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Katherine
Questions and answers by visitors named
Katherine
Questions (390)
The voltage generated by the zinc concentration cell described by,
Zn(s)|Zn2+ (aq, 0.100 M)||Zn2+ (aq, ____ M)|Zn(s) is 24.0 mV
5 answers
18,692 views
Indicate the number of equivalents in each of the following:
4mol Mg2+ 0.1mol H+ 2mol Cl- 3mol Fe3+
5 answers
10,255 views
What is the maximum value of the function y= 18/x^2-9 over the interval -3<x<3?
A. 0 B. 2 C. -2 D. Infinity
4 answers
1,057 views
an empty rectangle tank with a base area of 2400 cm^2 is filed with water from 2 taps. one tap can fill the tank with 12L of
4 answers
2,945 views
60cm3 of hydrogen diffused through a porous membrane in 10minutes.The same volume of gas G diffused through the same membrane in
4 answers
1,942 views
In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial temperature of the
5 answers
17,269 views
The ratio of the number of postcards john had to the number of postcards Zachary ha d was 4:9. Zachary had 45 more postcards
5 answers
2,740 views
Shelly compared the number of oak trees to the number of maple trees as part of a study about hardwood trees in a woodlot. She
26 answers
11,797 views
Why is it important to examine the unnumbered marks on a graduated cylinder before making a reading between the unnumbered
3 answers
1,109 views
i am having trouble on solving fractional equations such as:
2 3 7 ______ + _____ = ______________ x+3 x+4 x^2 +7x+12 factor the
1 answer
483 views
Who were the mummy-shaped figures that worked in the after
life's fields for a mummy?
2 answers
503 views
how do i do this?
given: m//n g//h Prove: angle 4 congruent to angle 16
7 answers
495 views
I am writing a report for my current events class about women's issues. I am not allowed to use Wikipedia for my resources. Can
3 answers
667 views
What are some inequalities in education between men and women?
1 answer
375 views
Are there any inequalities between men and women in the armed forces?
1 answer
374 views
How do each of the eight strands of social studies tie into the times and life of Christopher Columbus?
3 answers
490 views
find the values of a and b given that matrix A=
[a -4 -6] [-8 5 7] [-5 3 4] is the inverse of matrix B = [1 2 -2] [3 b 1] [-1 1
1 answer
453 views
How did the Cotton Gin effect slavery?
9 answers
1,001 views
So here's the problem:
6a^-2 + 9a^2 all over 3a^-2 The answer is suppose to be 2 + 3a^4 I keep getting the answer as 5. Can you
2 answers
984 views
Please help me if you have read Jodi Picoult's latest book, Handle with Care. I'm doing a post card on it, so any information or
1 answer
475 views
Given the following equations:
2 H2 (g) + O2 (g)--> 2 H2O (l) deltaH = -571.6 kJ N2 (g) + O2 (g)-->2 NO (g) deltaH = +180.5 kJ N2
3 answers
1,873 views
The kinetic energy of a rolling billiard ball is given by {\rm{KE}} = 1/2\,mv^2 . Suppose a 0.17-{\rm kg} billiard ball is
4 answers
1,521 views
When 1 mol of a gas burns at constant pressure, it produces 2424 J of heat and does 6 kJ of work.
How do i calculate delta E for
4 answers
1,626 views
how much silver nitrate must be measured to yield 1.00g silver?
2 answers
1,037 views
A microwave oven operates at 2.40 GHz. What is the wavelength of the radiation produced by this appliance?
I got 1.25*10^-10.
3 answers
1,059 views
A salesperson bought a caase of pens.On Monday, he sold 1/2 of the pens.On Tuesady, he sold 30 more.On Wednesday, he sold 1/3 of
4 answers
1,564 views
You buy a belt for $10 and some socks.Each pair of socks cost $3.The total shipping cost $3.What is the total cost if you buy 11
2 answers
502 views
a true or false test has 5 questions. what is the probability of guessing exactly four out of the five answers correstly.
4 answers
1,566 views
a dog owner has 200ft of fencing and wants to enclose the greatest possible rectangular area for her dog .what dimension should
2 answers
669 views
suppose a license plate contains 4 digits.the probability of plate number having an even or an odd digit is the same.what is the
2 answers
692 views
start with 1, multiply by 2. then multiply the result by 3.then continue to alternate multiplying by 2 and by 3.what is the ones
4 answers
614 views
your aunt is building a garden in her backyard.she has 90ft of fencing to surroud it.if she wants the lenght to be 15 ft onger
2 answers
633 views
your cat is expecting a litter of kitten.suppose the probability of a male kitten is 1/2.what is the probabilty that a litter of
3 answers
690 views
your cat is expecting a litter of kitten.suppose the probability of a male kitten is 1/2.what is the probabilty that a litter of
2 answers
587 views
your cat is expecting a litter of kitten.suppose the probability of a male kitten is 1/2.what is the probabilty that a litter of
1 answer
437 views
Tom,Ted,Tony,Terry worked together on a job.The job paid $500.Each boy was paid according to the amount of work he contributed
2 answers
963 views
Tom,Ted,Tony,Terry worked together on a job.The job paid $500.Each boy was paid according to the amount of work he contributed
3 answers
707 views
i don't get it ....Tom,Ted,Tony,Terry worked together on a job.The job paid $500.Each boy was paid according to the amount of
3 answers
662 views
all i get is that tony and ted earned 280 and that ted and tom have 260 and ted and terry go 220 i undersatnd but how do i get
2 answers
496 views
so it would be like 500 divided by 140 for ted and tony ..... 120 because of ted and tom but wait i think i am doing this wrong
2 answers
487 views
still don't get it
1 answer
290 views
120/500 i think
1 answer
241 views
since 120/500 is equal to 100 that means ...............i still don't get it......... please..... i need help.can you at least
2 answers
511 views
but why does 120/500 = 0.24 what did u do to it
3 answers
484 views
k i did it i got it so know what,\....... wait is this the percentage for ted or tony
1 answer
309 views
k i did it i got it so know what...... wait is this the percentage for ted or tony
1 answer
277 views
Which of the following in NOT a physical or chemical change?
A)crushing B)weighing C)melting D)passing electric current
1 answer
419 views
Why does a helium-filled balloon float up when it is released?
3 answers
385 views
Which of the following is NOT true about compounds?
A) compounds join in specific ratios according to their masses B) the mass
2 answers
559 views
El sueño americano de Esperanza es fuerte porque ella tiene una vida difícil y aprende crear su identidad con los recuerdos de
3 answers
536 views
What can particles in solution NOT do because ther are so small
2 answers
804 views
hey i need help[ filling out this sentence.....
Solubility is dependent on_______________ and_____________. plese help me thank
1 answer
309 views
what are three ways to make a sugar cube dissolve more quickly in water
3 answers
983 views
Which of the following does NOT describe a suspension?
A)particles are soluble B)particles settle out over time C)particles can
3 answers
1,399 views
What is the differnce between collids and suspension?
2 answers
820 views
What are alloys in science? i forgot
1 answer
369 views
54m=___cm..please help me refresh my memory on this i forgot how to change this sentence 54 m =___ cm
1 answer
303 views
90,050mL=____L please help i forgot how to do
3 answers
350 views
620m=___km
900km=___m ___cm=13km ____km=562,300cm
3 answers
694 views
thanks mrs.sue
4 answers
501 views
thanks bob and nathon
1 answer
250 views
1)Compare the properties of metals nonmetals and metolliods?
2)Why can elements and compound be considered pure substance? 3)What
1 answer
381 views
1)Compare the properties of metals nonmetals and metolliods?
2)Why can elements and compound be considered pure substance? 3)What
1 answer
385 views
1)Compare the properties of metals nonmetals and metolliods?
2)Why can elements and compound be considered pure substance? 3)What
2 answers
1,292 views
10 things you are thankful for
4 answers
281 views
what are external and internal conflicts
1 answer
414 views
thank u mrs sue
1 answer
457 views
by the way what subject do u teach
1 answer
289 views
from what state
1 answer
271 views
Our class planned a holiday party for disadvantaged kids.Some of us baked cookies for the party.On the day of the party,we found
2 answers
595 views
Our class planned a holiday party for disadvantaged kids.Some of us baked cookies for the party.On the day of the party,we found
4 answers
1,270 views
but mrs sue can do the first 2 numbers so that i can finish cause i don't get it
3 answers
484 views
ok i got the multiples of 7 so what do i do next ...Our class planned a holiday party for disadvantaged kids.Some of us baked
4 answers
1,624 views
still don't get it.....Our class planned a holiday party for disadvantaged kids.Some of us baked cookies for the party.On the
2 answers
637 views
i still don't get it ...Our class planned a holiday party for disadvantaged kids.Some of us baked cookies for the party.On the
2 answers
482 views
I have finals coming up in a week and a half. I know I should have started studying earlier, but I just had an exam in my chem
2 answers
597 views
how is the periodic like a calendar
1 answer
340 views
how is the periodic table like a calendar
1 answer
373 views
that helps alot
1 answer
236 views
okay ..:(
1 answer
196 views
A flying saucer filled with space aliens landed in my front yard! After the entire crew had filed out of their spaceship, I
7 answers
554 views
thanks know i no what to do
1 answer
217 views
which electrons in an atom make chemical bonds? why
2 answers
548 views
how can the periodic table help you determine the number of valence electrons?
2 answers
991 views
why is it uncommon for noble gases to form chemical bonds?
1 answer
383 views
you have one penny one nickel one dime and one quarter. how many different amounts of money can you make using one or more of
4 answers
747 views
how many different rectangles are there with an area of 36cm squared if the side lengh of each in centimeters are whole numbers
3 answers
348 views
do you think all horses output exactly 1 horsepower and why ...please...help...me:(
1 answer
381 views
do you think all horses output exactly 1 horsepower and why ...please...help...me:( :(
1 answer
462 views
wait mrs.sue i don't get it...what do u mean????
1 answer
444 views
yes i read
1 answer
325 views
yes i got it ...srry but after you told me about the website it came up..what i mean is that your answer came first then the
2 answers
530 views
give an example of how metallic bonding allows metals to conduct electric current..please..help..me..:(
3 answers
490 views
every row and column contains the same numbers and the same math signs, but they are arranged in a different order each time.
2 answers
599 views
every row and column contains the same numbers and the same math signs, but they are arranged in a different order each time.
4 answers
1,215 views
every row and column contains the same numbers and the same math signs, but they are arranged in a different order each time.
3 answers
577 views
every row and column contains the same numbers and the same math signs, but they are arranged in a different order each time.
2 answers
947 views
thanks that helps:):):)
1 answer
213 views
where do electrons float
1 answer
285 views
list and explain the 3 types of bonds..please help me...:(
1 answer
297 views
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