Answer:

Chemistry

2 answers:

scoray [572]3 years ago

6 0

Answer:

b. 2 g/mL

Explanation:

Density=mass/volume.

so: D=10g/5mL

Density=2g/mL

Leni [432]3 years ago

4 0

Answer:

The correct answer is option b.

Explanation:

To calculate density of a substance, we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$

We are given:

Mass of an object = 10 g

Volume of an object = 5 mL

Density of an object = d

Putting values in above equation, we get:

$d=\frac{10 g}{5 mL}=2 g/mL$

2 g/mL is the density of an object that has a mass of 10 g and a volume of 5 mL.

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Heat Transfer Lab

scoray [572]

Heat Transfer Lab

The following represents a lab set up for heat transfer. The cup on the left started with boiling water at 100 degrees C and the cup on the right has water at 20 degrees C. There is an aluminum bar between the two cups allowing heat to transfer from one cup into the other. The set up will be left alone for 20 minutes and temperatures of each cup of water will be recorded every minute for 20 minutes.

mag-aral ka

5 0

2 years ago

When a saturated solution of NH4Br dissolved in 100 grams of water is cooled from 60°C to 30°C, how much NH4Br will precipitate?

stepladder [879]

Answer:

$m_{precipitated}=24.8g$

Explanation:

Hello,

In this case, since at 60 °C, 108 grams of ammonium bromide are completely dissolved in 100 grams of water for a saturated solution, once it is cooled to 30 °C, wherein only 83.2 grams are completely dissolved in 100 grams of water, the following mass will precipitate:

$m_{precipitated}=108g-83.2g\\\\m_{precipitated}=24.8g$