2 years ago

CO2 + H2O - H2CO3 The reaction above is classified as

Chemistry

2 answers:

zhuklara [117]2 years ago

5 0

Answer:

The answer is Synthesis in CK-12

Explanation: synthesis (combination reaction) is the combination of 2 or more substances to form a single substance.

Elena L [17]2 years ago

3 0

Answer:

Nonmetal oxides react with water to form oxyacids. Ex. CO2 + H2O → H2CO3 Page 3 Decomposition - compound (reactant) breaks down into 2 or more simpler substances.

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Svet_ta [14]

Yes of course!!!! :)

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2 years ago

A scientist digs up sample of arctic ice that is 458,000 years old. He takes it to his lab and finds that it contains 1.675 gram

Fiesta28 [93]

Answer:

6.70 grams of krypton-81 was present when the ice first formed

Explanation:

Let use the below formula to find the amount of sample

$N= N_0(\frac{1}{2})^n$

where

$n = \frac{t}{t_{\frac{1}{2}}}$

here

t = 458,000 years

$t_{\frac{1}{2}}$ = 229,000

$\frac{t}{t_{\frac{1}{2}}}$ = \ $\frac{ 458,000}{229,000}$

n = $\frac{t}{t_{\frac{1}{2}}}$ = 2.000

Now substituting the values

$1.675 = N_0(\frac{1}{2})^{2.000}}$

$1.675 = N_0\times (0.2500)$

$N_0= \frac{1.675}{0.2500}$

$N_0=6.70$

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2 years ago

PLEASE HELP!!!!!

Free_Kalibri [48]

Umm I think it might be a b c in order?

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2 years ago

Hydrochloric acid reacts with sodium hydroxide to form water and sodium chloride. Hydrochloric acid is an extremely acidic, clea

Brut [27]

The answer is C.

You're welcome!

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2 years ago

What does weight measure?

Maru [420]

Answer:

C Force of gravity acting on an object

Explanation:

Hope that helps

have A good day

can I i have brain pls

8 0

2 years ago

Read 2 more answers