Chemistry, 20.02.2021 06:40 quanyoung88
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2. Indicate the number of molecules in:
a. 0.5 moles NH3
b. 1 mole of KOH
3. Indicate how many moles of compounds are in:
a. 1 g of HCl
b. 1g H2
c. 1 g CH4
4. One container contains 150 g of ethyl alcohol, C2H6O.
a. Calculate the number of moles of C2H6O
b. The number of C2H6O molecules
5. What is the centesimal composition by mass of Cu (NO3) 2?
6. A compound has the following centesimal composition by mass: Na: 43.4%, C: 11.3%, O: 45.3%. Find your formula
Data: Atomic masses: Ag = 108; N = 14; Al = 27; P = 31; O = 16; H = 1; K = 39; Cl = 35.5; C = 12;
Answers: 3
Chemistry, 21.06.2019 17:40
What are the resulting coefficients when you balance the chemical equation for the combustion of ethane, c2h6? in this reaction, ethane is burned in the presence of oxygen (o2) to form carbon dioxide (co2) and water (h2o). (g)+(g)→(g)+(g)
Answers: 1
Chemistry, 22.06.2019 07:20
The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.
Answers: 1
Chemistry, 22.06.2019 13:20
Can someone me with 3 and 4 plz. this is for masteries test.
Answers: 2
I'm counting on you guys, this my last chance, give a hand and I give you a good brainliest and 20 p...
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