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Brrunno [24]
3 years ago
14

What is the relative formula mass of Ca(NO3)2? Ar of Ca = 40. Ar of N = 14 and Ar of O = 16.

Chemistry
1 answer:
-Dominant- [34]3 years ago
3 0

Answer:

164

Explanation:

40+2(14)+6(16)

40+28+96=164

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The pOH of a solution is 9.70. what is the H+ concentration in the solution ?
Scrat [10]

Answer:

The H+ concentration is 10^{-4.3} M

Explanation:

We know that for any solution,

pOH + pH = 14

Given,

pOH = 9.70,

Therefore using formula,we get,

pH = 14 - pOH,

pH = 14 - 9.70;

pH = 4.30

We also know,

If Concentration of H+ in a solution in C,

Then,

pH = -log(C) ------(Formula 1) and  C = 10^{-pH}  ----(Formula 2)

Therefore,

using formula 2, we get,

C = 10^{-pH}  

C = 10^{-4.30}M.

Therefore concentration of H+ in the given solution is 10^{-4.3} M

6 0
3 years ago
1. Determine the acid type for HBr.<br> O Brønsted-Lowry<br> O Ahrrenius<br> O Lewis<br> not a base
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Explanation:

7 0
3 years ago
Realizar los isomeros geométricos para las siguientes estructuras: 2-hepteno y Ácido 2-butenoico
kramer

Answer:

The cis-trans isomerism (or geometric isomerism ) is a type of stereoisomerism of alkenes and cycloalkanes . A distinction is made between the cis isomer , in which the substituents are on the same side of the double bond or on the same face of the cycloalkane. This is an electronic version in English. [ 1 ]

Their characteristics are:

They both have the same formula.They have different chemical and physical properties.The IUPAC advises against the use of the term geometric isomerism. [ 2 ]

4 0
3 years ago
In general, what causes a sea breeze?
ella [17]

Answer:

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Explanation:

Your answer is C ! <3

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3 years ago
What is the approximate pH of a .06 M solution of CH3COOH given that Ka= 1.78*10-5
Step2247 [10]
CH₃COOH ⇔ CH₃COO⁻ + H⁺

[CH₃COO⁻] = [H⁺] = x

K=\frac{|CH_{3}COO^{-}|*|H^{+}|}{|CH_{3}COOH|}=\frac{x^{2}}{|CH_{3}COOH|}\\\\&#10;1,78*10^{-5}=\frac{x^{2}}{0,06} \ \ |*0,06\\\\&#10;0,1068*10^{-5}=x^{2}\\\\&#10;x_{1}\approx0,001 \ \land \ \ x_{2}=\approx-0,001\\\\&#10;pH=-log|H^{+}|=-log0,001=3
4 0
3 years ago
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