Chemistry, 21.03.2020 01:57 alexussaniyah
Question 1: Would dissolving sugar into a cup of coffee be considered a physical or chemical change? Explain.
Question 2: Identify 3 physical changes that could occur with a sheet of paper.
Question 3: Identify 2 physical properties of a pencil.
Question 4: Is the process of digestion a physical or chemical change? Explain.
Question5: Identify the evidence of a chemical reaction for the following:
Answers: 2
Chemistry, 22.06.2019 10:00
Part 1: include important facts found through your research. part 2: include your visual display. include your summary of “the chemistry of water” from the national science foundation website. include your experiment. part 3: include responses to the reflection questions.
Answers: 1
Chemistry, 22.06.2019 13:00
What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.
Answers: 3
Chemistry, 22.06.2019 17:50
Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?
Answers: 2
Question 1: Would dissolving sugar into a cup of coffee be considered a physical or chemical change?...
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