3 years ago

Please help!

Chemistry

1 answer:

ASHA 777 [7]3 years ago

5 0

The pitch of a cell phone ring decreases when the wavelength of a sound wave increases. :)

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After reading the list of physical properties above, you realize that they are describing a substance that is a

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The answer is B

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3 years ago

Which statement is true about magnetic poles

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A. all magnets have two poles

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4 years ago

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What is the volume of an object that has a mass of 3.5 grams and has a density of 2.50 g/mL? Include units and proper sig figs l

jolli1 [7]

1.4mL

Explanation:

Given parameters:

Mass of object = 3.5g

density = 2.5g/mL

Unknown:

Volume of the object = ?

Solution:

Density is the mass per unit volume of a body. It is an intensive property that is the same for the same substances.

Density = $\frac{mass}{volume}$

since the volume is unknown; we make it the subject of the formula;

Volume = $\frac{mass}{density}$

Volume = $\frac{3.5}{2.5}$

Volume of the object = 1.4mL

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3 years ago

Given this reaction, N2O4(g) 2NO2(g), what shifts will occur if Q = K?

MAXImum [283]

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It shifts to the left

Explanation:

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3 years ago

Lucas rubs a plastic ruler on his sweater. He waves the ruler above a pile of shredded paper and notices that the pieces of pape

telo118 [61]

Answer:

Explanation:

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When the glass ruler is rubbed over the woolen sweater, the wool gets positively charged and the ruler gains electron to form negative charge.

Now if this charged is not earthed, the negative charged ruler attracts the uncharged bits of paper, as a result of which the paper gets attached to the ruler.

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3 years ago