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Bekah
Questions and answers by
Bekah
Questions (15)
What is the variable being tested in an experiment called?
3 answers
837 views
The number of trophic levels that can be maintained in an ecosystem is limited by:
a. a gain in population size b. the loss of
3 answers
768 views
A 8.00 M solution of hydrochloric acid is provided. You need to make 25.0 mL of a 0.490 M HCl solution. What volume, in mL, of
1 answer
375 views
What is the concentration, in units of molarity, of a 350 mL solution containing 0.298 moles of sodium chloride in water?
3 answers
451 views
Iron (II) ions can be precipitated from the following reaction:
4Fe(OH)+(aq) + 4OH-(aq) + O2(g) + 2H2O(l) --> 4Fe(OH)3(s) How
1 answer
472 views
How many grams of solute are needed to prepare each of the following solutions?
A. 1.000 L of 0.180 M NaCl B. 250.0 mL of 0.150 M
3 answers
1,432 views
Zinc, copper, lead, and mercury ions are toxic to Atlantic salmon at concentrations of 6.42 times 10 to the -2 mM, 7.16 times 10
2 answers
587 views
Calculate the concentrations of the following solutions, assuming the volumes are exact measurements:
a. 18.64g of sodium
2 answers
503 views
How many milliliters of 0.100 M HNO3 are needed to neutralize the following solutions?
A. 45.0 mL of 0.667 M KOH B. 58.5 mL of
7 answers
8,429 views
Write formation reactions for the following. (You must include the states of matter for each atom or compound)
A. Ca(NO3)2 (s) B.
4 answers
7,197 views
when a 0.702g sample of a mixture of volatile hydrocarbons is burned in a bomb calorimeter with a heat capacity of 4287 J/C, the
4 answers
1,270 views
is this true:Introductory participial phrases and adverb clauses are set off from main clauses by commas.
4 answers
1,524 views
a man's age today is 2 years more than three times the age his son will be 5 years from now. let a represent the son's age
5 answers
1,369 views
Two workers are sliding a 300 kg crate across the floor. One worker pushes forward on the crate with a force of 380 N while the
1 answer
199 views
A 1000 kg car traveling at a speed of 40 m/s skids to a halt on wet concrete where mk = 0.60. How long are the skid marks?
1 answer
108 views
Answers (14)
I already did this and the correct answer is C.
What in the world...
The correct answers are: 1.) C 2.) A 3.) C 4.) D 5.) A 6.) B 7.) A 8.) B
144/24 = 6
A trick is to just look for the element in the equation that is paired on one side, but not on the other. This being said, the following answers are correct. Redox: 2CO+O2 = 2CO2 Zn+CuCl2 = ZnCl2+Cu Non-Redox: SO3+H2O = H2SO4 HCl+NaOH = H2O +NaCl
They cannot explode like a nuclear bomb, that's for sure.
A and D are right.
A is the correct answer.
Solubility and Precipitation: 1. Alkali Metal Cations, ammonium cations= Soluble. 2. Nitrate Anions, Acetate Anions= Soluble. 3. Halogen anions= Soluble...except: Ag+, Cu+, Hg2 +2, and Pb+2. 4. Sulfate Anions= Soluble...except: Ba +2, Ca+2, Hg2 +2, Pb+2,
Step 1: Eric = 1/2 of Dans; Eric + Dan = 18 Step 2: 12 + 6 = 18 Step 3: Eric has to be 6 because half of 12 is 6 and when you add them together you 18. Step 4: Equation- Part A: D = 12; E = 1/2D; T= 18. Equation- Part B: E + D = T so... 1/2D + D = 18!!!!
R because the others all have set limitations. R is the only one that makes sense! Since numbers can go on forever that means numbers greater than 18 would be infinite!
-72/14*14/-72 (cross multiply) ?
the info of about the circle is irrelevent. Since the triangel is isosceles than that means another side of it is 4r. Find the missing side then use the area of a triangle formula!
First off, it is one thing to ask for assistance because you do not understand something. It is a completely different thing for someone to give you all of the answers. It really is your loss though, because instead of getting the reasoning why and
