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arsen [322]
3 years ago
6

Any method of determining whether an event or object is older or younger than others

Chemistry
2 answers:
anyanavicka [17]3 years ago
7 0

I believe its relative dating.

Inga [223]3 years ago
6 0
The answer is relative dating, btw

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What is the pOH of 0.50 molar H3BO3?
Crazy boy [7]

<u>Answer:</u>

<em>A. 10.25</em>

<em></em>

<u>Explanation:</u>

Pkb =4.77

So pka = 14 - pka = 9.23

Ka =10^{-pka}

H_3 BO_3 (aq)+ H_2 O(l) H_2 BO_3^- (aq)+H_3 O^+ (aq)

Initial                0.50M                                 0                                 0

Change                  -x                                 +x                               +x

Equilibrium    0.50M-x                               +x                               +x

Ka =\frac {((x)(x))}{(0.50M-x)}

5.88\times10^{-10}= \frac {x^2}{(0.50M-x)}

(-x is neglected) so we get

5.88\times10^{-10}\times0.50=x^2\\\\x^2=2.94\times10^{-10}

x=\sqrt{x^2}=1.72\times10^{-5} M=H^3 O^{+}

pH=-log[H^3 O^+]\\\\pH=-log[1.72\times10^{-5}]\\\\pH=4.76

pOH = 14 - pH

= 14 - 4.76

pOH = 9.24 is the answer

Option A - 10.25 is the answer which is close to 9.24

4 0
2 years ago
A solid sample of a compound and a liquid sample of the same compound are each tested for electrical conductivity. Which test co
BigorU [14]

Answer:

i have no idea

but its b

Explanation:

3 0
3 years ago
Read 2 more answers
If you burn 46.0 g of hydrogen and produce 411 g of water, how much oxygen reacted?
g100num [7]
The answer is 365 grams because you need to subtract 411 by 46.
3 0
3 years ago
What are atoms in chemistry?​
kobusy [5.1K]

Answer:

Smallest living thing

Explanation:

3 0
2 years ago
Read 2 more answers
Calculate the mass of 29.8 mL of aluminum, which has a density of 2.00 g/mL.
MaRussiya [10]

Answer:

The answer is

<h2>59.6 g </h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

Density of aluminum = 2.00 g/mL

volume = 29.8 mL

The mass is

mass = 2 × 29.8

We have the final answer as

<h3>59.6 g</h3>

Hope this helps you

5 0
2 years ago
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