Table of Contents

## What is the density of the bar?

Use your ruler to measure the length, width, and height of the bar of soap. Multiply the width x length x height to find the volume of the bar of soap. Then use the double arm balance to find the mass of the bar of soap. Use the formula D=M/V to find the density of the bar of soap.

**How do you calculate mass from CM?**

Multiply the volume and density together. Keep track of the units as you do this, and you’ll see that you end up with units of mass (kilograms or grams). Example: We have a diamond with volume 5,000 cm3 and density 3.52 g/cm3. To find the diamond’s mass, multiply 5,000 cm3 x 3.52 g/cm3 = 17,600 grams.

### How do you calculate density?

The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre.

**How do you find the mass with density and volume?**

Divide the mass by the density of the substance to determine the volume (mass/density = volume). Remember to keep the units of measure consistent. For example, if the density is given in grams per cubic centimeter, then measure the mass in grams and give the volume in cubic centimeters.

#### What is the density of platinum?

21.45 g cm-3

Platinum is an element with atomic symbol Pt, atomic number 78, and atomic weight 195.09. Silvery, whitish-gray, malleable, ductile metal. Mp: 1772°C; bp: 2187°C. Density: 21.45 g cm-3 at room conditions (very dense).

**How do I find the volume?**

Whereas the basic formula for the area of a rectangular shape is length × width, the basic formula for volume is length × width × height.

## How do you calculate mass example?

The mass of an object can be calculated in a number of different ways:

- mass=density×volume (m=ρV). Density is a measure of mass per unit of volume, so the mass of an object can be determined by multiplying density by volume.
- mass=force÷acceleration (m=F/a).
- mass=weight÷gravitational acceleration (m=W/g).

**What is the formula of weight?**

It depends on the object’s mass and the acceleration due to gravity, which is 9.8 m/s2 on Earth. The formula for calculating weight is F = m × 9.8 m/s2, where F is the object’s weight in Newtons (N) and m is the object’s mass in kilograms. The Newton is the SI unit for weight, and 1 Newton equals 0.225 pounds.

### What is the formula for density of a gas?

A. Density of a gas at STP. The formula D= M/V is used at STP with M being equal to the molar mass and V being molar volume of a gas (22.4 liter/mole).

**What is the formula for volume?**

#### How do you find volume with only mass?

Calculate the volume of the substance by dividing the mass of the substance by the density (volume = mass/density).

**How do you find the mass of an object?**

One can consider the mass of an object as a measure of how much physical “stuff” makes up that object. mass=density×volume (m=ρV). Density is a measure of mass per unit of volume, so the mass of an object can be determined by multiplying density by volume. mass=force÷acceleration (m=F/a).