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exam 1

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
how many sig figs in 0.02050   four  
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which of the following is metal?   K- Potassium  
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the measurement 0.0000043 can expressed in scientific notation as:   4.3 time 10 to the neg 6  
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you want to give a patient 0.125 g of ampicilan. the liq. suspension of the drug is 250 mg per 5.0 mL of suspensions. how many mL of the suspension is required?   2.5 mL  
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carrots are 0.79 cents a pound. What is the cost of 1.2 kg of carrots?   2.10  
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Isotopes are atoms of the same element that have:   the same atomic numbers but diff number of neutrons  
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How many mL of solution are there in 0.0250L?   25.0 mL  
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which of the following gives the correct numbers of protons, neutrons, and electrons in a neutral atom of 118Sn50?   50 protons, 68 neutrons, 50 electrons  
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which element would have physical and chemical properties similar to magnesium?   Ca  
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What is the volume of 25.0 g of ethanol, which has a density of 0.79 g/mL   31.6 ml  
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A nugget of gold with a mass of 521 g is added to 50.0 mL of water. The water level rises to a volume of 77.0 mL. what is the density of the gold?   19.3 g/ml  
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If a scuba divers lungs have a normal capacity of 4.9 L at sea level (1 atm)what would be the volume of her lungs at a depth of 50 ft, if the pressure is 975 mmHg?   3.8L  
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Which subatomic particle contributes the least to the mass of the atom?   the electron  
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which of the following contains only covalent bonds?   PCl3  
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Calculate the molar mass of Mg3(PO4)2   mg- 3(24) + P 2(30( +O 8(16) =262.9  
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what is the symbol for an ion that has 26 protons and 23 electron   Fe3+  
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How many electrons will aluminum gain or lose when it forms an ion?   lose 3  
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The correct formula for the molecule formed from Ca and N is:   Ca3N2  
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In a molecule with covalent bonding:   atoms are held together by sharing electrons  
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how many valence electrons does carbon have:   four  
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Sodium Sulfate   Na2(SO4)  
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Calcium Carbonate   CaCO3  
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Potassium nitrate   K(NO3)  
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Sulfur Trioxide   SO3  
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975 micro-grams is how many cm?   .0975  
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200 mL is how many dL?   2 dL  
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a prescription for nifedipine:   2 capsules  
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given the molar mass of glucose C6H12)6 is 180.0 g/mol. whats the number of moles in 10.0 g glucose?   0.0555 moles  
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what is the number of grams in .50 moles of glucose?   90 g of glucose in .50 moles.  
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Created by: sarah.rushton298
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