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Stolb23 [73]
3 years ago
7

Which element ends in 4d2

Chemistry
1 answer:
Tju [1.3M]3 years ago
3 0

Answer:

Zr (Zirconium)

Explanation:

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d2

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Novosadov [1.4K]

Answer:

C

Explanation:

It can already be seperated because the mixture hasn't disolved into the water yet.

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Which type of drug is heroin an example of ?
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in an experiment 3.5g of element A reacted with 4.0g of element G to form a compound Calculate the empirical formula for this co
kolezko [41]

Additional information

Relative atomic mass(Ar) : A=7, G=16

The empirical formula : A₂G

<h3>Further explanation</h3>

Given

3.5g of element A

4.0g of element G

Required

the empirical formula for this compound

Solution

The empirical formula is the smallest comparison of atoms of compound forming elements.

The empirical formula also shows the simplest mole ratio of the constituent elements of the compound

mol of element A :

\tt mol=\dfrac{mass}{Ar}\\\\mol=\dfrac{3.5}{7}=0.5

mol of element G :

\tt mol=\dfrac{4}{16}=0.25

mol ratio A : G = 0.5 : 0.25 = 2 : 1

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3 years ago
4HCI + O2 =2H20 + Cl2
Sergio039 [100]

The rate of the backward reaction increases

Explanation:

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Increasing H₂O concentration is then reaction, therefore, stymies the forward reaction and favors the reserves reaction. This is because the reverse reaction will lead to reduced pressure.

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Which statement is true about elements?
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