3 years ago

2. Which substance has the greatest molecular

Chemistry

1 answer:

storchak [24]3 years ago

4 0

Answer:

Choice 4 easy

Explanation:

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12) Balance the following chemical equation: Zn + H3PO4 Zn3(PO4)2 + H2

KIM [24]

Answer:

Sorry I am not very good at chemistry.

Explanation:

7 0

3 years ago

What's the name of the process that occurs as the dry ice undergoes a phase change in the flask

arlik [135]

Your answer should be sublimation

3 0

3 years ago

pls help I will mark brainliest. Someone made a copy of an analog wave and a digital wave. Compare the copies with the original

azamat

The left one because it’s bigger waves

7 0

3 years ago

The mass of C02 contains same number of molecules as there are number of atoms in 2.3 g of sodium

Lunna [17]

1- mole of any Substance will have the same number of Molecules.

Molecular weight of CO2= 44

Molecular weight of H20= 18

So 18 g of H20 will contain the same Number of molecules as in 44 g of CO2.

Therefore 7.2 g of H2O will have same Number of Moleculesas in =7.2/18 x 44

= 17.6 g of CO2.

8 0

3 years ago

The pH of a solution is 9.63 ± 0.03 . What is the concentration of H + in the solution and its absolute uncertainty?

Helga [31]

Explanation:

The pH of the solution is 9.63 ± 0.03.

we know that

pH= -log[H+]

⇒[H+] = $10^{-pH}$

= $10^{-9.63}$ = $2.34\times10^{-10}$

Now to find absolute error we use the formula

Absolute error/[H+] =ln10(uncertainity)

Absolute error = ln10×[H+] ×0.03

$=ln10\times2.34\times10^{-10}\times0.03$

= $9.45\times10^{-12}$

8 0

3 years ago