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Natalka [10]
2 years ago
13

The bobsled is an event in the winter Olympics. In this event, each sled and its riders speed down an icy track. Which factor(s)

affect how much kinetic energy the sled and its team have when the sled crosses the finish line?
A mass only
B speed and time
C speed and mass
D speed, mass, and time
Chemistry
2 answers:
tresset_1 [31]2 years ago
8 0
Answer: B (speed and mass)
goldenfox [79]2 years ago
3 0

Answer:

Speed and Mass

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As you travel from a solid to a gas, energy is being absorbed or given off?
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The chemical equation for the formation of ammonia is unbalanced. 3H2(g) + N2(g) -----> NH3(g) If three molecules of hydrogen
mestny [16]

Answer: 2 molecules of ammonia

Explanation:

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8 0
3 years ago
Read 2 more answers
It takes 11.2 kj of energy to raise the temperature of 145 g of benzene from 22.0°c to 67.0°c. what is the specific heat of benz
Cloud [144]
We can use the heat equation,
Q = mcΔT 

where Q is the amount of energy transferred (J), m is the mass of the substance (kg), c is the specific heat (J g⁻¹ °C⁻¹) and ΔT is the temperature difference (°C).
Q = 11.2 kJ = 11200 J
m = <span>145 g
</span>c = ?
ΔT = (67 - 22) °C = 45 °C
By applying the formula,
11200 J = 145 g x c x 45 °C
           c = 1.72 J g⁻¹ °C⁻¹

Hence, specific heat of benzene is 1.72 J g⁻¹ °C⁻¹.
7 0
3 years ago
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