How much pure gold should be added to the alloy
The goldsmith has 120 grams of the gold alloy (the mixure of gold and one more other metals) having 75% pure gold. How much pure gold should be added to the alloy which is 80% pure gold?
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Lucas is 1/3 of the mile from home, bicycling at 20 miles per hour, when his brother leaves home on bike to catch up. How fast should Luca's brother go to catch Lucas mile from home?
It turned dark before she was prepared to return home, so friend drove her home at the rate of 80 kilometers per hour. Aya's total traveling time was 3 hours, how far away did her friend live?
At 285 K a bottle has an ideal gas at a pressure of 155.7 x103 Pa. The rubber stopper closing the bottle is removed. The gas expands adiabatically against Pexternal = 111.4 x 103 Pa and some gas is expelled from the bottle in the proce
At 300.0 K a 28-L volume of gas contains the 1.5g of nitrogen, 11 g of methane and 16 g of carbon dioxide. Calculate the partial pressure exerted by each gas.
Sodium carbonate is used to standardize acids in the same way it may be a reagent that you have used KHP in this experiment.
Determine the numbers of grams of the phosphorus-having compound are you putting on your lawn? If the phosphorus-containing compound consists of 43.64% phosphorus, determine the numbers of phosphorus are there in 40lb of fertilizer?
Determine the numbers of grams of KI are required to produce 1.0g of the yellow solid PbI2?
Coin box has 3 times as many nickles and 4 times as many quarters as it does dimes. If box has the total of $96.25, how many coins of each type does it have?
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