Answer:
31.36 L of chlorine gas will react with 56 g of calcium.
Explanation:
Mass of calcium = 56 g
Moles of calcium gas =
According to reaction, 1 mole of calcium react with 1 mole of chlorine gas.
Then 1.4 mol of calcium wiull react with :
chlorine gas
At standard temperature and pressure. 1 mol of gas occupies 22.4 L of volume.
Then 4.1 moles of chlorine gas will occupy :
31.36 L of chlorine gas will react with 56 g of calcium.
Answer:
The correct answer is: cubic or isometric crystal system
Explanation:
The cubic crystal system, also known as the isometric crystal system, is one of the seven crystal systems, that has a cubic unit cell.
It can be classified into three types: simple cubic system, body-centered cubic system (bcc) and face-centered cubic system (fcc).
The salt, sodium chloride, forms isometric crystals and thus is part of the cubic or isometric crystal system.
(2) Stable isotopes are used as reactants.
(3) There is no chance of biological exposure.
(4) A large amount of energy is produced.
Given:
64.82 g of aluminum metal
100.0oC is cooled to 82.0 °C
specific heat of aluminum is 0.897 J /g °C.
Required:
Change in heat energy
Solution:
This can be solved through the equation H = mCpT where H is the heat, m is the mass, Cp is the specific heat and T is the change in temperature.
The specific heat of the water is 4.18 J/g-K
Plugging in the values into the equation
H = mCpT
H = (64.82) (0.897 J /g °C) (82 – 100)
H = -1,046.6 J
A. the cumulative nature of science
B. the quantitative nature of science
C.the importance of thorough review of scientific papers
D. the importance of not publishing science until it is final