Answer:
D. and B.
Explanation:
I got it right on my quiz
Assuming that the question is about making glucose, then you need to know the equation for the reaction. The equation should be:
C6H12O6<span>(s) + 6O2(g) -->6CO2(g) + 6H2O(g)
In this equation, 6 molecules of CO2 would react with 6 molecules of H2O which mean it has 1:1 ratio. The molecular weight for CO2 should be 44g/mole and H2O is 18g/mole. Then the calculation would be: 6/6 * (157.35g/44g) * 18g= 64.37g</span>
Answer:
0.0198 M
Explanation:
Given data
- Mass of CaCl₂ (solute): 5.51 g
- Volume of solution: 2.50 L
Step 1: Calculate the moles of solute
The <em>molar mass of CaCl₂</em> is 110.98 g/mol. The moles corresponding to 5.51 g are:
5.51 g × (1 mol/110.98 g) = 0.0496 mol
Step 2: Calculate the molarity of the solution
<em>M = moles of solute / liters of solution</em>
M = 0.0496 mol / 2.50 L
M = 0.0198 M
evaporation systems allow for an endless source of water. you can grab cups of water straight from the sea or even a lake. the use of evaporation allows for you to drink water thats even healthier than getting it from a cloud and it will leave all of the bad parts that used to be in the water in the first container you pour into. this system is most useful in hot climates such as places near the equator.
Answer:
The "unit" remaining after conversion is atoms.
This is a way to calculate the number of atoms, in an specific mass.
Explanation:
When you have a mass, multiplying the molar mass, "grams" are cancelled, so you finally obtained, number of moles.
Moles . atoms/mol, cancel the word mol so you will find out a number of atoms, present at the mass from, the begining.
For example, how many atoms are in 10 g of NaCl
Molar mass NaCl = Na mass + Cl mass
23 + 35.45 = 58.45 g/m
10 g . 1 / 58.45 mol/g . NA/ 1 mol = 3.42x10²⁰ atoms
NA = Avogadro number
