Answer:
Electron configuration: [He] 2s²2p⁴
Explanation:
Answer:
The answer is 130.953 g of hydrogen gas.
Explanation:
Hydrogen gas is formed by two atoms of hydrogen (H), so its molecular formula is H₂. We can calculate is molecular weight as the product of the molar mass of H (1.008 g/mol):
Molecular weight H₂= molar mass of H x 2= 1.008 g/mol x 2= 2.01568 g
Finally, we obtain the number of mol of H₂ there is in the produced gas mass (264 g) by using the molecular weight as follows:
mass= 264 g x 1 mol H₂/2.01568 g= 130.9731703 g
The final mass rounded to 3 significant digits is 130.973 g
There are 600 hours.
explanation
each day has 24 hours and we want to know how much hours is equivalent to 25 days so we multiply 24 times 25 which is 600.
Answer: Mass number
If you look at the periodic table, you can simply find the mass number either on the top or bottom of the element.
Answer:
After 1.95x10⁴ s, total pressure is 0.34 atm
Explanation:
t(s) 0 1000 3000 7000
PTotal (atm) 0.15 0.16 0.18 0.20
These are the data of the experiment, so let's make a linear regression
X | Y
0 | 0.15
1x10³ | 0.16
3x10³ | 0.18
7x10³ | 0.20
You can do this by the calculator, but let's do it manually.
Y = mx + b
m = (Y₂ - Y₁) / (X₂ - X₁)
m = 0.18 - 0.16 / 3x10³ - 1x10³
m = 0.02 / 2x10³ = 1x10⁻⁵
b = 0.15 (y-intercept, where x is 09
Y = 1x10⁻⁵ X + 0.15
Notice that in the statement, after 7000 s, pressure is 0.22 atm
1x10⁻⁵ . 1.95x10⁴ + 0.15 = 0.34atm
