4,5 grams
This is (mass of solute) divided by (mass of total solution) expressed as a percentage. The solute is what you are dissolving into the solution. Example: you have 90 grams of water, and you add 10 grams of salt (sodium chloride). The water is the solvent, sodium chloride is the solute, and the solution is salt water. 90 grams + 10 grams = 100 grams (mass of total solution). (10 grams) / (100 grams) = 0.1 --> 10% mass mass percent concentration.
27 grams.
500 cubic centimetres of water weighs 500 grams
78.7 grams
The mass of the solution would be the sum of the mass of the sodium chloride and the mass of water. So, the mass of the solution would be 17.8 grams (NaCl) + 217 grams (water) = 234.8 grams.
The mass of the water in the beaker is 150 grams.
The mass of 45 ml of water is approximately 45 grams. The density of water is about 1 gram per milliliter, so 45 ml of water would weigh around 45 grams.
The mass of water can be determined by multiplying the volume of water by its density. Given that the density of water is 1.0 grams per cubic cm, and the volume of water is 50 ml, the mass of the water would be 50 grams.
The mass of water is 6.0 kg per liter. To convert to grams, multiply by 1000. Therefore, the mass of 6.0 L of water would be 6000 grams.
The mass of 1 liter of water is 1000 grams, so the mass of 2 liters of beverage would be 2000 grams (1000 grams/L * 2 L).
The total mass of the products would be 10 grams, as mass is conserved in a chemical reaction. When water decomposes into its elements, hydrogen and oxygen, the total mass of the products will be the same as the mass of the reactant.
Whether all of the sugar dissolved or not, and it would be very unlikely that it would all dissolve in that small an amount of water, the total mass of the solution or mixture would be 250 grams.
Assuming the density of water is 1 g/mL, the mass of the water bottle would be 700 grams. If the density is different, you would need to know the specific density of the material the water bottle is made of to calculate its mass.
The total mass of the solution would be 160 grams (40 grams of copper chloride + 120 grams of water).
The mass of 120 ml of water is approximately 120 grams. This is because the density of water is about 1 gram per milliliter, so 120 ml would weigh 120 grams.
To find the mass of water containing 5.0 grams of hydrogen, we need to set up a proportion using the mass percentage of hydrogen in water. Since water is 11.2% hydrogen by mass, we can calculate the mass of water using the formula: (5.0 grams of hydrogen) / (11.2 grams of hydrogen per 100 grams of water) = x grams of water. Converting grams to kilograms, the mass of water containing 5.0 grams of hydrogen would be 5.0 g / 11.2% = 44.64 g. This figure converted to kilograms is 0.04464 kg.