CHEMISTRY HIGH SCHOOL

Most tornadoes carry wind speeds that range fromA. 1 to 105 km per hour.
B. 267 to 322 km per hour.
C. 105 to 177 km per hour.
D. 178 to 266 km per hour.

Answers

Answer 1
Answer: In the categorization of tornadoes, most tornadoes (87%) are no stronger than EF1 unless 'most' is considered 55% in which case the answer is EF0. 
EF0 - 65 to 85 mph {104.61 to 136.79 km/h}EF1 - 86 to 110 mph {138.40 km/h to 177 km/h}
Hence the answer would have to be C

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A 7.0 liter balloon at room temperature contains helium gas. if the temperature is halved, what happen to the volume?​

Answers

The volume = 6.71 L

Further explanation

Charles's Law  

When the gas pressure is kept constant, the gas volume is proportional to the temperature  

\tt (V_1)/(T_1)=(V_2)/(T_2)

V₁=7 L

T₁=25 °C(room temperature) + 273 = 298 K

T₂=12.5(halved) + 273 = 285.5 K

\tt (V_1)/(T_1)=(V_2)/(T_2)\n\n(7)/(298)=(V_2)/(285.5)\n\nV_2=6.71~L

0.0034ks= what in cs

Answers