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3 years ago

What is needed for work to be done?

Chemistry

2 answers:

Shalnov [3]3 years ago

6 0

Answer: A force must cause an object to move along the same direction as the force.

Explanation:

Work is defined as displacement in the position of an object due to action of force. Mathematically the work done is a product of force and displacement of an object. The direction of the force applied and direction in which object is displaced is always same.

$Work=Force\times Displacement$

When work is done,a force must cause an object to move along the same direction as the force.

andrey2020 [161]3 years ago

3 0

For work to be done, a force must cause an object to move along the same direction as the force.
Hope this helps|!

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What is the mass in grams of 9.45*10^24 molecules of methanol (CH3OH)?

Angelina_Jolie [31]

Number of moles:

1 mole ---------- 6.02x10²³ molecules
? moles --------- 9.45x10²⁴ molecules

1 x ( 9.45x10²⁴) / 6.02x10²³ =

9.45x10²⁴ / 6.02x10²³ => 15.69 moles of CH3OH

Therefore:

Molar mass CH3OH = 32.04 g/mol

1 mole ------------ 32.04 g
15.69 moles ----- mass methanol

Mass methanol = 15.69 x 32.04 / 1 => 502.7076 g

6 0

3 years ago

The m equivalent of 758,422,344 cm equals (to 3 sf)

denis23 [38]

1) convert cm to m

$= 758,422,344\ cm\ x\ \frac{1\ m}{100\ cm} \\= 7,584,223.44\ m$

2) sig figs

When making a bigger number smaller, the exponent will be a positive number.

The answer will be $7.58$ × $10^{6}$ meters after rounding

8 0

3 years ago

Help me please will give points

Grace [21]

Muddy water is a mixture. chex mix is mixture

4 0

3 years ago

The placement of the double bond goes between which two atoms in this formaldehyde molecule? Note: Hydrogen, carbon, and oxygen

ludmilkaskok [199]

Its between the two hydrogen atoms (C) i hope i helped you guys out a bit.!

6 0

4 years ago

Read 2 more answers

Explain which of the following are correct statements of the Second Law of Thermodynamics and which are not. a. All reversible h

Ivan

Answer:

a. False

b. False

c. True

d. False

Explanation:

The Second Law of Thermodynamics (2LT) has two principal states, one about the heat engines, and other about the entropy.

Heat engines are machines that work by converting heat at work. According to the 2LT, a machine like that can't convert all of the heat in work, some of it must be lost by the surroundings.

Thus, those machines, which is cyclic, can't have an efficiency of 100%, but, depending on the temperature, and the fluid used, it will vary, so, the letter "a" is false.

The engine must be connected to a hot heat reservoir, which will be a high temperature and will warm up the fluid, and to a cold heat reservoir, which will a low temperature and will be the deposit of the heat loss. So, the letter "b" is incorrect, and the letter "c" is correct.

According to the other statement of the 2LT, the entropy, a measure of the randomness, intends to increase in all of the systems, including the universe. So, as more unorganized is a system, as large as the entropy. So, the letter "d" is incorrect.

3 0

3 years ago