Chemistry

Chemistry
roxanavelasco
2021-03-22 16:13:57
Which symbol represents a particle with a total of 10 electrons? (1) N (3) Al (2) N3+ (4) Al3+...
ANSWER
Chemistry
Kerney913
2021-03-22 15:38:42
Which ion is the only negative ion produced by an Arrhenius base in water? (1) NO3– (3) OH– (2) Cl– (4) H–...
ANSWER
Chemistry
ashywebster
2021-03-22 14:04:42
A student completes a titration by adding 12.0 milliliters of NaOH(aq) of unknown concentration to 16.0 milliliters of 0.15 M HCl(aq). What is the m...
ANSWER
Chemistry
kjdewees7
2021-03-22 13:41:12
According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas? (1) The force of attraction between ...
ANSWER
Chemistry
rosebudnelson
2021-03-22 12:54:12
An unsaturated solution is formed when 80. grams of a salt is dissolved in 100. grams of water at 40.°C. This salt could be (1) KCl (3) NaCl (2) K...
ANSWER
Chemistry
mommylittlepandabear
2021-03-22 12:42:27
A student neutralized 16.4 milliliters of HCl by adding 12.7 milliliters of 0.620 M KOH. What was the molarity of the HCl acid? (1) 0.168 M (3) 0.62...
ANSWER
Chemistry
1534367
2021-03-22 11:55:27
Which is most like a scientific model? a. a thermometer b. an element c. an inch d. a map...
ANSWER
Chemistry
BettyeHollack284
2021-03-22 08:59:12
Which compound is an alkyne? (1) C2H2 (3) C4H8 (2) C2H4 (4) C4H10...
ANSWER
Chemistry
D16rox
2021-03-22 08:35:42
why is it important to keep accurate records during an experiment...
ANSWER
Chemistry
AbishaK
2021-03-22 07:36:57
Which compound is a saturated hydrocarbon?(1) hexane (3) hexanol(2) hexene (4) hexanal...
ANSWER
Chemistry
PrincessDrea11
2021-03-22 06:38:12
Matter that is composed of two or more different elements chemically combined in a fixed proportion is classified as (1) a compound (3) a mixture (...
ANSWER
Chemistry
Lingenfelter80
2021-03-22 06:26:27
Under which conditions of temperature and pressure does a sample of neon behave most like an ideal gas? (1) 100 K and 0.25 atm (2) 100 K and 25 atm...
ANSWER
Chemistry
cutesassygirl
2021-03-22 05:04:12
Two different samples decompose when heated. Only one of the samples is soluble in water. Based on this information, these two samples are (1) both ...
ANSWER
Chemistry
Bradcindysmith
2021-03-22 04:05:27
Which potential solution could help a crowded city improve problems with emission levels? a. encourage citizens to burn wood or methane fires at hom...
ANSWER
Chemistry
jharris1821
2021-03-22 03:30:12
Which balanced equation represents a redox reaction? (1) PCl5 ==> PCl3 + Cl2 (2) KOH + HCl ==> KCl + H=O (3) LiBr==> Li+ + Br= (4) Ca2+ + SO42- ...
ANSWER
Chemistry
Ellen271
2021-03-22 03:18:27
Why is a molecule of CO2 nonpolar even though the bonds between the carbon atom and the oxygen atoms are polar? (1) The shape of the CO2 molecule is...
ANSWER
Chemistry
EugenieKnippel21
2021-03-22 02:43:12
What is the half-life and decay mode of Rn-222? (1) 1.91 days and alpha decay (2) 1.91 days and beta decay (3) 3.82 days and alpha decay (4) 3.82...
ANSWER
Chemistry
Rudolf178
2021-03-22 01:20:57
The active form of vitamin D is called ________. A. coenzyme Q10 B. cholesterol C. beta-carotene D. calcitriol...
ANSWER
Chemistry
charleslouis300
2021-03-22 00:10:27
The chemical bond between which two atoms is most polar? (1) C–N (3) S–Cl (2) H–H (4) Si–O...
ANSWER
Chemistry
Dessi01
2021-03-21 23:35:12
An atom of aluminum in the ground state and an atom of gallium in the ground state have the same (1) mass (2) electronegativity (3) total number o...
ANSWER
Chemistry
Kristy144
2021-03-21 23:11:42
Based on Reference Table S, the atoms of which of these elements have the strongest attraction for electrons in a chemical bond? (1) N (3) P (2) Na...
ANSWER
Chemistry
superkid
2021-03-21 22:36:27
According to Reference Table F, which of these compounds is the least soluble in water? (1) K2CO3 (3) Ca3(PO4)2 (2) KC2H3O2 (4) Ca(NO3)2...
ANSWER
Chemistry
MirthaBelfield
2021-03-21 21:49:27
The relatively high boiling point of water is due to water having (1) hydrogen bonding (2) metallic bonding (3) nonpolar covalent bonding (4) str...
ANSWER
Chemistry
julie1975
2021-03-21 21:14:12
The energy released by a nuclear reaction results primarily from the (1) breaking of bonds between atoms (2) formation of bonds between atoms (3) ...
ANSWER
Chemistry
rareruby16
2021-03-21 21:02:27
Types of nuclear reactions include fission, fusion, and (1) single replacement (2) neutralization (3) oxidation-reduction (4) transmutation...
ANSWER