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12,061 Answered Questions for the topic chemistry

Chemistry

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

Please Help. This question is time sensitive.

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Chemistry

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?

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Chemistry

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

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Chemistry Kinetics Reaction Rates

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

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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 .

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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:

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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.

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Chemistry Stoichiometry

14h

When 70mL of a 2.5M nitric acid solution is reacted with 11g of copper metal, what is the most amount of nitrogen dioxide gas that is able to be produced?

4HNO3+Cu(s) --> 2H2O + Cu(NO3)2 + 2NO2

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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

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Chemistry

15h

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

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Chemistry

15h

How do you determine whether two elements will form an ionic, covalent, or metallic bond?

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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

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Chemistry

16h

The pressure of 1.83 moles of oxygen that occupies 15.5 liters at 69 °C is ____ atmospheres.

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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.

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Chemistry

19h

What is the pH of a 0.280 M solution of trimethylammonium chloride ((CH3CH2)NH3Cl)? Kb=5.6×10^-4 the answer is 5.7 but i need the work shown

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Chemistry Analytical Chemistry

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

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Chemistry Analytical Chemistry

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

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Chemistry Analytical Chemistry

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

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Chemistry Analytical Chemistry

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

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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

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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

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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

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Chemistry

23h

Which ionic compound has highest lattice energy

KBrCaOBaOCrSFePWhich would have highest lattice energy and why?

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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:

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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

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