CHEMISTRY MIDDLE SCHOOL

If a handsaw does the same amount of work on a log as a chainsaw does, which has more power why?

Answers

Answer 1
Answer: I think a chainsaw has more power because the handsaw has to have more strength to get more done unlike the chainsaw, which already has power so it's easier. Hope it helped!

Related Questions

What effect does observing a substance's physical properties have on the substance?
How does meiosis I differ from meiosis II
What properties do scientists use to identify minerals
which industrial city would have fewer air pollution incidents related to temperature inversions one on the great plains or one near the rocky mountains
1. A scientific hypothesis can become a theory if ______.A) the entire community accepts itB) the hypothesis is tested extensively and competing hypothesis are eliminatedC) there are no other competing hypothesisD) the hypothesis can be tested at least once2) A preliminary untested explanation that tries to explain how or why things happen in the manner observed is a scientific ________.A) lawB) theoryC) factD) hypothesis

(5 points) In the lab you find four bags; each contains 5.00 g of a different gas at STP. The gases are O2, C2H6, CO2, and Ne. Which bag has the largest volume?

Answers

Answer:

Ne

Explanation:

Step 1:

Data obtained from the question. This includes:

Mass of O2 = 5g

Mass of C2H6 = 5g

Mass of CO2 = 5g

Mass of Ne = 5g

Step 2:

Determination of the number of mole of each gas:

For O2:

Mass of O2 = 5g

Molar Mass of O2 = 16x2 = 32g/mol

Number of mole of O2 =?

Number of mole = Mass/Molar Mass

Number of mole of O2 = 5/32

Number of mole of O2 = 0.156 mole

For C2H6:

Mass of C2H6 = 5g

Molar Mass of C2H6 = (12x2) + (6x1) = 24 + 6 = 30g/mol

Number of mole of C2H6 =?

Number of mole = Mass/Molar Mass

Number of mole of C2H6 = 5/30

Number of mole of C2H6 = 0.167 mole

For CO2:

Mass of CO2 = 5g

Molar Mass of CO2 = 12 + 16x2 = 12 + 32 = 44g/mol

Number of mole of CO2 =?

Number of mole = Mass/Molar Mass

Number of mole of CO2 = 5/44

Number of mole of CO2 = 0.114 mole

For Ne:

Mass of Ne = 5g

Molar Mass of Ne = 20g/mol

Number of mole of Ne =?

Number of mole = Mass/Molar Mass

Number of mole of Ne = 5/20

Number of mole of Ne = 0.25 mole

Step 3:

Determination of the volume occupied by the each gas.

1 mole of a gas occupy 22.4L at stp.

For O2:

0.156 mole will occupy = 0.156 x 22.4 = 3.49 L

For C2H6:

0.167 mole Will occupy = 0.167 x 22.4 = 3.74 L

For CO2:

0.114 mole Will occupy = 0.114 x 22.4 = 2.55 L

For Ne:

0.25 mole will occupy = 0.25 x 22.4 = 5.6 L

From the calculations made above, Ne has the largest volume

What is the Name of RbC2H3O2

Answers

Answer:

Rubidium Acetate

Explanation:

Rb is Rubidium C2H3O2 is acetate

Answer:

Rubidium Acetate-

Hope this helps ^-^* Sorry if I'm wrong.

Explanation:

15. Frog lungs are poorly developed. How does this relate to their skin being thin and moist?

Answers

The answer is that they havent reached their full form yet.
Frog's lungs are inside their body (I believe), but their skin has nothing to do with their lungs so their skin can be thin and moist but their inside might be a whole other story ^_^

A student in science class observes a cell under the microscope and sees an organelle that only appears in plant cells. What is the organelle?

Answers

The organelle is the chloroplast. While plant cells will also have a cell wall, the cell wall is not considered an organelle.

What is the empirical formula of sulphur dioxide which contains 50% by mass of sulphur​

Answers

Answer:

Empirical formula is SO2.

Explanation:

So the fraction of Sulphur is 0.50 and the fraction of  oxygen is 0.50.

Dividing by the atomic masses of sulphur and oxygen:

S = .50 / 32 = 0.015625

O = .50 / 16 = 0.3125

Ratio of S: O =     0.015625/ 0.015625 to 0.3125/ 0.015625    

= 1:2.

Answer:

Question what are you doing the same thing you guys have a good time

Explanation:

is this the same question why did they do that and how much they do it

The muscles of the body are part of the musculoskeletal system but would not operate without the _______ system providing the impulses that cause the muscles to act. A. respiratory B. cardiovascular C. nervous D. reproductive

Answers

The muscles of the body are part of the musculoskeletal system but would not operate without the nervous system providing the impulses that cause the muscles to act. Correct answer: C The nervous system controls all activities within the human body, including the muscles. It sends messages between the brain and the muscles very quickly using nerve impulses (action potentials).

Nervous is the system that provides impulse
Other Questions
Why is it important for the pH of blood to remain constant?
What is the definition of moral mass
How does ur body maintain constant tempature on a hot day?
100 g of radioactive mass has a half lifeof 5 days Calculate the mass decayedoff after 15 days​