^{9}} \frac{h}{ns} ) =1.34\,\times 10^{-3} \, \frac{um}{ns}$

Answer: $1.34 \times 10^{-3} \, \frac{\mu m}{ns}$

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3 years ago

How many liters of N2 are in 3.32 moles at STP?

makkiz [27]

Answer:

1). 107.2L

Explanation:

The idea here is that if all the gases thaction are kept under te same conditions for pressure and temperature, then you can treat the mole ratios that exist between them as volume ratios.

7 0

3 years ago