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2 years ago

5

A student travels in a car from Philadelphia for 12 hours before they reach their destination in Chicago. They measured the dist

ance they traveled as 1221 km. What was their average speed?
HELP ME PLEASE !!

1 answer:

Hitman42 [59]2 years ago

7 0

Answer:

101.75 km/hr

Explanation:

average speed is the distance traveled ÷ time traveled

= 1221 ÷12 = 101.75 km/hr

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Match the term with its correct charge. Positive charge. Negative charge. Neutral: No electric charge. A. electron B. neutron C.

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3 years ago

You crumple a piece of paper in your hands. Not all of the kinetic energy from your hands is used to crumple the paper. Where do

Shkiper50 [21]

Answer:

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2 years ago

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2 years ago

What mass of HBO2 is produced from the<br> combustion of 139.5 g of B2H6?<br> Answer in units of g.

aliina [53]

Answer:

$m_{HBO_2}=441.8gHBO_2$

Explanation:

Hello there!

In this case, since the combustion of B2H6 is:

$B_2H_6+3O_2\rightarrow 2HBO_2+2H_2O$

Thus, since there is 1:2 mole ratio between the reactant and product, the produced grams of the latter is:

$m_{HBO_2}=139.5gB_2H_6*\frac{1molB_2H_6}{27.67gB_2H_6} *\frac{2molHBO_2}{1molB_2H_6} *\frac{43.82gHBO_2}{1molHBO_2}$

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Best regards!

5 0

2 years ago

Pls someone help me out

SpyIntel [72]

Do you still need help

4 0

2 years ago