If ammonia were formed from dalton's simplest formula of one atom of each element, what would he have concluded about the relative masses of nitrogen and hydrogen?

A 2.50 g sample of solid sodium hydroxide is added to 55.0 mL of 25 °C water in a foam cup (insulated from the environment) and stirred until it dissolves. What is the final temperature of the solution? ΔHsoln = -44.51 kJ/mol.

Which of these experimental designs could lead to bias? A) Two mice are given the choice between Swiss and American cheese. B) Phil and Bart race down the street to determine who is the fastest.

How many milliliters of 11.5 M HCl (aq) are needed to prepare 855.0 mL of 1.00 M HCl (aq) ?

What type of reaction does this equation represent? 2I4O9 (s) → 4I2 (s) + 9O2 (g)

A chemical equation that shows the same number of each kind of atom on both sides of the equation is said to be

What is a light-year? A. the distance light travels in one earth year B. the distance light travels from the sun to the earth C. the distance light travels in one orbit of the moon D. the time it takes light to travel across the universe

What's is a logical way that you could begin to investigate why your tire had low air pressure?

after balancing the redox equation FeCl3+Zn--->ZnCl2+Fe, what are the coefficients, in order from left to right?

Aluminum oxide, Al2O3, is used as a filler for paints and varnishes as well as in the manufacture of electrical insulators. Calculate the number of moles in 47.51 g of Al2O3.

What volume of 2.00 m must be added to 150.0 ml of 1.00 m chloroacetic acid to produce a buffer solution having a ph of 3.30?