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Snezhnost [94]
3 years ago
5

When you use a simple machine to do work, ________.

Chemistry
2 answers:
cricket20 [7]3 years ago
6 0

Answer:

distance decreases and force increases

Explanation:

  • Simple machine means less power
  • Hence it will require more force.
  • Hence distance will decrease with respect to force and force will decrease
Neporo4naja [7]3 years ago
3 0

Answer:

<h2>B. distance increases and force decrease </h2>

Explanation:

<h3>by changing the direction of applied force, or by multiplying force of speed of the energy applied.</h3>
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PV = nRT. If P = 1 atm, V = 5.0 liter, R = 0.0821 L.atm/mol.K, and T = 293 K; what is the value of n?
Leya [2.2K]

Answer:

n = 0.207 mole

Explanation:

We have,

P = 1 atm

V = 5 liter

R = 0.0821 L.atm/mol.K

T = 293 K

We need to find the value of n. The relation is as follows :

PV = nRT

Solving for n,

n=\dfrac{PV}{RT}\\\\n=\dfrac{1\times 5}{0.0821 \times 293}\\\\n=0.207\ \text{mol}

So, the value of n is 0.207 mol.

6 0
3 years ago
The fuel used to power the booster rockets on space shuttles is a mixture of aluminum metal and ammonium perchlorate. the follow
Charra [1.4K]

The moles of water that are produced from 373 moles of ammonia present in any chemical reaction is 746 moles.

<h3>What is the stoichiometry?</h3>

Stoichiometry of the reaction gives idea about the amount of entities present in any chemical reaction before and after the reaction.

Given chemical reaction is:

3Al + 3NH₄ClO₄ → Al₂O₃ + AlCl₃ + 3NO + 6H₂O

From the stoichiometry of the reaction it is clear that:

3 moles of Al = produces 6 moles of H₂O

373 moles of Al = produces 6/3×373 = 746 moles of H₂O

Hence required moles of water is 746 moles.

To know more about stoichiometry, visit the below link:

brainly.com/question/21931988

                                                                                                                                                                                                                                                                                                                               

6 0
2 years ago
All of the following are properties of molecular compounds except
icang [17]

Answer: the answer is c.

Explanation:

i juss guessed and it was right?

5 0
3 years ago
What changes in space result from the death of massive stars?
lana [24]

Whenever the fuel is being used up, a star explodes and the energy leakage from a star's core ceases.

Explanation:

The dying star expands in the "Red Giant," before even the inevitable collapse starts, due to nuclear reactions just outside of the core.

It becomes a white dwarf star when the star has almost the same density as the Sun. If it's much larger, a supernova explosion could take place and leave a neutron star away. However, if it is very large–at least three times the Sun's mass–the crumbling core of the star, nothing will ever stop it from crumbling. The star is imploding into a black hole, an endless gravitational loop in space.

6 0
3 years ago
A 2.00L canister is charged with C3H8 and O2 to a total pressure of 1.50 atm at 0.0 degrees C The mole fraction of C3H8 in the c
tankabanditka [31]

Answer:

c

Explanation:

6 0
3 years ago
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