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lbvjy [14]
3 years ago
11

Can someone help me please I’m giving the brainliest

Chemistry
1 answer:
Len [333]3 years ago
3 0
1.more
2.longer
3.warmer
4.northern
5.less
6.shorter
7.colder
8.southern
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What is the best example of an experimental scientific investigation?
ivolga24 [154]

Scientific investigation: The process in which scientist solve the question by using different systematic approach. It can be initiated in different ways.

Experimental Scientific investigation: The investigation in which scientist answer the question on the basis of experimental results. Experimental investigation includes both dependent and independent variables, and only one variable is tested at a time is possible.

The best example of an experimental scientific investigation is: when we placed a whole apple and apple slice under sun, and noted down how many days it will take to  rot in order to compare the break down of apple slice and whole apple.

Thus, option (B) is the correct answer.

7 0
3 years ago
What is the oxidation number of sulfur in H2SO3?<br> a. +3<br> b. +1<br> c. +2<br> d. +4
Alla [95]
We need to keep in mind that the compound is neutral.

H2SO3
2(+1)+S+3(-2)=0 (since its neutral)
2+S-6=0
S-4=0
S=4

Therefore the oxidation number for sulfur is +4.
3 0
3 years ago
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Which of the following [H+] values describes the most basic (alkaline) solution?
Aleks04 [339]
The H+ concentration that would best describe a basic solution would be the one having values less than 10^-7. The pH of a solution is related to H+ concentration by pH = -log[H+]. Therefore, as the concentration of H+ decreases the alkalinity would rise. 
4 0
3 years ago
Roberto and his dad drove from town A to town B taking the long way, ate lunch and then came back using a
alina1380 [7]

Answer:c which is 70

Explanation:

i took the test and got it right

3 0
3 years ago
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1. How many molecules are found in 13.7 moles of CuNO3? <br><br> Please explain step by step
Gennadij [26K]

Answer:

1 moles

Explanation:

The answer is 0.0011897028836018. We assume you are converting between moles CuNo3 and gram. You can view more details on each measurement unit: molecular weight of CuNo3 or grams The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles CuNo3, or 840.546 grams.

7 0
3 years ago
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