A 2750g sample of a substance occupies a volun

volume of 250.0 cm! Find its density in g/cm'.

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What is the rate of the reaction 4 nh3 + 5 o2 → 4 no + 6 h2o when 0.0500 mol/l of nh3 is being consumed per second? 1. 0.0125 m·sec-1 2. one of the other answers has the right number but the units are wrong. 3. - 0.0125 m·sec-1 4. 0.200 m·sec-1 5.

The bonds that are broken when water vaporizes are a. ionic bonds. b. hydrogen bonds between water molecules. c. covalent bonds between atoms within water molecules. d. polar covalent bonds. e. nonpolar covalent bonds.

If the caffeine concentration in a particular brand of soda is 2.87 mg/oz, drinking how many cans of soda would be lethal? assume 10.0 grams of caffeine is a lethal dose, and there are 12 oz in a can.

Conversion of an atom of one element to an atom of another element

What are possible reasons for a percent yield that is under 100%

24g copper is submerged in water in a graduated cylinder, and the total volume increases by 2.7 mL. who's is the density of copper?

Does gadolinium have an odor?

What kind of intermolecular forces act between a hydrogen iodide molecule and a dichloroethylene

Match each element to the number of electrons in its valence shell. Match Term Definition Beryllium (Be) A) Three Carbon (C) B) One Lithium (Li) C) Two Boron (B) D) Four

What did Ernest Rutherford's gold foil experiment demonstrate about atoms? A. Their positive charge is located in a small region that is called the nucleus. B. Their negative charge is located in small particles that are called electrons. C.