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AlekseyPX
3 years ago
14

What describes using organisms that were only alive during a specific time period to estimate the unknown age of items

Chemistry
2 answers:
djyliett [7]3 years ago
7 0
Law of superposition
patriot [66]3 years ago
4 0

Answer:

c i just took the test

Explanation:

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Find the mass of 1.112 moles HF?
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Answer:

22.25 g

Explanation:

To find the mass, you need to convert moles to grams and get 22.25 g.

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3 years ago
21 Which process is used to determine the concentration of an acid?
Inessa05 [86]

Answer:

4) Titration

Explanation:

Titration is a common process used to determine the concentration of acids. It does this by adding a solution of base with a known concentration to the acid until it reaches neutralization.

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3 years ago
When atoms combine, the force of attraction that holds them together is a(
ziro4ka [17]
Electrostatic, meaning the attraction from one's positive nucleus is to the negative electrons of the other atom and vis versa.
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3 years ago
POINTS AND BRAINIEST ANSWER!!!!
denis23 [38]

Answer:

hydrgen = i think it is 4

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3 0
3 years ago
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How many milliliters of a 0.40%(w/v) solution of nalorphine must be injected to obtain a dose of 1.5 mg?
ozzi
The number  of Ml  of  a  0.40 %w/v solution  of   ,nalorphine  that must  be injected  to  obtain  a  dose  of 1.5 mg is  calculated as  below


since M/v%   is  mass  of solute  in  grams per 100  ml

convert Mg to  g
1 g = 1000 mg  what  about  1.5 mg =?  grams
=   1.5 /1000 = 0.0015 grams


volume is therefore =  100 (  mass/ M/v%)

= 100  x(  0.0015/ 0.4) =  0.375  ML
6 0
3 years ago
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