8 19 A salt is produced in each of the following reactions.
Р
magnesium + dilute hydrochloric acid
Q
zinc oxide + dilute sulfuric acid
R
sodium hydroxide + dilute hydrochloric acid
S
copper carbonate + dilute sulfuric acid
Which statements about the products of the reactions are correct?
1
A flammable gas is produced in reaction P.
Water is formed in all reactions.
2
3
All the salts formed are soluble in water.
A
1, 2 and 3
B
1 and 2 only
с
and 3 only
D
and 3 only
20

Is this a single replacement reaction or there is no

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt