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Answer:
Celiac disease occurs in the intestines as an allergic response to Gluten in certain cereal grains.
Explanation:
Answer:
116 g
Explanation:
From the question given above, the following data were obtained:
Number of mole of calcium = 2.9 moles
Mass of calcium =.?
The mole and mass of a substance are related according to the following formula:
Mole = mass / molar mass
With the above formula, we can obtain the mass of calcium. This can be obtained as follow:
Number of mole of calcium = 2.9 moles
Molar mass of calcium = 40 g/mol
Mass of calcium =.?
Mole = mass / molar mass
2.9 = mass of calcium / 40
Cross multiply
Mass of calcium = 2.9 × 40
Mass of calcium = 116 g
Therefore, the mass of 2.9 moles of calcium is 116 g.
Answer:
Benzene is more denser.
Explanation:
Given data:
Mass of ethanol = 3.9 g
Volume of ethanol = 5 mL
Volume of benzene = 5.0 mL
Mass of benzene = 4.4 g
which is denser = ?
Solution:
Density:
Density is equal to the mass of substance divided by its volume.
Units:
SI unit of density is Kg/m3.
Other units are given below,
g/cm3, g/mL , kg/L
Formula:
D=m/v
D= density
m=mass
V=volume
Symbol:
The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.
Density of ethanol:
d = m/v
d = 3.9 g/ 5 mL
d = 0.78 g/mL
Density of benzene:
d = m/v
d = 4.4 g/5.0 mL
d = 0.88 g/mL
So benzene is more denser.