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Helga [31]
3 years ago
14

Ashley conducts an investigation on the effects of water amounts for seed sprouting

Chemistry
2 answers:
vova2212 [387]3 years ago
6 0
A because she can record
olga_2 [115]3 years ago
3 0
I think it is d. Hope this helps
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What is the concentration of a solution in which 60 g of NaCl are dissolved in 1.0 L of water?
Dima020 [189]
What am I answering????
7 0
3 years ago
Use the following information to calculate the concentration, Ka and pka for an unknown monoprotic weak acid. (8 pts.) 20.00 mL
lisov135 [29]

Answer:

Concentration: 0.185M HX

Ka = 9.836x10⁻⁶

pKa = 5.01

Explanation:

A weak acid, HX, reacts with NaOH as follows:

HX + NaOH → NaX + H2O

<em>Where 1 mole of HX reacts with 1 mole of NaOH</em>

To solve this question we need to find the moles of NaOH at equivalence point (Were moles HX = Moles NaOH).

18.50mL = 0.01850L * (0.20mol / L) = 0.00370 moles NaOH = Moles HX

In 20.0mL = 0.0200L =

0.00370 moles HX / 0.0200L = 0.185M HX

The equilibrium of HX is:

HX(aq) ⇄ H⁺(aq) + X⁻(aq)

And Ka is defined as:

Ka = [H⁺] [X⁻] / [HX]

<em>Where [H⁺] = [X⁻] because comes from the same equilibrium</em>

As pH = 2.87, [H+] = 10^-pH = 1.349x10⁻³M

Replacing:

Ka = [H⁺] [H⁺] / [HX]

Ka = [1.349x10⁻³M]² / [0.185M]

Ka = 9.836x10⁻⁶

pKa = -log Ka

<h3>pKa = 5.01</h3>
6 0
2 years ago
Please identify each element associated with the orbital notation or electron configuration. Note: One “slash” is one electron,
mylen [45]

Picture is upside

Explanation:

I can't read upsidedown

4 0
2 years ago
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What is the bond order for a single covalent bond?​
hram777 [196]

Answer:

We typically represent covalent bonds with a dash ( - ) between the atoms. This indicates a single bond. Ex: Cl - Cl

Single bond, double bond, triple bond.

Explanation:

We call it a single covalent bond because the atoms are sharing a single pair of electrons.

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3 years ago
A solid keeps its shape due to which of the following factors? (3 points)
algol [13]

Answer: Attractive forces between particels

Explanation:

8 0
2 years ago
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