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ddd [48]
3 years ago
9

The main reason that scientists would do a descriptive investigation is that _____. A. they don't like doing normal experiments

B. they can't make observations about their topic C. they're trying to make a significant new scientific discovery D. they're studying something for which they can't do an experiment
Chemistry
2 answers:
andre [41]3 years ago
8 0

Answer:

d) They're studying something for which they cant do an experiment

Explanation:

goblinko [34]3 years ago
8 0

Answer:

The correct answer is C. they're trying to make a significant new scientific discovery

Explanation:

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Which of these pairs of elements have the same number of valence electrons?
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The same number of valence electrons exists in the same family of elements in the periodic table. In finding the answer to this problem, we just have to find the pair that belongs to the same family in the periodic table. The same family means same column. Among these, Oxygen and lead (Pb) are in the same family. This pair is the answer.
7 0
3 years ago
Which of these elements is this group?
sergey [27]

Answer:

Strontium

Explanation:

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Group 2 elements include the following: Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), barium (Ba), and radium (Ra). Based on the descriptive information in this question, the element being described is a GROUP 2 element. Based on the elements in the option, only STRONTIUM (Sr) is a group 2 element.

3 0
2 years ago
According to the equation, 2 H2 + O2 --> 2 H20, how many moles of oxygen are required to convert 12 moles of hydrogen to wate
DerKrebs [107]

Answer:

6 moles of oxygen, or 3O2.

Explanation:

I would build a proportion for this:

\frac{2(2)}{2}  =  \frac{12}{x}  \\ 4x = 24 \\ x = 6

5 0
3 years ago
For 13 points plz. Plz
Ludmilka [50]

Answer:

Individual versus nature

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The type of conflict is <em>individual</em><em> </em><em>versus</em><em> </em><em>nature</em><em> </em>because the cat faced many problems in nature such as facing the mouse, grass, people, etc. These are all considered as nature

<em>PLEASE DO</em><em> </em><em>MARK ME</em><em> </em><em>AS BRAINLIEST</em><em> </em><em>IF</em><em> </em><em>MY ANSWER</em><em> </em><em>IS HELPFUL</em><em> </em><em>;</em><em>)</em><em> </em>

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3 years ago
HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Iteru [2.4K]

Answer: The answer is Land heats up and cools down faster than water. I hope this helps! Have a wonderful day(:

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3 years ago
Read 2 more answers
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