Chemistry, 09.09.2019 19:30 mosesbalan7159
An impure sample of solid na₂co₃ is allowed to react with 0.1755 m hcl.
a 0.2337-g sample of sodium carbonate requires 15.55 ml of hcl solution. what is the purity of the sodium carbonate?
Answers: 2
Chemistry, 21.06.2019 23:00
Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?
Answers: 1
Chemistry, 22.06.2019 03:00
Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture
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Chemistry, 22.06.2019 13:30
How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.
Answers: 1
An impure sample of solid na₂co₃ is allowed to react with 0.1755 m hcl.
[tex]na_2co_3 + 2hcl \...
[tex]na_2co_3 + 2hcl \...
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