Answer:
Y = 92.5 %
Explanation:
Hello there!
In this case, since the reaction between lead (II) nitrate and potassium bromide is:
Exhibits a 1:2 mole ratio of the former to the later, we can calculate the moles of lead (II) bromide product to figure out the limiting reactant:
Thus, the limiting reactant is the KBr as it yields the fewest moles of PbBr2 product. Afterwards, we calculate the mass of product by using its molar mass:
And the resulting percent yield:
Regards!
Answer: The volume of boron trifluoride gas that is collected is 18.6 L
Explanation:
According to the ideal gas equation:
PV=nRT
P = Pressure of the gas = 1 atm
V= Volume of the gas= ?
T= Temperature of the gas in kelvin =
R= Gas constant = 
n= moles of gas= 854 mmol = 0.854 mol (1mmol=0.001mol)
Thus volume of boron trifluoride gas that is collected is 18.6 L
Explanation:
The periodic table is an arrangement of the chemical elements, organized on the basis of their atomic numbers, electron configurations and recurring chemical properties.
Answer:
option C is the correct answer
Answer: B. Compound
Explanation: Compound are the substances which are formed by the combination of two or more elements.
Although the phase of the carbon dioxide is gaseous that is single phase, stll it is not considered as the Homogeneous mixture because in carbon dioxide , both the elements carbon and oxygen reacts with each other chemically to form the gas. This doesnot happen in te mixture.
Thus carbon dioxide is considered as the compound.
