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aleksley [76]
3 years ago
15

How humans can utilise the carbon cycle

Chemistry
1 answer:
Advocard [28]3 years ago
5 0

Explanation:

Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere

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Question 7
motikmotik

Answer:

10 neutron

Explanation:

No.of neutron=Mass no. -- atm no.(or no.of p)

No of neutron=19 -- 9

=10

3 0
3 years ago
If the density of one cup of water is 1.0 g /mL what is the density of 2 cups of water
Leno4ka [110]
It would be 2.0 g / mL
5 0
2 years ago
Read 2 more answers
Draw structures from the following names, and determine which compounds are optically active:(c) 1,2-dibromo-2-methylbutane
dolphi86 [110]

The given compound 1,2-dibromo-2-methylbutane is an optically active compound .

Because this compound does not have plane of symmetry (POS) and center  of symmetry (COS) i.e. does not have di-symmetry . And also forms non superimposable mirror image . the compound is optically active .

It has  chiral center.

Here , the chiral carbon is attached to the 4 distinct groups such as :  methyl , ethyl , bromine , bromomethane .

<h3>What is di-symmetry?</h3>

Di-symmetry is that which have no center of symmetry and plane of symmetry and alternate axis of symmetry .

<h3>Chiral center :</h3>

Have Sp3 hybridized center (4sigma bond ) .

4 distinct group  is attached to the chiral atom. form non -superimposable mirror image .

<h3>What is optical isomerism ?</h3>

Same molecular formula and same structural formula . also have same physical and chemical properties .

They differ in their behavior towards plane polarized light (ppl) .

Learn more about chiral center here:

brainly.com/question/9522537

#SPJ4

8 0
2 years ago
In the following reaction, 2NaCl 2Na + Cl2 sodium and chlorine are products, salts, reactants, or ions?
avanturin [10]

The answer is: sodium and chlorine are products.

Balanced chemical reaction of sodium chloride decomposition:

2NaCl → 2Na + Cl₂.

Decomposition is reaction where one substance is broken down into two or more simpler substances.  

From one chemical compound (in this example sodium chloride) two new substances (sodium and chlorine) are produced.

6 0
3 years ago
Read 2 more answers
When 55.8 g of Fe reacts with Cl2 according to the equation 2Fe + 3Cl2 --&gt; 2FeCl3. How many moles of Cl2 are required to reac
harkovskaia [24]

Answer:

1.50 moles

Balanced equation:  2Fe + 3Cl₂ --> 2FeCl₃

<u>find moles of iron:</u>

moles = mass/Mr

moles = 55.8/56

moles = 0.9964 moles

<u>use molar ratio:</u>

2Fe : 3Cl₂

2 : 3

moles of Cl₂ = (0.9964/2)*3 = 1.50 moles

8 0
3 years ago
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