Answer:
2.268
Explanation:
5 lb × 0.45359237 = 2.26796185 kg
How to convert Pounds to Kilograms
1 pound (lb) is equal to 0.45359237 kilograms (kg).
1 lb = 0.45359237 kg
The mass m in kilograms (kg) is equal to the mass m in pounds (lb) times 0.45359237:
m(kg) = m(lb) × 0.45359237
Example
Convert 5 lb to kilograms:
m(kg) = 5 lb × 0.45359237 = 2.268 kg
Hope this helped!!!
Answer:
2.26796 kg
Explanation:
Suppose you have 1000 lb of waste copper (II) oxide sitting in the basement of your factory. Do you see a problem with sending it to a landfill?
Answer:
Yes.
Explanation:
Yes, we have a problem with sending it to a landfill of copper oxide because it has harmful effect on the health of humans as well as more weight of the copper oxide. Copper oxide usually found in powder form which can easily be inhaled that causes death of the cell due to toxic effect on the mitochondria and lysosomes of the cell. It makes problem of health in carrying the copper oxide from the basement of the factory to the landfill region due to its power form so we can say that it can do problems to human health while carrying from one place to another.
22 Determine the molar mass of an unknown gas that has a volume of 72.5 mL at a temperature of 68C, and a pressure of 0.980 atm and a mass of 0.207 g.
Answer:
81.5g/mol
Explanation:
Molar mass is the ratio between mass of a substance (In this case, 0.207g) and moles presents in this mass.
To solve this question we must find the moles of the gas in order to obtain the molar mass using:
PV = nRT
PV / RT = n
Where P is pressure = 0.980atm
V is volume in Liters = 0.0725L
R is gas constant = 0.082atmL/molK
T is absolute temperature = 68°C + 273.15 = 341.15K
0.980atm*0.0725L / 0.082atmL/molK*341.15K = n
2.54x10⁻³ moles = n
Thus, the molar mass of the gas is:
0.207g / 2.54x10⁻³ moles
81.5g/molWhich of the following is a large, burning ball of gas? (2 points)
a
Asteroid
b
Moon
c
Planet
d
Sun
Answer: D: sun
Explanation:
Select which of the following is a major disadvantage of using nuclear power to generate electricity.
The power plants are inexpensive to build
A small amount of power is produced
No greenhouse gases are produced
The by-product of nuclear power is radiation
Answer:
The power plants
are inexpensive to build
Think about a wooden chair and a balloon. What do these two objects always have in common?
Both are made of atoms.
Both have the same physical properties.
Both are made of the same kind of atom.
Both are made of the same number of atoms.
Answer:
both are made of atoms. .
Answer:
Both are made of atoms.
Explanation:
make this and tell me how u like it its fat lady from hairy pawter find the pics on elgoog or use mine movie and site was changed its on scratch a web
Answer:
are u brocken
Explanation:
Calculate the molarity of each aqueous solution with the given amount of Nacl58.44 and final volume. A .3.30 in 0.340L,6.00mol in 550ml,0.0160mol in 9.00ml
Answer:
For A: The molarity is the solution 9.706 M
For B: The molarity of the solution is 10.91 M.
For C: The molarity of the solution is 1.78 M.
Explanation:
Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L.
The formula used to calculate molarity:
[tex]\text{Molarity of solution}=\frac{\text{Number of moles of solute}}{\text{Volume of solution (L)}}[/tex] ......(1)
For A:
Number of moles = 3.30 moles
Volume of solution = 0.340 L
Plugging values in equation 1:
[tex]\text{Molarity of solution}=\frac{3.30 mol}{0.340 L}=9.706 mol/L[/tex]
For B:
Number of moles = 6.00 moles
Volume of solution = 550 mL = 0.550 L (Conversion factor: 1 L = 1000 mL)
Plugging values in equation 1:
[tex]\text{Molarity of solution}=\frac{6.00 mol}{0.550 L}=10.91 mol/L[/tex]
For C:
Number of moles = 0.0160 moles
Volume of solution = 9.00 mL = 0.009 L
Plugging values in equation 1:
[tex]\text{Molarity of solution}=\frac{0.0160 mol}{0.009 L}=1.78 mol/L[/tex]
A solution of 12M HCl is diluted so that it goes from 550mL to a total volume of 1000mL. What is the new concentration of the solution?
Answer:
6.6M
Explanation:
C=concentration
V=Volume
C1V1=C2V2
rearrange formula to find C2
(C1V1)/V2= C2
(12M x 550mL)/1000mL= C2
6600M*mL*/1000*mL* =C2 (cancel units)
6.6M=C2
What would be the effect on this reaction of increasing the temperature?
2H2 + O2 = 2H20 + energy
A) the rate of formation of H2O would increase
B) The forward reaction would be favored
C) Increasing the temperature would not have an effect on this reaction
D) The rate of the forward reaction would decrease
Answer:
D) The rate of the forward reaction would decrease
Explanation:
The statement that describes effect on the reaction of increasing the temperature is "the rate of the forward reaction would decrease."
What is temperature?Temperature is the measurement of a body's level of hotness or coolness.
The average kinetic energy of the system is measured by temperature. The kinetic energy of particles in a matter raises as they move faster, which boosts the temperature of the system. When two bodies of differing temperatures come into touch, heat is the energy exchanged between them.
The term "exothermic reaction" refers to a reaction that releases energy. An exothermic reaction, in other words, produces heat. The temperature of the reaction will rise unless it is cooled in some way. When you use an external heater to raise the temperature, it slows or reverses the reaction, reducing the number of products while increasing the amount of reactants.
Hence the correct answer is D.
Learn more about temperature here,
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How many molecules is 6.11 moles of Zn?
The answer is 0.015295197308045
We assume you are converting between moles Zinc and gram. You can view more details on each measurement unit: molecular weight of Zinc or grams The molecular formula for Zinc is Zn
A student dilutes 50.0 mL of a 0.10 mol/L to 0.010 mol/L. Which statement is true?
Balance the following equation
_MgF2 + _Li2CO3 -> _MgCO3 + _LiF
Answer:
1 MgF2 + 1 Li2CO3 --> 1 MgCO3 + 2 LiF
Explanation:
When we celebrate a new year we are really celebrating what?
What is the molar concentration (molarity) of 1.0 mol of KCl dissolved in 750 mL of
solution?
Answer:
Molarity is moles per liter. You have one mole in 0.750 liters
Explanation: