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shepuryov [24]
3 years ago
14

How are the number of protons represented in the periodic table?

Chemistry
2 answers:
Vadim26 [7]3 years ago
6 0

Answer:

C

Explanation:

Sav [38]3 years ago
5 0

Answer:

The atomic number represents the number of protons

Explanation:

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Solid diarsenic trioxide reacts with fluorine gas (F2) to produce liquid arsenic pentafluoride and oxygen gas (O2). Write the Qc
Flauer [41]

Answer:

QC= [O2]^3/[F2]^10

Explanation:

7 0
3 years ago
17. What is the correct empirical formula for H4C408?
11111nata11111 [884]

Answer:

B

Explanation:

by simlfying it you get HCO2

6 0
2 years ago
What is the mass of a 0.5 mol sample of C2H6?
Eddi Din [679]

Answer: 30.08 g/mol

Explanation:

C2= 12.01 H6=1.01

12.01(2) + 1.01(6) =

24.02 + 6.06 =

30.08 g/mol

3 0
2 years ago
calculate the mass of butane needed to produce 64.1 g of carbon dioxide to three significant figures and appropriate units
cricket20 [7]

Answer:

21.2 gm

Explanation:

calculate the mass of butane needed to produce 64.1 g of carbon dioxide to three significant figures and appropriate units

butane is the hydrocarbon C4H10  

in combustion, we react hydrocarbons with O2 to form CO2 and H2O

so

C4H10  + O2---------------->  CO2 + H2O

BALANCE

2C4H10 + 1302--------> 8CO2 + 10 H2O

the molar mass of CO2 is 12 + 16X2 = 44

64.1 gm of CO2 is

64.1/44 = 1.46 MOLES OF  CO2,

FOR EVERY 8 MOLES OF CO2 WE NEED 2 MOLES OF BUTANE  IT IS A

8:2 OR 4:1 RATIO.  THE MOLES OF C4H10 ARE 1/4 THE MOLES OF CO2

SO

THE MOLES OF C4H10 H10 ARE 1.46/4 =0.365 MOLES

THE MOLAR MASS OF BUTANE IS 58.12

0.365 MOLES OF C4H10 HAS A MASS OF 0.365 X 58.12 = 21.2 gm

6 0
3 years ago
An advertising sign gives off red and green light. a. Which light has higher energy? b. One of the colors has a wavelength of 68
alekssr [168]
A would be right sorry if wrong

4 0
3 years ago
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