How many grams are in 2.5 pound sample

Which compound forms from 2 parts of hydrogen and 1 part of oxygen?

Which of the following is equal to 5.3 mm3? 5.3 x 10-6 m3 5.3 x 10-9 m3 5.3 x 10-6 cm3 5.3 x 103 cm3

An atom of an element with atomic number 48 and mass number 120 contains A. 48 protons, 48 electrons, and 72 neutrons. B. 72 protons, 48 electrons, and 48 neutrons. C. 120 protons, 48 electrons, and 72 neutrons. D.

What is the smallest component or the most basic building block of any element? A. An Atom, B. a compound C. gas D. element

How many atoms are in sodium sulfide?

Will mark branliest. Calculating percent yield: For the reaction Cu + 2AgNO3 → Cu (NO3) 2 + 2 Ag, adding 127 grams of copper to lots of silver nitrate yields 410 grams of silver. What is the percent yield of silver? I'm desperate.

Which of the following are considered strong bases? That is, they are capable of doing E2 reactions. (choose all that apply) Hydroxide, OH- Ammonia, NH3 Water, H20 ОMethanol, Снзон Methoxide, CH30- Cyanide, CN- Amide, NH2-

Describe an experiment to show that zinc is more reactive than copper

The lower the ignition temperature, better the fuel. True or false? Why?

MATH. Tom bought 15 party hats priced at 3 for $0.65 and 56 noisemakers priced at 7 for $1.25. What was the total cost of the hats and noisemakers, not including tax? A. $9.75 B. $8.75 C. $10.70 D. $13.25