Chemistry, 15.07.2019 07:30 Bryson2148
Which is an indication that a chemical change to a substance has occurred? a. it changes shape b. new substances are formed c. energy is used or given d. both b and c
Answers: 1
Chemistry, 21.06.2019 23:10
Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.
Answers: 1
Chemistry, 22.06.2019 08:00
This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.
Answers: 1
Chemistry, 22.06.2019 17:30
Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.56 kg of fluorine. a second sample produced 1.32 kg of magnesium. part a how much fluorine (in grams) did the second sample produce?
Answers: 2
Chemistry, 22.06.2019 18:00
How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate
Answers: 3
Which is an indication that a chemical change to a substance has occurred? a. it changes shap...
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