An element or compound which occurs naturally in the earth is a ___?

Saltpeter is a compound made of potassium (k), nitrogen (n), and oxygen (o). Every 100.00 g of saltpeter contains 38.67 g potassium and 13.86 g nitrogen. What is the mass of oxygen contained in 334.0 mg of saltpeter

Which of following is the most accurate description of a piston in an internal- combustion engine? A shaft that converts the up-and-down motion into a rotary motion A plug that protrudes through the cylinder head and makes sparks that ignite the

Which of these statements describes a limitation of the Treaty on Plant Genetic Resources? A. It does not involve other countries. B. It does not allow the use of seed banks. C. It does not address threats to genetic diversity. D.

How many neutrons and protons are there in the nuclei of the following atoms. a. Li-7 b. O-16 c. Th-232 d. Pu-239

Animals eat these plants and pass the phosphorus through the food chain

What are two type of minerals?

Which symbols would be included in the noble gas notation for an element that had valence electrons in the 5s subshell? Ar Kr Xe Rn

A sample of sulfur dioxide occupies a volume of 562 mL at 45.° C and 720 kPa. What volume will the sulfur dioxide occupy at STP?

Does a solution have to involve a liquid? Explain your answer

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