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1 year ago

9

A balance and a graduated cylinder are used to determine the density of a mineral sample. The sample has a mass of 16 g and a vo

lume of 2 cm3. What is the density of the mineral sample?

1 answer:

Ludmilka [50]1 year ago

6 0

Answer:

8g/cm³

Explanation:

density is mass per unit volume , it is measured in grams per unit volume

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A gas absorbs 10J of heat and is simulataneously comptessed by a constant external pressure of 0.5atm from 4L to2L in volume.Wha

Ne4ueva [31]

Answer:

B. 111 J

Explanation:

The change in internal energy is the sum of the heat absorbed and the work done on the system:

ΔU = Q + W

At constant pressure, work is:

W = P ΔV

Given:

P = 0.5 atm = 50662.5 Pa

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Plugging in:

W = (50662.5 Pa) (0.002 m³)

W = 101.325 J

Therefore:

ΔU = 10 J + 101.325 J

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3 years ago

How many grams of carbonic acid were produced by the 3.00 g sample of NaHCO

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