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Tems11 [23]
4 years ago
15

What is the answer if u know please answer

Chemistry
1 answer:
forsale [732]4 years ago
7 0
An atom having 52 protons and 54 electrons would have an atomic number of 52 and a net charge of -2. This element would be 52 Te 2-, or choice A.
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What is the molecular formula of a compound that has a formula mass of 50.48 amu and an empirical formula of ch3cl?
Alex Ar [27]
To find the molecular formula from the empirical formula, you need to find a multiple (x) that will give you the molar mass of the compound which in the question is 50.48 g/mol.

If CH₃Cl is the empirical formula
 molar mass of empirical formula = (12 × 1) + (1 × 3) + (35.5 × 1) g/mol
                                                     =  50.5 g/mol
let x = multiple
let molecular formula = Cₓ H₂ₓ

            multiple = molecular mass ÷ empirical mass
                         =  50.5 g/mol ÷  50.48 g/mol
                         ≈  1


If molecular formula = Cₓ H₃ₓ Cl

then molecular formula = C₍₁₎ H₃₍₁₎ Cl₍₁₎

                                      = CH₃Cl
                                     
3 0
3 years ago
Calculate the average atomic mass of chromium. It's composition is: 83.79% with a mass of 51.94 Amy; 9.50% with a mass of 52.94
Lana71 [14]
Youve gotta multiply the percentages by the masses. Like here
(.8379)(51.94)
8 0
3 years ago
Hellllpppppppp helppppppppp
mixas84 [53]

Answer :

Charles's Law : It is defined as the volume is directly proportional to the temperature of the gas at constant pressure and number of moles.

Mathematically,

V\propto T

                                Boiling water bath        Cool bath 1       Cool bath 2

Temperature (⁰C)                  99                              17                       2

Temperature (K)(T)    273+99=372             273+17=290      273+2=275

Volume of water                  0.0                             27.0                34.0

in cool flask (mL)

Volume of water=              135.8                           135.8               135.8

Air in flask (mL)

Volume of air                    135.8                           108.8               101.8

in cool flask (V)

\frac{V}{T}                                \frac{135.8}{372}=0.365             \frac{108.8}{290}=0.375         \frac{101.8}{275}=0.370

The graph volume versus temperature for a gas is shown below.

3 0
3 years ago
The main purpose of models is to gain a better understanding of the world true or false
Dmitry [639]
It is false, because models don't help you get a better understanding of the world, they help you better understand what you are trying to get from it like a weather model, it helps us see the weather because it is a visual so people would know what type of weather is where.
4 0
3 years ago
An apple has a mass of 297 grams. How many kilograms is this? (Note: You can use the information in the table below to make a co
yan [13]
.297 kilograms
297g x 1 kg/100 g = .297
4 0
3 years ago
Read 2 more answers
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