Calculate the density of a substance that has a mass of 250g and a volume of 50. Ml

A-50 g/mL

B-5.0 g/mL

C-0.50 g/mL

D-0.005 g/mL

Compared to an element of calcium-40 an atom of potassium-39 contains fewer

If the initial amount of iridium-192 produces radiation at 1,000 times the safe level, how long will it take before radiation levels drop below the safe level? reddit

Increasing the concentration increases the speed of reaction by

The average daytime temperature on the planet Mercury is 683 K. What is this temperature in Celsius? A. 956oC B. 680oC C. 410oC D. 715oC

What are some human and nonhuman factors that contribute to climate change?

Which statement about Clinton s impeachment is true? A. Clinton s impeachment was supported by the majority of Americans. B. The impeachment charges were based on fraud found during the Whitewater investigation. C.

When the equation ZnS+O ZnO+SO isbalanced the coefficientof O is 1, 5, 3, or2

Radioactive elements decay at a know rate known as half-life. Choose all of the correct statements concerning half-life. Carbon-14 has a half-life of 5,730 years. A 30 gram sample will be 10 grams after 5,730 years.

I am the most reactive metal in Period 4.

Titanium is a transition metal used in many alloys because it is extremely strong and lightweight. titanium tetrachloride (ticl4) is extracted from titanium oxide using chlorine and coke (carbon). if you begin with 1.