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Chemistry Final exam 2015 practice
Terms in this set (25)
the accepted value for a quantity is 5.67g. If the measured value is 5.89g, what is the percent error?
which is qualitative data: color, pressure, temperature or volume?
Which substance is a mixture: baking soda, gasoline, salt, sugar
Bromine element occurs in the _____state at room temperature: gaseous, liquid, plasma, or solid?
which scientist described an atom made of a solid positively charge substance with electrons dispersed throughout it: Chadwick, Thomson, Rutherford or Bohr?
which one(s) have a mass of 1 amu: electron, proton, proton and neutron, or electron and proton
proton and neutron
which of these has a 5 valence electrons: Boron (B), Rubidium (Rb), Vanadium (V), or Arsenic (As)?
which category of elements have the property of being malleable and ductile: gases, metals, metalloids, or nonmetals?
identify the period and group numbers of the element with the electron configuration. [Ne]3s23p4: period 2, group 4; period 3, group 4;period 3, group 16; period 2, group 16
period 3, group 16
which is the most important characteristic in determining an element's chemical properties: the number of protons and neutrons, which period it is found in, the number of valence electrons it contains, its outermost energy level?
the number of valence electrons it contains
which is true of binary ionic compounds: they consist of only two atoms, they consist of atoms of only two elements, they contain two different anions, they have bonds that share two valence electrons?
they consist of atoms of only two elements
which is the correct formula for the compound Chromium (II) Nitrate: (Cr)2NO3; CR2NO3;CrNo2;Cr (NO3)2?
A compound has the formula X3Y. For every 15 X atoms present in this compound, how many Y atoms are there: 3, 5, 45, 15
which is the correct name for the compound CaClO2: Calcium Chloride, Calcium Chloroxide, Calcium Chlorite, Calcium Chlorate
Which is the correct name for the compound HClO3: hydrogen chlorate, chloric acid, trinitrogen dioxide, dinitrogen trioxide
Identify the type of chemical reaction demonstrated by this equation: KClO3--KCl+O2: decomposition, synthesis, combustion, single replacement
which is the molar mass of the element Calcium: 20g/mol; 40g/mol; 40.078g/mol; 20.180g/mol
Which is the percent composition of bromine int he compound NaBr: 81.6%; 79.9%; 84.1%, 77.7%?
Which compound has a molar mass of 174.3 g/mol: K2SO4; Al(NO3)3; MgCO3; Ca(NO3)2?
how many grams of Fe3O4 are required to react completely with 300 grams of H2? Fe3O4+H2--Fe+H2O 2096g; 1.54g; 8681g; or 37.5g
which is the point at which this substance will boil at normal atmostpheric pressure: 88degrees C, 0.95atm; 100degreesC, 0.95 atm; 110 degrees C, 1.00 atm; or 0 degrees C, 0.18 atm?
110 degrees C, 1.00 atm
Which law describes the proportional relationship between the pressure and volume of a gas: Boyle's Law, Charles's Law, Gay-Lussac's Law, Laurie's Law, Natural Law
At an ocean depth of 10.0m, a diver's lung capacity is 2.40L. The air temperature is 32.0 degrees C and the pressure is 101.30kPa. What is the volume of the diver's lungs at the same depth, at a temperature of 21.0 degrees C and a pressure of 141.20 kPa: 1.12L; 1.66 l; 1.78L; 4.86L
Four liters of gas at atmostpheric pressure is compressed into a 8.85L cylinder. What is the pressure of the compressed gas if its temperature remains constant: 0.15 atm; 0.21 atm; 3.4 atm; 4.7 atm
The pH scale allows scientists to define the acidity of a substance on a scale of: 1-7; 0-14; 0-7; 1-14
What is the most correct description for sodium chloride (NaCl): element, compound, molecular compound, ionic compound, Fred, or polyatomic ion?
Physical way to separate mixtures made of 2 or more pure liquids. It is a purification process where the components of a liquid mixture are vaporized and then condensed and isolated?
What is the molarity of an HCl solution if 50.0 mL is neutralized in a titration by 40. mL of 0.4000 M NaOH?
What type of bonding would be in stainless steel?
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