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Ierofanga [76]
3 years ago
11

E. Top soil is fertile reason​

Chemistry
1 answer:
Lady_Fox [76]3 years ago
4 0

Answer:

Hello

Topsoil consists of most weathered mineral and organic material. Biological agents are also responsible for the breakdown of complex organic matter which releases simple nutrients. This process of mineralisation make soil fertile.

Explanation:

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the chemical compound C2F4 is used to make PTEE (Teflon). How manyC2F4 molecules are in 485 kilograms of this material?
monitta

Answer:

molecules=2.92x10^{27}moleculesC_2F_4

Explanation:

Hello,

In this case, we use the Avogadro's number to compute the molecules of C2F4 whose molar mass is 100 g/mol contained in a 485-kg sample as shown below:

molecules=485kgC_2F_4*\frac{1000gC_2F_4}{1kgC_2F_4} *\frac{1molC_2F_4}{100gC_2F_4}*\frac{6.022x10^{23}molecules C_2F_4}{1molC_2F_4}  \\\\molecules=2.92x10^{27}moleculesC_2F_4

Best regards,

5 0
4 years ago
What is the main difference between ionic<br> compounds and molecular compounds?
Sophie [7]

Answer:

¨molecular compounds are formed by the sharing of electrons, and ionic compounds are formed by the transfer of electrons¨

Explanation:

3 0
3 years ago
1. How many moles of calcium are in 525g Ca?
Novosadov [1.4K]

Answer:

13.1743

Explanation:

1 grams Calcium to mol = 0.02495 mol

6 0
3 years ago
When 23.6 mL of 0.500 M H2SO4 is added to 23.6 mL of 1.00 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to
hichkok12 [17]

Answer:

-112 Kj/mole (diprotic acid)

Explanation:

6 0
3 years ago
In this activity, you will be observing a reaction where copper and silver nitrate react to form copper (II) nitrate and silver.
aalyn [17]

Answer:

Copper(II) nitrate and silver

Explanation:

2AgNO₃(aq )  +  Cu  (s) -->  Cu(NO₃)₂(aq ) +  2Ag(s)

This can be called a redox reaction because silver nitrate is reduced and copper is oxidized.  This can also be called a single replacement reaction because copper replaces silver in the substance silver nitrate.

4 0
3 years ago
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