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GuDViN [60]
3 years ago
6

Screw has very high efficiency. a. True b. False

Chemistry
2 answers:
gavmur [86]3 years ago
7 0

False, because I said so.

NISA [10]3 years ago
5 0
False the output force and input force is low because the formula is output force divided by input force. Just a note you are not doing much input force into the screw because you hold the screwdriver
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19. When 0.5g of calcium trioxocarbonate (IV) was added to excess dilute
Flauer [41]

Answer:

0.1gmin-1

Explanation:

mass = 0.5g

time = 5minutes

rate= mass/time = 0.1gmin-1

7 0
2 years ago
Explain the importance of concentration as it pertains to a solution
julia-pushkina [17]
There it is, I hope it gets to be helpful

5 0
3 years ago
Consider the following system at equilibrium where \Delta H° = 18.8 kJ, and Kc = 9.52×10-2, at 350 K.
slega [8]

Answer:

1. C. remains the same.  2. C. is less than Kc.  3. B. run in the reverse direction to reestablish equilibrium. 4. A. increase.

Explanation:

At constant temperature, the equilibrium concentration has not effect on the equilibrium constant because the rate constants do not change with change in the concentrations or amounts of the reactants or products. Change in the concentration of one reactant or product causes the concentration of the others to change so as to maintain a constant value for the equilibrium constant. On the other hand, the reaction quotient is used to measure the relative amounts of reactants and products during a chemical reaction at any point in time. The value of the reaction quotient shows the direction of the chemical reaction.

Therefore, when 0.31 moles of CCl4(g) are removed from the equilibrium system at constant temperature:

1. the value of Kc remains the same

2. the value of Qc  is less than Kc

3.  the reaction must run in the reverse direction to reestablish equilibrium

4.  the concentration of CH_{4} will increase because product will be converted to reactants to reestablish equilibrium.

7 0
3 years ago
Regions that receive up to 20 inches of rainfall per year are referred to as __________ because they receive more precipitation
UNO [17]

Answer:

semiarid deserts

Explanation:

8 0
3 years ago
Why is it difficult to determine earth's inner structure
Lesechka [4]
It is hard because we can't get past the crust, Our machines will burn up at the mantle and so will we. The layers go: crust, mantle, outer core, inner core.
5 0
3 years ago
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