Chemistry, 13.01.2021 18:40 Beastmode1551
Calculate the percent by mass of C in NaHCO3 if an 84.0 g sample contains: 23.0 g of Na, 1.0 g of H, 12.0 g of C, and 48.0 g of O. (ONLY TYPE THE NUMBER NOT THE UNIT)
Answers: 1
Chemistry, 21.06.2019 20:50
Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread
Answers: 2
Chemistry, 22.06.2019 10:00
Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.
Answers: 1
Chemistry, 22.06.2019 18:30
When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device
Answers: 2
Calculate the percent by mass of C in NaHCO3 if an 84.0 g sample contains: 23.0 g of Na, 1.0 g of H,...
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