Answer:
<h2>169.96 g</h2>
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volume
From the question we have
volume = 97.68 cm³
density = 1.740 g/cm³
mass = 97.68 × 1.740 = 169.9632 g
We have the final answer as
<h3>169.96 g</h3>
Hope this helps you
Answer:
![\large\boxed{T_2=786.\ºC}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7BT_2%3D786.%5C%C2%BAC%7D)
Explanation:
Ideal gases follow the combined law of gases:
![P_1V_1/T_1=P_2V_2/T_2](https://tex.z-dn.net/?f=P_1V_1%2FT_1%3DP_2V_2%2FT_2)
Where,
![P_1,V_1, and{\text{ }T_1\text{ are the pressure, temperature, and volume of the gas a state 1}](https://tex.z-dn.net/?f=P_1%2CV_1%2C%20and%7B%5Ctext%7B%20%7DT_1%5Ctext%7B%20are%20the%20pressure%2C%20temperature%2C%20and%20volume%20of%20the%20gas%20a%20state%201%7D)
![P_2,V_2, and{\text{ }T_2\text{ are the pressure, temperature, and volume of the gas a state 2}](https://tex.z-dn.net/?f=P_2%2CV_2%2C%20and%7B%5Ctext%7B%20%7DT_2%5Ctext%7B%20are%20the%20pressure%2C%20temperature%2C%20and%20volume%20of%20the%20gas%20a%20state%202%7D)
- Pressure is the absolute pressure and its units may be in any system, as long as they are the same for both states.
- Also, volume may be in any units, as long as it they are the same for both states.
- Temperature must be absolute temperature, whose unit is Kelvin.
Your data are:
- P₁ = 1200.00 mmHg
- P₂ = 1.11842 atm
- V₁ = 85.0 mL
- V₂ = 350.0 mL
- T₂ = ?
- T₁ = 90.0ºC
<u>1. Conversion of units:</u>
- P₁ = 1200.00 mmHg × 1.00000 atm / 760.000 = 1.578947 mmHg
- T₁ = 90.00ºC + 273.15 = 363.15K
<u>2. Solution</u>
- Clearing T₂, from the combined gas equation you get:
![T_2=P_2V_2T_1/(P_1V_1)](https://tex.z-dn.net/?f=T_2%3DP_2V_2T_1%2F%28P_1V_1%29)
![T_2=1.11842atm\times 350.0ml\times 363.15K/(1.578947atm\times 85.0ml)](https://tex.z-dn.net/?f=T_2%3D1.11842atm%5Ctimes%20350.0ml%5Ctimes%20363.15K%2F%281.578947atm%5Ctimes%2085.0ml%29)
![T_2=1,059K](https://tex.z-dn.net/?f=T_2%3D1%2C059K)
![T_2=1059-273.15=786.\ºC](https://tex.z-dn.net/?f=T_2%3D1059-273.15%3D786.%5C%C2%BAC)
Answer: A
Explanation: The spindle fibers bring the chromosomes together in prophase then apart in telophase.
Answer:
Number of valence electrons
Explanation: