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Finger [1]
3 years ago
10

A screw decreases the amount of work done. True False

Chemistry
2 answers:
victus00 [196]3 years ago
4 0

Answer:

tru

Explanation:

Bezzdna [24]3 years ago
3 0
It would probably be False
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Calculate the volume of compound Y needed to make a 350 pg/ml treatment solution in 2 ml of 1x PBS using a stock solution contai
harina [27]

Answer:

14 mL

Explanation:

To prepare a solution by a concentrated solution, we must use the equation:

C1xV1 = C2xV2, where <em>C</em> is the concentration, <em>V</em> is the volume, 1 is the initial solution and 2 the final solution.

The final solution must have 2 mL and a concentration of 350 pg/mL, and the initial solution has a concentration of 50 pg/mL.

Then:

50xV1 = 350x2

50xV1 = 700

V1 = 700/50

V1 = 14 mL

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A baseball player hits a ball. Which is the best description of the energy of the ball as it flies over the pitcher’s head?
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The right option is; b. mechanical

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Mechanical energy is the energy that an object acquires due to its position or due to its motion. From the question, the baseball player has chemical potential energy (stored as food) which is transformed into work. As the baseball player hits the ball, there is energy exchange in which the ball acquires energy to perform its work. The energy obtained by the ball upon which work is done is called mechanical energy.


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3 years ago
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A soft drink contains 46 g of sugar(sucrose C12H22O11) how many sugar molecules are present?
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Atoms are rearranged.

Explanation:

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