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4vir4ik [10]
2 years ago
10

If two forces are heading in the same direction, we ______ them to calculate net force.

Chemistry
1 answer:
steposvetlana [31]2 years ago
5 0

Answer:

add

Explanation:

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How have safety concerns about chemicals changed over time?
Alex787 [66]

Answer:

C. As scientists have learned more about chemicals, they have  become more aware of their dangers

Explanation:

Chemicals are substances with standard compositions, held together by chemical bonds. Chemicals can exist in different phases such as solid, liquid, and gaseous phases. Over time, with a growing understanding of chemicals, their composition, and their reaction methods, scientists now have a better knowledge of the dangers chemicals can pose. To that effect, they have created standard safety measures for those who have to work with these chemicals.

When these guidelines are strictly adhered to, the chances of suffering accidents, burns, and explosions with these chemicals are significantly reduced.

8 0
3 years ago
¿Cuántos moles de C3H8 contienen 9.25 x 10^24 moléculas?
Igoryamba

Answer:

\large \boxed{\text{e. 15.4 mol C$_{3}$H}_{8}}

Explanation:\text{Moles of propane} = 9.25 \times 10^{24}\text{ molecules} \times \dfrac{\text{1 mol }}{6.022 \times\ 10^{23} \text{molecules}} = \textbf{15.4 mol}

5 0
3 years ago
PLEASE ANSWER aisksiwjjskssjjssjsjsjsjsj
Gnesinka [82]

Answer:

The answer will be A

Explanation:

I will send a photo with it

4 0
2 years ago
Which of these changes occurs during a nuclear change?
Andrews [41]
The correct answer is D. Elements are created that differ from the reactants.. Because in a eeaction, the product is different than the reactants. Take NaCl for example.
7 0
2 years ago
One isotope of a metallic element has the mass number 67 and 37 neutrons in the nucleus. The cation derived from the isotope has
Anuta_ua [19.1K]
No. Of protons = mass no. - no. Of neutrons
No. Of protons = 67 - 37
= 30
No. Of electrons = 28

Zinc will have 30 protons and 28 electrons. So, it will have +2 charge

Symbol - Zn^+2
6 0
3 years ago
Read 2 more answers
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