Answer:
P= 0.87g/mL or 0.87g/cm^3
Explanation:
P=m/v
P=density
P=17.4g/20mL
P= 0.87g/mL
1mL=1cm^3
Answer: i say yes
and the information i got why is down below that way you can see if im right if you dont trust me
What OSHA standards require a fire prevention plan?
A fire prevention plan must be in writing, be kept in the workplace, and be made available to employees for review. However, an employer with 10 or fewer employees may communicate the plan orally to employees. The name or job title of employees responsible for the control of fuel source hazards.
Explanation:
While OSHA strongly recommends that all employers have an FPP, you are only required to have a fire prevention plan when an applicable OSHA standard requires it. Those standards include: Ethylene oxide, §1910.1047. Methylenedianiline, §1910.1050.
Answer:
Mass of zinc react with oxygen = 156.91 g
Explanation:
Given data:
Volume of oxygen = 18.9 L
Temperature = 15°C
Pressure = 1.50 atm
Mass of zinc react with oxygen = ?
Solution:
Chemical equation:
2Zn + O₂ → 2ZnO
Number of moles of oxygen:
PV = nRT
1.50atm ×18.9 L = n× 0.0821 atm.L / mol.K × 288 K
28.35 atm.L = n× 23.64atm.L / mol
n = 28.35 atm.L / 23.64atm.L / mol
n = 1.2 mol
Now we will compare the moles of oxygen and Zn.
O₂ : Zn
1 : 2
1.2 : 2/1×1.2 = 2.4 mol
Mass of zinc required:
Mass = number of moles × molar mass
Mass = 2.4 mol × 65.38 g/mol
Mass = 156.91 g
Answer:
"Rain mixes with pollutants in the air to interact with rock" is an example of chemical weathering
Explanation:
The first statement refers to something known as "freeze thaw" which is mechanical weathering.
The second and fourth statements also refer to mechanical weathering