Complete the two problems below:
1. Convert 845.3 to exponential form and explain your answer.
2. Convert 3.21 x 10-5 to ordinary form and explain your answer.
Using the following information, do the conversions shown below, showing all work:
1 ft = 12 inches 1 pound = 16 oz 1 gallon = 4 quarts
1 mile = 5280 feet 1 ton = 2000 pounds 1 quart = 2 pints
kilo (= 1000) milli (= 1/1000) centi (= 1/100) deci (= 1/10)
1. 2.73 liters = ? ml
2. 8.6 pts = ? qts
Do the conversions shown below, showing all work:
1. 28oC = ? oK
2. 158oF = ? oC
3. 343oK = ? oF
Be sure to show the correct number of significant figures in each calculation.
1. Show the calculation of the density of benzene if 28.6 g occupies 32.7 ml.
2. Show the calculation of the volume of 14.3 grams of acetone with density of 0.785 g/ml
1. 13.010 contains ? significant figures.
2. 0.041 contains ? significant figures.
3. 13.010 - 0.041 = ? (give answer to correct number of significant figures)
Classify each of the following as an element, compound, solution or heterogeneous mixture and explain your answer.
1. Honey
2. Hydrogen iodide
3. Tea
Classify each of the following as a chemical change or a physical change
1. Clumping of milk upon adding vinegar
2. Ice melts
3. Moisture condenses on cool glass of beverage
Show the full Nuclear symbol including any + or - charge (n), the atomic number (y), the mass number (x) and the correct element symbol (Z) for each element for which the protons, neutrons and electrons are shown - symbol should appear as follows: xZy+/- n
12 protons, 12 neutrons, 10 electrons
Name each of the following chemical compounds. Be sure to name all acids as acids (NOT for instance as binary compounds)
1. H2SO3
2. Ca(NO3)2
3. FeI2
Write the formula for each of the following chemical compounds explaining the answer with appropriate charges and/or prefixes and/or suffixes.
1. Titanium (IV) hydroxide
2. Hydrobromic acid
3. Dichlorine heptoxide