Chemistry, 10.07.2019 22:30 cthompson1107
Apowder has a mass of 40.0g when the powder is added to 30.0ml of water the total volume is 45.0ml what is the denaity of the powder
Answers: 1
Chemistry, 21.06.2019 14:20
Which of the following statements is not true? β’ a. covalent compounds have low melting and boiling points. β’ ob. covalent bonds between atoms of a compound are relatively weak compared to bonds between molecules. β’ c. covalent bonds occur between nonmetals. β’ d. covalent compounds are often gases or liquids.
Answers: 2
Chemistry, 22.06.2019 04:00
Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?
Answers: 3
Chemistry, 22.06.2019 14:50
Consider the following multistep reaction: a bβab(slow) a abβa2b(fast)βββββββββββββββββ 2a bβa2b(overall) based on this mechanism, determine the rate law for the overall reaction. express your answer in standard masteringchemistry format. for example, if the rate law is k[a]3[b]2 type k*[a]^3*[b]^2
Answers: 3
Chemistry, 22.06.2019 17:30
A650 ml sodium bromine solution has a bromide ion concentration of 0.245 m. what is the mass (g) of sodium bromide in solution? a) 103.b)0.00155.c)16400.d) 16.4.e) 0.159
Answers: 2
Apowder has a mass of 40.0g when the powder is added to 30.0ml of water the total volume is 45.0ml w...
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