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12,061 Answered Questions for the topic chemistry

Chemistry

1h

Describe the octet rule and how it applies to chemical bonding.

Please Help. This question is time sensitive.
Chemistry

2h

How would you draw the Lewis Dot Diagrams for elements 21-30?

I am confused about this since elements 21-30 all have 1 or 2 valence electrons. They do not all have the same Lewis Dot diagrams right?
Chemistry

9h

955 grams of water at 25.0 C is heated to 85.5 C. Calculate the amount for Q in Joules?

a.57800 Jb. 242000 Jc. -57800 Jd. -242000 J

10h

Chemistry - kinetics

Describe 2 specific examples of chemical reactions you might experience in everyday life (include the reactants and products) in which being able to control the reaction rate would be beneficial.... more
Chemistry

12h

how to solve this problem

A solution is made by dissolving  of nonelectrolyte solute in  of benzene. Calculate the freezing point,  and boiling point,  of the solution. Constants can be found in the .
Chemistry Organic Chemistry

12h

If possible please help with this question

Show three linkages of the polymer that would result in the following addition polymerization reaction:
Chemistry Organic Chemistry

12h

What type of reaction is this and what is the product?

c) 1-chlorobutane reacts + sodium hydroxide solution --> addition, substitution, elimination etc.
Chemistry

15h

An ionic compound is: (mark all that apply)

a salt held together by a transfer of electrons composed of anions and cations held together by sharing of valence electrons
Chemistry

15h

Which sublevels are full when an atom has a noble gas configuration?

Chemistry

15h

An ionic compound is: (mark all that apply)

a salt held together by a transfer of electrons composed of anions and cations held together by sharing of valence electrons
Chemistry

19h

calculate the mass of a solute

calculate the mass of solute ( in grams) of a 0.107m solution that contains 426.93 ml of water. the solute has a molar mass of 119.73 g/ mole.

19h

PLEASE HELP ASAP

Exactly 500.0 mL of a solution containing 316.2 ppm of Ba(NO3)2 is mixed with 150.0 mL of 0.047 M Al2(SO4)3 solution. (N: 14.0 ; O:16.0; S:32.0; Al:27; Ba:137 g/mol)What mass of solid BaSO4 is... more

19h

PLEASE HELP ASAP

Calculate the pH of the following solutions,0.0040 M benzoic acid (Ka= 6.28x10-5)prepared by adding 100 mL of 0.0500 M NaOH to 50 mL of 0.100 M HOCl (Ka= 3.0x10-8)0.012 M HClO4.please write the... more

19h

PLEASE HELP ASAP

Calculate the concentration of the solution that 40.0 mL of the 22% (w/w) NH3 (17,0 g/mol) solution with a density of 0.870 g/mL is diluted to 300 mL.PLEASE WRITE THE SOLUTION WITH STEPS

19h

Please Help ASAP

Iodine in a sample containing iodine and chlorine ion is converted to the iodate ion adding excess amount of bromine.-3H2O +3Br2 + I - <-----> 6Br‾ + IO3‾ +6H+Then remaining bromine is... more
Chemistry

23h

I can't figure out these chemistry problems

1. The decomposition of reactant A occurs as shown in the reaction below:A (g) → 2B (g) + C (g)The experiment is repeated with the same initial concentration of A, but at several different... more
Chemistry

23h

I need help with my Ap chemistry

The reaction between crystal violet (a complex organic molecule represented by CV+) and sodium hydroxide is as... more
Chemistry

23h

Which would have largest atomic size

Na+Cl-S2-Mg2+P3-I think it would be Cl- since its at the beginning of the periodic table but I am unsure
Chemistry

23h

Which ionic compound has highest lattice energy

KBrCaOBaOCrSFePWhich would have highest lattice energy and why?
Chemistry

23h

Using chemical equations, show how the triprotic acid  ionizes in water. Phases are optional.

Using chemical equations, show how the triprotic acid  ionizes in water. Phases are optional.Ka1:Ka2:Ka3:
Chemistry

23h

What subshells will be available for electrons to occupy

Considering all electrons are in the ground state, for an energy level n=3, what subshells will be available for electrons to occupy for a neutral chromium atom
1 3 4 5 6 7 483

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