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 22:00
What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz
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Chemistry, 22.06.2019 03:10
Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.
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Chemistry, 22.06.2019 04:30
How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?
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Chemistry, 22.06.2019 12:20
Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.
Answers: 3
Which is an indication that a chemical change to a substance has occurred? a. it changes shap...
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