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klio [65]
3 years ago
6

What is the study of his matter and energy interact? A. Chemistry B. Physics C. Biology D. Planetary science

Chemistry
2 answers:
e-lub [12.9K]3 years ago
8 0

The answer is option (B) Physics

Step2247 [10]3 years ago
4 0

Answer:

B

Explanation:

Physics is the study of matter in relation to energy.

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How do I do this?<br> 100 points <br> Please help
harina [27]

Answer:

Explanation:

OK this is simple

i'll try to do the unanswered question

CaCl2

In the table

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5 0
3 years ago
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What properties of the elements did Mendeleev study?
masha68 [24]

Answer:

Petersburg, Russia), Russian chemist who developed the periodic classification of the elements. Mendeleev found that, when all the known chemical elements were arranged in order of increasing atomic weight, the resulting table displayed a recurring pattern, or periodicity, of properties within groups of elements.

Explanation:

Hope this helps!!!

3 0
3 years ago
determine the ph at the equivalence point for the titration of a 40.0 ml sample of 0.100 mhno2 by 0.200 mkoh . (the pka of nitro
timama [110]

pH at the equivalence point is 3.60

<h3>Define pH.</h3>

pH is a numerical indicator of how acidic or basic aqueous or other liquid solutions are. The phrase, which is frequently used in chemistry, biology, and agronomy, converts the hydrogen ion concentration, which typically ranges between 1 and 10^{14} gram-equivalents per liter, into numbers between 0 and 14. The hydrogen ion concentration in pure water, which has a pH of 7, is 10^7} gram-equivalents per liter, making it neutral (neither acidic nor alkaline). A solution with a pH below 7 is referred to as acidic, and one with a pH over 7 is referred to as basic, or alkaline.

given that,

HNO2 = 0.100M

KOH= 0.200M

pKa = 3.34

using formula,

pH = pKa + log (salt /acid)

     = 3.34 + log (0.200/0.100)

     = 3.34 + log 2

     = 3.34 + 0.30

     = 3.60

pH at the equivalence point is 3.60

Learn more about hydrogen ion concentration here:-

brainly.com/question/21931436

#SPJ4

8 0
1 year ago
According to the graph, how many mice will be born in week 5 if the trend continues? <br>​
dlinn [17]
Okay so the answer to this one is very simple 91
7 0
3 years ago
The scale factor of the dilation of segment HG is One-sixth. Point P is the center of dilation. Line segment H G is dilated to f
S_A_V [24]

Answer:

Answer is 3

Explanation:

:) just took the quiz

5 0
3 years ago
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