Chemistry, 23.06.2019 23:30 jojo492192
If 2 molecules of one reactant combine with 5 molecules of another to produce 3 molecules of a product then which of the following is the correct representation of the reaction? a. 2a + 3b = 5c b. a2 + b5 = c3 c. a2 + b3 = c5 d. 2a + 5b = 3c
Answers: 3
Chemistry, 21.06.2019 21:30
Sex cells from female reproductive organ? 1) mitosis 2) fertilization 3) zygote 4) eggs 5) meiosis 6) sperm
Answers: 2
Chemistry, 23.06.2019 04:00
Why must humans find substitutes for many minerals found on earth? (a) form at an extremely slow rate (b) controlled by other countries (c) too deep in the earth to collect
Answers: 1
Chemistry, 23.06.2019 10:50
Achemist reacted 57.50 grams of sodium metal with an excess amount of chlorine gas. the chemical reaction that occurred is shown. na + cl2 → nacl if the percentage yield of the reaction is 86%, what is the actual yield? show your work, including the use of stoichiometric calculations and conversion factors.
Answers: 1
Chemistry, 23.06.2019 17:10
Two changes are described below. a green banana turns yellow and ripens. a layer of rust forms on an iron nail. which statement is true about the two changes? a) both are chemical changes because new substances are formed. b) both are physical changes because only the physical state of the substances change. c) a is a physical change due to a change of state, but b is a chemical change because new molecules are formed. d) a is a chemical change due to a change of state, but b is a physical change because new molecules are formed.
Answers: 3
If 2 molecules of one reactant combine with 5 molecules of another to produce 3 molecules of a produ...
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