What is the correct scientific notation for 640,000,000?

Question 5 options:

A. 6.4X10^8

B. 6.4X10^10

C. 64X10^10

D. 640X10^8

Hclo is a weak acid (ka = 4.0 * 10-8) and so the salt naclo acts as a weak base. what is the ph of a solution that is 0.089 m in naclo at 25 °c?

An aqueous magnesium chloride solution is made by dissolving 6.92 6.92 moles of MgCl 2 MgCl2 in sufficient water so that the final volume of the solution is 2.00 L 2.00 L. Calculate the molarity of the MgCl 2 MgCl2 solution.

Which statement best describes the law of conservation of energy?

A compound contains sulfur, oxygen, and chlorine. Analysis shows that it contains by mass 26.95% sulfur and 59.61% chlorine. What is the simplest formula for this compound?

If you measured the ph of stomach acid and of bleach, a. both would be above 7. b. the ph of stomach acid would be below 7, but the ph of bleach would be above 7. c. the ph of stomach acid would be above 7, but the ph of bleach would be below 7. d.

Would precipitation occur when 500 mL of a 0.02M solution of AgNO3 is mixed with 500 mL of a 0.001M solution of NaCl? Show your work.

What compound is always part of an aqueous solution?

How did scientists carry out research before and after the scientific revolution?

A student was comparing the solubility of equal amounts of table salt and table sugar at different temperatures. The table below shows the four samples that the student used and the temperature of the water that they were dissolved in.

How many cases of measles would you predict were reported last year