A force of 12.5 N is appiled to 10 kg mass

Answers

Answer 1

Answer: To find the acceleration, use the formula: force= mass x acceleration.12.5 N = 10 x AccelerationAcceleration = 12.5 / 10Acceleration = 1.25Hope this helps :)

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Given the following reaction: 2 OF2 + 2 S → SO2 + SF4 + 319.5 kJ Is this endothermic or exothermic? Draw the energy pathway:
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To safely observe the odor of a chemical in a test tube you should?

Answers

Answer:

Waft

Explanation:

You should waft you hand from the tube to your face you should never smell directly or it could harm you hope this helped :)

Whenever dealing with any chemicals it is important to wear safety googles, gloves, safe cloths, and especially a safety mask. You never know how bad can the chemicals harm your body, so its important for you to not inhale them or even get contact with any part of your body. The most safely way to observe the odor of a chemical in a test tube, you should always were safety gears.

Hope this Helps!

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Why don't the oceans simply reabsorb the water that evaporates?

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The water evaporates into the clouds

because the oceans already have a ton of water in them so they don't really need to absorb the water again that evaporates

During natural selection, which organisms are most likely to survive as the environment changes?

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Are there any choices to your question? If so what are they? Then I can answer. :)

Suppose the plates beneath Earth's surface stopped moving.What do you think would happen?Explain your answer.

Answers

There would be no more earthquakes or volcanic eruptions as the earth's plate are the cause of both these occurrences.(which can be seen as a positive)
However, the plates allow the earth to cool when they move because they cause heat loss.If the plates were to stop moving the earth would have to loose heat another way and since we cant tell how this would happen, it could be very dangerous.

How many moles of sf6 are there in 459500000000000000 molecules of sf6

Answers

Answer : The number of moles of $SF_6$ is, $7.63* 10^(-7)$ moles.

Solution :

As we know that,

1 mole contains $6.022* 10^(23)$ number of molecules

As, $6.022* 10^(23)$ number of molecules of $SF_6$ are present in 1 mole of $SF_6$

So, $4595* 10^(14)$ number of molecules of $SF_6$ are present in $(4595* 10^(14))/(6.022* 10^(23))=7.63* 10^(-7)$ moles of $SF_6$

Therefore, the number of moles of $SF_6$ is, $7.63* 10^(-7)$ moles.

When Kay added 30 g of hydrochloric acid (HCl) to 65 g of Zn, bubbles appeared and a white precipitate, zinc chloride (ZnCl2) was produced. She found that the mass of the zinc chloride was 93 g. Since the Law of Conservation of Matter stated that matter can't be created or destroyed, she was puzzled about the difference in mass. What is the best explanation for the missing 2 g?A) 2 g of zinc disappeared.
B) 2 g of hydrogen gas were produced.
C) Kay didn't correctly mass the precipitate.
D) Kay didn't collect all of the precipitate.

Answers

Answer: B) 2 g of hydrogen gas were produced.

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

$Zn(s)+2HCl(aq)\rightarrow ZnCl_2(s)+H_2(g)$