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nordsb [41]
3 years ago
13

3. Which element is most important for growing crops?

Chemistry
1 answer:
madreJ [45]3 years ago
8 0

Answer:

B. hydrogen

Explanation:

that's because hydrogen is an element.

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Determine the molecular formulas for compounds having the following empirical formula and molar mass:
boyakko [2]

Answer:

C6H24S3

Explanation:

To go from Empirical Formula to Molecular Formula, you have to divide the actual amount (given) by the molar mass of the EF:

192 / 2(12.01)+8(1.01)+(32.06)

= 2.99

= 3

Then you multiply every subscript in the EF by 3, which gives you C6H24S3

Hope this helps!

-Emma Victoria

5 0
3 years ago
HELP HELP HELP!!!!!!!!!!
Elenna [48]

the answer will there for be ironic

8 0
3 years ago
How many moles of water, H2O, contain 2.0×1022 molecules of water? (See the hints for assistance in interpreting scientific nota
hammer [34]
You have to use Avogadro's number which is 6.02x10^23.  The units of Avogadro's number is molecules/mole so you divide the number of molecules by Avogadro's number which will give you the number of moles.
(2.0x10^22 molecules)/(6.02x10^23 molecules/mole)=0.033 moles
5 0
4 years ago
Enter the chemical formula of a binary molecular compound of hydrogen and a Group 6A element that can reasonably be expected to
Ber [7]

Answer:

H₂Se

Explanation:

A way of estimating the acidity of a weak acid is by analizing the<em> stability of the formed anion</em>. In this case, we should find a Group 6A element that in its anionic forms (HX⁻ and X⁻²) is more stable than HS⁻ and S⁻², thus it would be more acidic in aqueous solution.

The anionic forms of Se are more stable than the forms of S, similarly to how Br⁻ is more stable than Cl⁻.

8 0
3 years ago
Which is a physical change? A) Rusting iron B) Burning paper C) Reacting baking soda and vinegar D) Separating a mixture of salt
Deffense [45]

Answer:

D

Explanation:

7 0
3 years ago
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