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3 years ago

8

Why can't the reaction, ZnCl2 + H2 → Zn + 2HCI, occur naturally?

1 answer:

Llana [10]3 years ago

7 0

Answer:

It is fairly obvious that zinc metal reacts with aqueous hydrochloric acid! The bubbles are hydrogen gas. ... In fact, electrons are being transferred from the zinc atoms to the hydrogen atoms (which ultimately make a molecule of diatomic hydrogen), changing the charges on both elements.

Explanation:

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How did plastics become the material of choice for so many varied applications?

Maslowich

Answer:

people as: it Is less expensive. easy to carry

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3 years ago

What is the molecular formula of a compound with the empirical formula

ipn [44]

Answer: $C_2H_2O_2$

Explanation:

Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

The empirical formula is $CHO$

The empirical weight of $CHO$ = 1(12)+1(1)+1(16)= 29 g.

The molecular weight = 60 g/mole

Now we have to calculate the molecular formula:

$n=\frac{\text{Molecular weight}}{\text{Equivalent weight}}=\frac{60}{29}=2$

The molecular formula will be= $2\times CHO=C_2H_2O_2$

Thus molecular formula will be $C_2H_2O_2$

5 0

3 years ago

How many moles are in 1.51 x 10^24 molecules of water?

lyudmila [28]

Answer:One mole of HBr has 6.02 x 1

0

23

molecules of HBr.

1 mole of HBr = 6.02 x 1

0

23

molecules of HBr.-----(a)

X mole of HBr has 1.21 x

10

24

molecules of HBr.

X mole of HBr = 1.21 x

10

24

molecules of HBr------(b)

Taking ratio of (a) and (b)

X / 1 = 1.21 x

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24

/ 6.02 x 1

0

23

X= 2.009 moles.

Explanation:

3 0

3 years ago

Which statement is correct for the element of proton number 19?

BlackZzzverrR [31]

Answer:

D

Explanation:

From periodic table : proton number 19 corresponds to K (potassium)

which is very reactive with water

8 0

2 years ago

What tendency is the standard reduction potential of an element based on?

Y_Kistochka [10]

I think the answer is B :)

3 0

3 years ago

Read 2 more answers