Chemistry Answers

explain why food doesn't spoil as fast when its refrigerated as it would at room temperature

What volume of a 0.250 M KOH will be required to neutralize 5.25 ml of 0.300 M H3PO4? Write the balance chemical equation.

What will the volume of a sample be if 335 mL of an ideal gas at 24 °C and 1.08 atm is cooled to 17 °C and 0.976 atm?

When adding 127.345 and 1.3 ,the results on the calculator is 128.645.round the answer to the appropriate precision based on the precision of the numbers in the sum

You have taken measure four times.To demonstrate that your measurement is repeatable ,is it more desirable that there is a low standard deviation or high standard deviation?

Calculate standard deviation using Bessel correction of the three values given below

21

22

23

how many grams of silver iodide, AgI, are produced from 55.3

55.3 g of calcium iodide, CaI₂?

An unknown element (Y) is a nonmetal and has a valence electron configuration of ns²np4. (i) How many valence electrons does this element have? (ii) What is the formula of the compound this element would form with potassium? (iii) Would this element have a larger or smaller radius than barium? (iv) Would this element have a greater or smaller ionization energy than fluorine?

At what temperature will 4.15g of CO2 exert a pressure of 855 mmHg at a volume of 650 ml? (make sure to turn grams into moles)

Enter the electron configuration for Ne