Chemistry

Chemistry
Baetacat
2021-03-23 23:41:00
A calcium-rich nonfoliated rock that is often associated with economically valuable mineral deposits is _____. a. skarn b. marble c. phyllite d. ...
ANSWER
Chemistry
nicholashorzew
2021-03-23 23:05:45
What is the most democratic feature of the original Constitution of the United States? (1) role given to the electoral college in presidential ele...
ANSWER
Chemistry
Sones85
2021-03-23 20:44:45
Under which conditions of temperature and pressure does carbon dioxide gas behave most like an ideal gas? (1) low temperature and low pressure (2) ...
ANSWER
Chemistry
msredx
2021-03-23 20:21:15
Which formula represents a polar molecule? (1) H2 (3) CO2 (2) H2O (4) CCl4...
ANSWER
Chemistry
ssmom22
2021-03-23 18:59:00
Which compound when dissolved in water is an Arrhenius acid? (1) CH3OH (3) NaCl (2) HCl (4) NaOH...
ANSWER
Chemistry
jena1274
2021-03-23 18:12:00
If 5.0 milliliters of a 0.20 M HCl solution is required to neutralize exactly10. milliliters of NaOH, what is the concentration of the base?(1) 0.10 ...
ANSWER
Chemistry
yamesse
2021-03-23 17:25:00
Which atoms will bond when valence electrons are transferred from one atom to the other? (1) O and Se (3) O and H (2) O and Sr (4) O and P...
ANSWER
Chemistry
catwoot22
2021-03-23 17:13:15
Which element is liquid at 305K and 1.0 atm?(1) magnesium (2) fluorine (3) gallium (4) iodine...
ANSWER
Chemistry
icreepmyselfout
2021-03-23 16:02:45
Which statement describes the general trends in electronegativity and metallic properties as the elements in Period 2 are considered in order of inc...
ANSWER
Chemistry
Kent287
2021-03-23 15:39:15
An ionic bond can be formed when one or more electrons are(1) equally shared by two atoms(2) unequally shared by two atoms(3) transferred from the nu...
ANSWER
Chemistry
mikog
2021-03-23 15:15:45
Which process results in a chemical change? (1) tearing tin foil (2) melting an iron bar (3) crushing an aluminum can (4) burning magnesium ribbo...
ANSWER
Chemistry
bryanscr7
2021-03-23 14:17:00
If an equation is balanced properly, both sides of the equation must have the same number of (1) atoms (2) coefficients (3) molecules (4) moles ...
ANSWER
Chemistry
ecarthan25
2021-03-23 14:05:15
What is the mass of a sample of iron if that sample lost 2300J of heat energy when it cooled from 80 oC to 30°C? The specific heat of iron is 0.449 ...
ANSWER
Chemistry
Daniellejade25
2021-03-23 13:41:45
Which describes a chemical property of silicon?(1) Silicon has a blue-gray color (2) Silicon is a brittle solid at 20oC (3) Silicon melts at 1414oC...
ANSWER
Chemistry
RosalynPicknell640
2021-03-23 13:30:00
Calculate the number of kg, g, and mg in 1/4 lb of margarine...
ANSWER
Chemistry
dianw
2021-03-23 12:19:30
Which statement explains why increasing the temperature increases the rate of a chemical reaction, while other conditions remain the same? (1) The...
ANSWER
Chemistry
Maryjo144
2021-03-23 10:45:30
When a sample of gas is cooled in a sealed, rigid container, the pressure the gas exerts on the walls of the container will decrease because the gas ...
ANSWER
Chemistry
romankristal042
2021-03-23 09:46:45
During a nuclear reaction, mass is converted into(1) charge (2) energy (3) isomers (4) volume...
ANSWER
Chemistry
Canul129
2021-03-23 09:35:00
210.0 °C a gas has a volume of 8.00 L. What is the volume of this gas at -23.0°C?...
ANSWER
Chemistry
grissomaltrea
2021-03-23 09:23:15
The bright-line spectrum of sodium is produced when energy is (1) absorbed as electrons move from higher to lower electron shells (2) absorbed as e...
ANSWER
Chemistry
Myra1
2021-03-23 08:48:00
A sample of mercury is heated from 25.5 °C to 52.5 °C. In the process, 3050J of heat are absorbed. What mass of mercury was in the sample? The sp...
ANSWER
Chemistry
b898kaz
2021-03-23 06:03:30
The laboratory process in which the volume of a solution of known concentration is used to determine the concentration of another solution is called ...
ANSWER
Chemistry
chelseahobson12
2021-03-23 05:16:30
What is the empirical formula of a compound with the molecular formula N2O4? (1) NO (3) N2O (2) NO2 (4) N2O3...
ANSWER
Chemistry
ilonatesalonika
2021-03-23 02:20:15
Particles are arranged in a crystal structure in a sample of (1) H2(g) (3) Ar(g) (2) Br2(l) (4) Ag(s)...
ANSWER
Chemistry
melannie1226
2021-03-23 00:34:30
The correct chemical formula for iron(II) sulfide is (1) FeS (3) FeSO4 (2) Fe2S3 (4) Fe2(SO4)3...
ANSWER