Discover Questions

When we look at the stars are we seeing what they looked like years ago? And how many years ago is it? The hydronium ion concentration in an aqueous solution at 25 C is 6.1 × 10-2 M. What is the hydroxide ion concentration in this solution? Find two different integers such that the square of the integer is 12 less than seven times the integer? Find the mean of each pair of numbers. Graph the numbers & the mean on a number line. a. 5 and 15
b. -5 and 15
c. -5 and -15
d. 137 and 441? Oragnes sell for $2.84/kg. The price per 100g is?