# Mixtures and solutions + mass - practice problems

#### Number of problems found: 50

- Bronze

How many kg of tin is in 3.6 kg of bronze if it contains 15% tin? - Manganese

Manganese bronze contains the following amounts of metals per pound: copper 0.89 lb, tin 0.10 lb, and manganese 0.01 lb. How much copper is in a shaft that weighs 235 pounds? - Nitric acid

We want to prepare 200 g of 30% nitric acid. We have enough 12% and 60% of this acid. How many of which will we need? - Bronze

Bronze has 80% copper and 20% tin. How much copper will we need to produce bronze if we have 39kg of tin? - Mushrooms

The ratio of dry matter and water is 1: 9 for most mushrooms. Dry matter consists of carbohydrates, proteins, minerals, fat and water in a ratio of 50: 30: 8: 3: 9. How many kg of fresh mushrooms need to be processed into a 10 kg package of dried mushroom - KOH

How many g of 20% KOH solution do we need to mix with 500 g of 30% KOH solution to obtain a 25% KOH solution? - Salt solution

Calculate the weight of a 50% salt solution that we prepare from 120 g of salt. - Shen's

Shen's chocolate bar is 54% cocoa. If the weight of the chocolate bar is 54 grams, how many grams of cocoa does it contain? Round your answer to the nearest tenth. - There

There is 5 l of water with a temperature of 20°C in the bucket. We add 3 liters of hot water. The resulting temperature will be 30°C. What was the temperature of the hot water? - The aluminum

The aluminum object with a weight of 0.80 kg and a temperature of 250°C was placed in the water with a weight of 1.6 kg and a temperature of 23°C. What is the system temperature after reaching equilibrium? We assume that the heat exchange occurred only be - The bath

The bath has water with a volume of 220 l and a temperature of 65°C. Determine the mass m_{2}of water at 15°C to be poured so that the resulting temperature of the water in the bath is 40°C. We neglect the heat exchange between water and the envi - Coffee

One kilogram of cheaper coffee costs CZK 150, one kilogram of more expensive coffee costs CZK 200. We have to prepare a mixture of 35 kg of coffee for 180 CZK. How do we prepare the mixture (how many of which kind of coffee do we need)? - On a

On a specialized website you want to mix your own muesli. 200 g of muesli base costs 170 CZK. You want to add cornflakes in chocolate to the basics. 50g of this ingredient costs 13 CZK. How much do you pay for a 150g mixture when the weight of both compon - Duo mix

In one kilogram of meat of two colors is 650 g of pork, the rest is chicken. One kilogram of pork is 40 CZK more expensive than a kilogram of chicken. How many CZK cost one kilogram of chicken meat so that the price of one kilogram of meat of two colors i - Mixture of coffee

They have to prepare a mixture of coffee in packing centres so that 1 kg costs 240 CZK. There are two types of coffee in stock at the price of 220 CZK per 1 kg and 300 CZK per 1 kg. How many kilograms of each species need to be mixed to prepare 50 kg of t - Two teas

A mixture weighing 10 kg was made from two types of tea. The price of tea was 160 CZK/kg and second tea 170 CZK/kg. The price of the mixture is 166 CZK/kg. How many kilograms of each type of tea had to be mixed? - Coins

The money - coins are minted from the hardest bronze, which contains copper and tin in a ratio of 41: 9. How much copper and tin are in 2kg of bronze money? - Nutballs

The dough for nutballs contains, among other things, two basic raw materials: flour and nuts in a ratio of 2:1. How much is flour, and how many nuts are needed for 1 kg of dough if "other" is 100g? - 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. - Fruit salad

The fruit salad is prepared from oranges and bananas. One kilogram of oranges costs 30 CZK, and one kilogram of bananas costs 18 CZK. How many kilograms of bananas need to be added to half a kilogram of oranges to produce a fruit salad worth CZK 21 per 1

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Mixtures and solutions - practice problems. Mass - practice problems.