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jonny [76]
3 years ago
5

What element has the atomic mass 26.981538​

Chemistry
1 answer:
jok3333 [9.3K]3 years ago
6 0

Answer:

the answer is aluminum

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A pump contains 1.5 L of air at 175 kPa. You draw back on the piston of the pump, expanding the volume until the pressure reads
Tresset [83]

Answer:

\large \boxed{\text{86.8 L}}

Explanation:

The temperature and amount of gas are constant, so we can use Boyle’s Law.

p_{1}V_{1} = p_{2}V_{2}

Data:

\begin{array}{rclrcl}p_{1}& =& \text{0.579 atm}\qquad & V_{1} &= & \text{150 L} \\p_{2}& =& \text{1.00 atm}\qquad & V_{2} &= & ?\\\end{array}

Calculations:  

\begin{array}{rcl}0.579 \times 150 & =& 1.00V_{2}\\86.85 & = & 1.00V_{2}\\V_{2} & = &\dfrac{86.85}{1.00}\\\\& = &\textbf{86.8}\\\end{array}\\\text{The new volume of the gas is } \large \boxed{\textbf{86.8 L}}

6 0
3 years ago
Which of the following sets of quantum numbers refers to a 4p orbital
Fofino [41]

Answer:

For the 4p orbital, n=4, which is just the energy level of the orbital. All p orbital has an l quantum number equal to 1, so for the 4p orbital, l=1.

Explanation:

4 0
2 years ago
What is 25 milliliters in cubic centimeters
lubasha [3.4K]

1cc (cubic centimeter) and 1mL (milliliter) are the same volume. So, 25mL = 25cc

3 0
3 years ago
What differs from between a radioactive isotope and a stable isotope
Digiron [165]

A stable isotope has just<em> the right number of neutrons for the number of protons </em>(the <em>n:p ratio</em>) to hold the nucleus together against the repulsions of the protons.

A radioactive isotope has either too few or too many neutrons for the nucleus to be stable,

The nucleus will then emit <em>alpha, beta, or gamma radiation</em> in an attempt to become more stable.  

7 0
3 years ago
What mass of oxygen is contained in a 5.8 g sample of NaHCO3?
jarptica [38.1K]
X:5.8g=16:(23+1+12+3*16)
x:5.=16:84 
x:=5.8* 16/84 
this is approximately 1.1
4 0
3 years ago
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