Chemistry

Chemistry
realtreequeen11
2021-03-20 09:19:15
275 mm = _____ cm 2750 27500 27.5 2.75...
ANSWER
Chemistry
mareoli
2021-03-20 09:07:30
A voltaic cell spontaneously converts chemical energy to (1) electrical energy (3) mechanical energy (2) geothermal energy (4) nuclear energy...
ANSWER
Chemistry
Garfield987
2021-03-20 06:34:45
Given the balanced equation representing a reaction: NH3(g) + H2O(l) ==>NH4+(aq) + OH-(aq) According to one acid-base theory, the NH3(g) molecules ...
ANSWER
Chemistry
clu37
2021-03-20 04:25:30
Hydrocarbons are compounds that contain (1) carbon, only (2) carbon and hydrogen, only (3) carbon, hydrogen, and oxygen, only (4) carbon, hydroge...
ANSWER
Chemistry
Furubotten592
2021-03-20 03:26:45
elements within a period have the same number of what?...
ANSWER
Chemistry
Ruiter473
2021-03-20 03:15:00
As you go down the periodic table, the atomic radius of elements do what?...
ANSWER
Chemistry
Jacobgoldsborou
2021-03-20 03:03:15
Given the balanced equation representing a reaction: Mg(s) + Ni2+(aq) ==> Mg2+(aq) + Ni(s) What is the total number of moles of electrons lost by M...
ANSWER
Chemistry
josi
2021-03-20 01:52:45
What is the octet rule...
ANSWER
Chemistry
Roberto217
2021-03-20 01:17:30
Which equation shows conservation of mass and charge? (1) NH4Br ==> NH3 + Br2 (2) 2Mg + Fe3+ ==>Mg2+ + 3Fe (3) H2SO4 + LiOH ==> Li2SO4 + H2O (4) ...
ANSWER
Chemistry
lizhull22
2021-03-20 00:07:00
Which is the most common nutrient deficiency in the world? a. iron b. zinc c. copper d. calcium...
ANSWER
Chemistry
Dkim2010
2021-03-19 21:57:45
Formula A: CH3 Formula B: C2H6 Given the two formulas representing the same compound: Which statement describes these formulas? (1) Formulas A an...
ANSWER
Chemistry
Batts561
2021-03-19 21:46:00
Which statement explains why Br2 is a liquid at STP and I2 is a solid at STP?(1) Molecules of Br2 are polar, and molecules of I2 are nonpolar. (2) M...
ANSWER
Chemistry
Jaayjaay
2021-03-19 21:34:15
In chemical reactions, there is a conservation of(1) energy, volume and mass (2) energy, volume and charge (3) energy, charge and mass (4) energy,...
ANSWER
Chemistry
Brande895
2021-03-19 20:59:00
List the four components of natural gas in order of increasing strength of intermolecular forces....
ANSWER
Chemistry
mkkirschke
2021-03-19 18:38:00
A sample of matter must be copper if(1) each atom in the sample has 29 protons (2) atoms in the sample react with oxygen (3) the sample melts at 17...
ANSWER
Chemistry
SalenaWineberg630
2021-03-19 16:05:15
why do soluble salts have to be made by titration, using an indicator?...
ANSWER
Chemistry
GeorgiaIndovina718
2021-03-19 15:30:00
Compared to the atoms of a nonmetal in Period 3, the atoms of metals in Period 3 have(1) fewer valence electrons (2) more valence electrons (3) few...
ANSWER
Chemistry
Mierzwinski144
2021-03-19 13:09:00
One atom of silicon can properly be combined in a compound with a. three atoms of hydrogen. b. four atoms of calcium. c. two atoms of oxygen. d. ...
ANSWER
Chemistry
EvelynBerey
2021-03-19 12:10:15
what sort of element reacts with oxygen?...
ANSWER
Chemistry
Gallishaw30
2021-03-19 10:59:45
The gram-formula mass of NO2 is defined as the mass of (1) one mole of NO2 (2) one molecule of NO2 (3) two moles of NO (4) two molecules of NO...
ANSWER
Chemistry
andresanime
2021-03-19 09:49:15
does vinegar melt ice the fastest...
ANSWER
Chemistry
chazzy5678
2021-03-19 08:50:30
How many valence electrons does copper contain?...
ANSWER
Chemistry
jazzy24
2021-03-19 03:09:45
Which element is a metalloid? 1. Al 2. Ar 3. As 4. Aa...
ANSWER
Chemistry
Dmeghani
2021-03-19 02:58:00
what is the property of water...
ANSWER
Chemistry
Lonna459
2021-03-19 00:13:30
Which radioisotope is used to treat thyroid disorders? (1) Co-60 (3) C-14 (2) I-131 (4) U-238...
ANSWER