Since HCl04 is a strong acid, being [H+], and a molarity of 2.1 M.

To solve for pH:

pH = -log (M) = -log(2.1M) = -0.32, which is clearly a negative number.

However, to verify the answer, just use the pH meter in determining the pH of the solution.

5 0

2 years ago

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How many grams of Ar are there in 2.25 moles of Ar?

Arada [10]

There will be 89.865 grams of Ar. If you put it in sig figs, it will be rounded to 89.9g At.

5 0

3 years ago

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Calculate the number of carbon atoms contained in 5.6 g of C2H4

miss Akunina [59]

Molecular mass of C₂H₄ is,

M = 2×12 + 4×1 g/mol

M = 28 g/mol

Moles of C₂H₄ in 5.6 g of C₂H₄ :

n = 5.6/28 mol

n = 0.2 mol

Now, 1 mol of C₂H₄ contains 2 moles of carbon.

So, number of moles of carbon are :

n = 0.4 mol

We know, 1 mol of any atom contains 6.022 × 10²³ atoms.

So, number of carbon atoms are :

$N = 0.4 \times 6.022\times 10^{23} \\\\N = 2.409 \times 10^{23}$

Hence, this is the required solution.

4 0

2 years ago

What is the relationship between the moons surface gravity, lack of atmosphere, and temperature range?

luda_lava [24]

The main factor is the size of the moon. which is small compared to the earth, meaning that the moon has less gravity, and more gas is allowed to escape the surface, Which basically means theres no atmosphere.

8 0

3 years ago