When 83.3 grams of phosphorus pentachloride react with an excess of water, as shown in the unbalanced chemical equation below, how many moles of hydrochloric acid will be produced?

PCl5 + H2O yields H3PO4 + HCl

0.4 moles

1.0 moles

1.6 moles

2.0 moles

Which of the following are mixtures? Air, salt, water, salt water

Two atoms with the same number of protons but a different number of neutrons are A. ions of the same element. B. in the same column of the periodic table. C. next to each other on the periodic table. D. isotopes of the same element.

Compare and contrast speed and acceleration (how are they similar and how are they different) ?

Write an equation that expresses the law of thermodynamics in terms of heat and work

Which statement accurately describes liquids? A. They have indefinite volume and indefinite shape. B. They have definite volume and indefinite shape. C. They expand to fill all the space available. D. They have definite volume and definite shape.

What is the concentration of a solution, in gsolute/100gsolvent, made using 2.83 g of KNO3 in 2.03 g of H2O? Do not include units in your answer.

Why does pressure change in this way? Select all that apply.

Will platinum (pt) metal react with a lead (ii) nitrate solution?

One kilogram (1 kg) of a 2.5% ki solution

Two hydrogen atoms form a hydrogen molecule when