Chemistry

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Indicate which is larger in each of the following two sets.(I) Cr2+ or Cr (II)N2- or N Started by 09madisonrousseau09	1 Replies 37 Views	Feb 15, 2020 by Bsand8
Ozone is a a(n) ________ of oxygen. A) isotope B) allotrope C) precursor D) peroxide E) free ... Started by 09madisonrousseau09	1 Replies 62 Views	Aug 27, 2018 by Andromeda18
How many grams of NaCl are required to make 250.0 mL of a 3.000 mol L-1 solution? Started by 09madisonrousseau09	1 Replies 64 Views	Nov 18, 2019 by jessicaduplan
According to the collision theory in gaseous molecules, collision frequency is ________ and the rate ... Started by 09madisonrousseau09	1 Replies 77 Views	Jul 8, 2021 by matt
How many moles of hydrogen sulfide are contained in a 39.3-g sample of this gas? Started by 123654777	1 Replies 49 Views	Mar 21, 2021 by dantucker
Electromagnetic radiation with a wavelength of 531 nm appears as green light to the human eye. The ... Started by 123654777	1 Replies 28 Views	Jul 8, 2021 by efwsefaw
This element reacts with hydrogen to produce a gas with the formula HX. When dissolved in water, HX ... Started by 123654777	1 Replies 44 Views	Aug 27, 2018 by nguyenhoanhat
Both products and reactants will be present in an equilibrium reaction unless K is very small or very large. Started by 123654777	1 Replies 28 Views	Jul 8, 2021 by memslove
When 70 mL of 0.18 M NH4Cl is added to 70 mL of 0.18 M NH3, relative to the pH of the 0.10 M NH3 ... Started by 123654777	1 Replies 117 Views	Feb 15, 2020 by asdfasdf
Helium-3, an electron, a neutron, and a proton have masses of 3.016029 amu, 5.486 10-4 amu, 1.00866 ... Started by 123654777	1 Replies 79 Views	Feb 15, 2020 by Beatricemm
A 3.50-g sample of rice is burned in a bomb calorimeter with a heat capacity of 8.29 kJ/C. The ... Started by 123654777	2 Replies 544 Views	Dec 13, 2021 by Xy Rain Kiryu
How many grams of ammonia are consumed if 45.0 g of NO are formed in a 100 yield? NH3 + O2 NO + ... Started by 123654777	1 Replies 27 Views	Aug 27, 2018 by nanny
If 75.0 g of water at 30.0C absorbs 900 calories, the new temperature will be A) 18.0C. B) ... Started by 123654777	1 Replies 32 Views	Aug 27, 2018 by Sierray
Proton acceptor is an abbreviated definition of: Started by 123654777	1 Replies 11 Views	Jul 8, 2021 by Danny Ewald
Hydrocarbons with a carbon-carbon double bond are known as ________. A) alkanes B) alkenes C) ... Started by 123654777	1 Replies 53 Views	Aug 27, 2018 by Tabitha_2016
The IUPAC name for the alkane shown below is ________.CH3\| CH3CHCH2CH2CH2CH3 Started by 123654777	1 Replies 236 Views	Feb 15, 2020 by yifu223
Why would a chain-reaction control substance that loses neutron-absorbing power as its temperature ... Started by 123654777	1 Replies 57 Views	Aug 27, 2018 by paavo
Which of the following statements is true concerning the electrochemical cell depicted below?Mg \| ... Started by 123654777	1 Replies 42 Views	Mar 21, 2021 by karmakat49
How many millilitres of 0.200 mol L-1 FeCl3(aq) are needed to react with an excess of Na2S(aq) to ... Started by 123654777	1 Replies 33 Views	Jul 8, 2021 by jxjsniuniu
Calculate the activation energy, Ea, for a reaction with a frequency factor, A, of 9.3 1010 s-1 and ... Started by 123654777	7 Replies 603 Views	Jun 30, 2022 by Alisha Sasha
Which of the following equilibria represents the second ionization step of H3PO4? Started by 123654777	1 Replies 99 Views	Nov 18, 2019 by vboyd24
The gap between two brain cells is 2.0 10-3 nm. How many meters is this? A) 2.0 10-12 m B) 2.0 ... Started by 123654777	1 Replies 170 Views	Aug 27, 2018 by mtmmmmmk
What is the chemical formula for cesium bicarbonate? Started by 123654777	1 Replies 34 Views	Feb 15, 2020 by Kimmy
How many grams of H3PO4 are in 265 mL of a 1.50 mol L-1 solution of H3PO4? Started by 123654777	2 Replies 251 Views	Feb 23, 2020 by Olivier Edouard
Which process releases energy? A) bond formation B) bond breaking C) both A and B D) none of ... Started by 123654777	1 Replies 61 Views	Aug 27, 2018 by snackralk