Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
chem final
exam 1
| Term | Definition |
|---|---|
| how many sig figs in 0.02050 | four |
| which of the following is metal? | K- Potassium |
| the measurement 0.0000043 can expressed in scientific notation as: | 4.3 time 10 to the neg 6 |
| 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 |
| carrots are 0.79 cents a pound. What is the cost of 1.2 kg of carrots? | 2.10 |
| Isotopes are atoms of the same element that have: | the same atomic numbers but diff number of neutrons |
| How many mL of solution are there in 0.0250L? | 25.0 mL |
| 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 |
| which element would have physical and chemical properties similar to magnesium? | Ca |
| What is the volume of 25.0 g of ethanol, which has a density of 0.79 g/mL | 31.6 ml |
| 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 |
| 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 |
| Which subatomic particle contributes the least to the mass of the atom? | the electron |
| which of the following contains only covalent bonds? | PCl3 |
| Calculate the molar mass of Mg3(PO4)2 | mg- 3(24) + P 2(30( +O 8(16) =262.9 |
| what is the symbol for an ion that has 26 protons and 23 electron | Fe3+ |
| How many electrons will aluminum gain or lose when it forms an ion? | lose 3 |
| The correct formula for the molecule formed from Ca and N is: | Ca3N2 |
| In a molecule with covalent bonding: | atoms are held together by sharing electrons |
| how many valence electrons does carbon have: | four |
| Sodium Sulfate | Na2(SO4) |
| Calcium Carbonate | CaCO3 |
| Potassium nitrate | K(NO3) |
| Sulfur Trioxide | SO3 |
| 975 micro-grams is how many cm? | .0975 |
| 200 mL is how many dL? | 2 dL |
| a prescription for nifedipine: | 2 capsules |
| 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 |
| what is the number of grams in .50 moles of glucose? | 90 g of glucose in .50 moles. |
Created by:
sarah.rushton298
Popular Chemistry sets