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Anastaziya [24]

2 years ago

10

Give me 3 facts and 3 Superstitious about the moon

1 answer:

andreyandreev [35.5K]2 years ago

6 0

Answer:

On this 40th anniversary of the moon landing, let's consider where these beliefs and urban legends come from.

Explanation:

im not sure.

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When blood passes through the lungs, carbon dioxide and water are formed from carbonic acid dissolved in the blood. The carbon d

NeTakaya

Answer is: <span>decomposition.

Balanced chemical reaction: H</span>₂CO₃ → CO₂ + H₂O.
H₂CO₃ is carbonic acid.
CO₂ is carbon (IV) oxide or carbon dioxide.<span>
Chemical decomposition is the separation of a single chemical compound (in this example </span>carbonic acid<span>) into its two or more simpler compounds (in this example water and carbon dioxide).</span>

7 0

3 years ago

Read 2 more answers

Is cellulose living material?

Natasha_Volkova [10]

Yes cellulose is alive because it contains cells

3 0

3 years ago

Breathe in air container more ____ than breathed out air

TEA [102]

Answer:

c

Explanation:

carbon dioxide ......

5 0

3 years ago

Let's say you have a mixture for which you want to check the composition. Unfortunately, after quite a while, and several TLC an

KIM [24]

Answer:

mmmmmmmmmmmmmm

Explanation:

7 0

3 years ago

When 15.3 g of sodium nitrate, NaNO3,was dissolved in water in a calorimeter, the temperature fell from 25.00oC to 21.56oC. If t

satela [25.4K]

Answer:

20.468 kilo Joules is the enthalpy change when one mole of sodium nitrate dissolves.

Explanation:

Heat lost by solution ad calorimeter = Q

Heat capacity of solution ad calorimeter = C = 1071 J/°C

Change in temperature = ΔT = 21.56°C - 25.00°C = -3.44°C

$Q=C\times Delta T$

$Q=1071 J/^oC\times (-3.44^oC)=-3,684.24 J$

Heat gained by sodium nitrate = -Q = -(-3,684.24 J)=3,684.24 J

Moles of sodium nitrate = $\frac{15.3 g}{85 g/mol}=0.18 mol$

When 0.18 mole of sodium nitrate was dissolved in water 3,684.24 joulesof heat was absorbed by it.

Then heat absorbed by 1 mole of sodium nitrate :

$\frac{3,684.24 J}{0.18}=20,468 J=20.468 kJ$

1 J = 0.001 kJ

20.468 kilo Joules is the enthalpy change when one mole of sodium nitrate dissolves.

8 0

3 years ago