Mass + percentages - practice problems - page 2 of 10
Number of problems found: 194
- Solutions 70424
To what extent do we need to mix 82% and 54% solutions to get a 76% solution? - Salicylic 38401
Prepare 600 g of an 8% solution of salicylic acid. - Chocolate 3886
Chocolate has 86% cocoa. Determine how many grams of cocoa are in 165-gram chocolate. - Water percent
A 15 g sample of the substance contains 70% water. After drying, the substance reduced its weight to 9 g. What percentage of water is now in the sample? - Radioactive material
A radioactive material loses 10% of its mass each year. What proportion will be left there after n=6 years? - Grinding 82435
We get 80 percent flour by grinding grain. How much grain do we need to grind to get 400 kg of flour? - Diabetes 6057
Diabetes contains 13% sugar. From what amount of diabetes do we get 15q of sugar? How much sugar do we get from 15q of diabetes? - 9332% 4371
When 17.2 kg is 94.9332%, how much kg is 66%? - Information 3273
One serving of breakfast porridge weighs 175 g. According to its nutritional information, it contains 75 g of fiber. What percentage of fiber is in this porridge? - Bronze
How much tin is in 3.6 kg of bronze if it contains 15%? - Uranium ore
Uranium ore contains 0.2% pure uranium, and pure uranium includes 0.07% fissile uranium. How many grams of fissile uranium has 2800 ton of uranium ore? - Calculate 44351
Calculate how many grams of iodine and ethanol are needed to prepare 200 grams of 6% iodine in ethanol solution. - Solution 38451
Prepare 2 liters (kg) of a 3% salt solution in water. - Bodybuilder 9521
The bodybuilder weighs 96 kg. The second bodybuilder weighs 25% more than the first bodybuilder. What is the sum of their weights? - Mushrooms
Mushrooms lose 90% by weight drying. How many fresh mushrooms are needed for 5 kg of dried mushrooms? - Bath salts
Bath salt A weighs 900 grams and costs 36,40 CZK. Bath salt B weighs 1000 grams but costs 85 CZK. How much is a bath salt A cheaper than B salt? - Tare
The gross weight of a shipment is 6927 kg, and its tare is 7%. Calculate the net weight of the shipment. - Percentage 37141
Mix 0.8 kg of sugar into 2.4 kg of water. What percentage of sugar solution do we get? - Density 3701
4.8g / l a) what is mg / l b) What is per mille if the density of alcohol is 80% of the density of blood (water)? - Obtained 2812
45% of pig iron is obtained from iron ore and 70% of steel from it. How much steel is made from 100 tons of iron ore?
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