A 36 g sample of the substance contains 91% water. After drying, the weight of the sample was reduced to 18 g. What percentage of water is now in the sample?
Did you find an error or inaccuracy? Feel free to write us. Thank you!
Thank you for submitting an example text correction or rephasing. We will review the example in a short time and work on the publish it.
Tips to related online calculators
You need to know the following knowledge to solve this word math problem:
Related math problems and questions:
- Water percent
A 15 g sample of the substance contains 70% water. After drying, the substance reduced the weight to 9 g. What percentage of water is now in the sample?
Mushrooms lose 90% by weight drying. How many fresh mushrooms are needed for 5 kg of dried mushrooms?
The barrel is 199 liters of 38% acid. How many percent acids occur when 61 liters revoke and replace with the same amount of water?
How many cubic centimeters of 96% alcohol is needed to obtain 0.75 liters of 40% alcohol?
The pharmacist had a 12 l vessel herbal lotion, which contained a 30% active ingredient. Her assistant poured 18 liters of herbal lotion containing 45% of the active ingredient into a container. What percentage of herbal lotion was produced?
- Solutions, mixtures
How many liters of 70% solution must we add to 5 liters of 30% solution to give us a 60% solution?
Fresh mushrooms contain 90% water, dried only 12%. How many kilograms of fresh mushrooms are needed for 5kg dried?
- Apples 2
Dried apples contain 15% water. Fresh apples contain 80% water. How many kg of apples we need buy in order to get 3 kg of dried apples?
How many ml should we pour 30% of peroxide (H2O2) into 100ml H2O to give a 20% solution?
Bronze has 80% copper and 20% tin. How much copper will we need to produce bronze if we have 39kg of tin?
What percentage vinegar we get if we mix 1 if dm³ eight percent vinegar with 1.5 dm³ six percent vinegar?
The pharmacy adds to 3 liters of 95-percent alcohol 5 liters of 38.04 percent alcohol. How much percent alcohol the pharmacy got?
- Alcohol mixture
Three liters of 96 percent alcohol set up a certain amount of distilled water to form 54-percent alcohol. How many liters of distilled water was used?
- Sea water
Mixing 62 kg of sea water with 84 kg rainwater is created water containing 3.1% salt. How many percent sea water contains salt?
- Acid evaporation
How many kilograms of water do we have to evaporate from 100 kg of 32% acid to make it 80% concentration?
- Disinfecting solution
How much distilled water is necessary to pour into 500 ml of 33% hydrogen peroxide solution to obtain 3% disinfecting solution?
- Mixture of nuts
Alice bought a mixture of nuts containing cashew nuts, hazelnuts and peanuts in a ratio of 1: 2: 3. Calculate the weight in grams of the whole mixture if the peanuts weigh 90 g.