3 years ago

Which of the following describes a perpetual-motion machine?

Chemistry

2 answers:

makkiz [27]3 years ago

5 0

Answer:

a motor that requires no energy input once it is running

Mashutka [201]3 years ago

4 0

Answer:

Explanation:

a p e x :)

You might be interested in

Which of the following is an example of a

Sergio039 [100]

Answer:

dissolving sugar into water is a physical change

5 0

2 years ago

An ethylene gas torch requires 300 L of gas at 0.8 atm. What will be the pressure of the gas if ethylene is supplied by a 200.0

Vlad [161]

Answer:

1.2 atm

Explanation:

Given data

Volume of the gas in the tank (V₁): 200.0 L

Pressure of ethylene gas in the tank (P₁): ?

Volume of the gas in the torch (V₂): 300 L

Pressure of the gas in the torch (P₂): 0.8 atm

If we consider ethylene gas to be an ideal gas, we can find the pressure of ethylene gas in the tank using Boyle's law.

$P_1 \times V_1 = P_2 \times V_2\\P_1 = \frac{P_2 \times V_2}{V_1} = \frac{0.8atm \times 300L}{200.0L} = 1.2 atm$

3 0

3 years ago

True or false all countries are legally bound to survey and monitor for disease within their bodies

ra1l [238]

Answer:

False..........

7 0

3 years ago

Which of the following molecules/ions has a pyramid shape?

andreev551 [17]

i think its a right tringle

3 0

3 years ago

What is the mole to mole relationship between copper and zinc? Cu2+(aq)+->Cu(s)+Zn2+(aq)

Aliun [14]

The reaction is missing the Zn(s) in the reactants. The stoichiometry of the copper/zinc is 1 mole to 1 mole

5 0

4 years ago