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3 years ago

I need help with science: Which picture best shows a loud, low-pitched sound?

Chemistry

1 answer:

saw5 [17]3 years ago

3 0

Answer:

i think c had shows a loud pitched sound

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The leaves of the rhubarb plant contain high concentrations of diprotic oxalic acid (hooccooh) and must be removed before the st

VLD [36.1K]

Chemical reaction (dissociation) 1: C₂O₄H₂(aq) ⇄ C₂O₄H⁻(aq) + H⁺(aq).
Chemical reaction (dissociation) 2: C₂O₄H⁻(aq) ⇄ C₂O₄²⁻(aq) + H⁺(aq).
c(C₂O₄H⁻) = c(H⁺) = x.
c(C₂O₄H₂) = 0.0269 M.
pKa₁ = 1.23.
Ka₁ = 10∧(-1.23) = 0.059.
Ka₁ = c(C₂O₄H⁻) · c(H⁺) / c(C₂O₄H₂).
0.059 = x² / (0.0269 M - x).
Solve quadratic eqaution: x = c(H⁺) = 0.02 M.
pH = -log(0.02 M) = 1.7.

3 0

3 years ago

If you have 1.29 moles of NaCl in 4 liters of solution, what is the molarity of the solution?

Illusion [34]

Answer:

0.32M

Explanation:

Given parameters:

Number of moles of NaCl = 1.29moles

Volume of solution = 4liters = 4dm³

Unknown:

Molarity of solution = ?

Solution:

Molarity is one the ways of expressing the concentration of a solute in a solution. It is given as;

Molarity = $\frac{number of moles }{volume}$

The unit is given as M which is mol/dm³

Input the parameters and solve;

Molarity = $\frac{1.29}{4}$ = 0.32mol/dm³ or 0.32M

7 0

3 years ago

How many Atoms of Oxygen are in water H20? explain how u know

blagie [28]

There are ALOT because they would always come in and out and they will burst which creates more so techneclly there are infinate

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4 years ago

Read 2 more answers

if you are using a formula where you need the change in temperature, explain why it is not important whether your temperatures a

alexandr1967 [171]

Answer:

This is because, Kelvins and Celcius degrees both agree at fixed points i.e; the lower fixed point and upper

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3 years ago

How many moles of Cu2S can be formed from 11 moles of HCl?

natima [27]

Answer:

Explanation:

4 0

2 years ago

I need help with science: Which picture best shows a loud, low-pitched sound?​

I need help with science: Which picture best shows a loud, low-pitched sound?