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Nataly [62]
3 years ago
7

If your front yard is 16.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates 1250 new snowflakes every minu

te, how much snow (in kilograms) accumulates on your lawn per hour? Assume an average snowflake has a mass of 2.00 mg.
Chemistry
1 answer:
Free_Kalibri [48]3 years ago
3 0
I think the answer is 3x-x+2=4
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5.0g of aluminum fluoride decomposes into aluminum and oxygen. What mass of oxygen is formed?
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Answer:

5

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Explain how chemical change differs from a physical change
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8 0
3 years ago
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A patient needs 0.024 g of a sulfa drug. There are 12-mg tablets in stock. How many tablets should be given?
emmainna [20.7K]
I would personally convert the 12 mg to g so I could see what I was working with. So 12 mg to grams is 0.012 g...

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3 years ago
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Describe the shapes and relative energies of the s,p,d, and f atomic orbitals?
Mariulka [41]

Relative energies are in the order:

s < p < d < f

And the shape of these orbitals are

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The mass of water in a single popcorn kernel was found to be 0.905 grams after it popped at a temperature of 175 °C. Using the i
Rus_ich [418]

Answer:

0.583 kilojoules

Explanation:

The amount of heat required to pop a single kernel can be calculated using the formula as follows:

Q = m × c × ∆T

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Q = amount of heat (J)

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c = specific heat capacity of water (4.184 J/g°C)

∆T = change in temperature

From the given information, m = 0.905 g, initial temperature (room temperature) = 21°C , final temperature = 175°C, Q = ?

Q = m × c × ∆T

Q = 0.905 × 4.184 × (175°C - 21°C)

Q = 3.786 × 154

Q = 583.044 Joules

In kilojoules i.e. we divide by 1000, the amount of heat is:

= 583.04/1000

= 0.583 kilojoules

8 0
3 years ago
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