Answer:
Molarity for the solution is 1.48 M
Explanation:
Molarity involves the moles of solute that are contained in 1L of solution. It is a sort of concentration. The most usual.
7.73 by mass involves the mass of solute that are contained in 100 g of solution, so this one of ethylene glycol contains 7.73 g of it.
Let's determine the moles of solute
7.73 g / molar mass of ethylene glycol = moles
7.73 g / 62 g/mol = 0.124 mol
If the mass of solution is 100 g, we can determine the volume with density.
Density = Mass / Volume
Volume = Mass / Density
Volume = 100 g / 1.19 g/mL = 84.03 mL
In conclusion, 0.124 moles are contained in 84.03 mL
Molarity is mol/L, so let's convert the volume in L
84.03 mL . 1L / 1000 mL = 0.08403 L
0.124 mol / 0.08403 L = 1.48 M
To solve this we assume
that the gas inside the balloon is an ideal gas. Then, we can use the ideal gas
equation which is expressed as PV = nRT. At a constant pressure and number of
moles of the gas the ratio T/V is equal to some constant. At another set of
condition of temperature, the constant is still the same. Calculations are as
follows:
T1 / V1 = T2 / V2
V2 = T2 x V1 / T1
V2 = 313.15 x 3.50 / 298.15
<span>V2 = 3.68 L</span>
Answer:
yes
Explanation:
since humans dig out the earth for resources o believe that fossils far every species that exists and is extinct will be found and will be pieced together
Answer:
The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the products
Explanation:
The expression that best describes this reaction is that the same amount of carbon will be found in the reactants as in the products.
During the process of photosynthesis, carbon dioxide combines with water using solar energy to produce glucose and oxygen.
It can expressed as depicted below:
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
To validate our choice;
This is a balanced chemical equation:
6 moles of carbon is found on the reactant side and also, 6 mole of carbon on the product side.
But Glucose is not found on both sides of the expression
If the equation is not balanced, you have extra of one substance. If you try to do an experiment, you could wind up with a totally different outcome. Its kind of like baking a cake. If the ingredients aren't the right amounts, you dont get an edible cake.
