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corey
Questions and answers by visitors named
corey
Questions (61)
First grade math Tell the Rule? Group 1 3 flowers w/4 petals each Group 2 3 flowers w/five petals each in triangle?
7 answers
asked by
corey
5,066 views
How many moles of solid Ba(NO3)2 should be added to 300 ml of .2 M Fe(NO3)3 to increase the concentration of NO3- ion to 1 M?
4 answers
6,414 views
What is the finaly concentration of barium ions, Ba2+, in soulution with 100 ml of .1 M BaCl2 is mixed with 100ml of .05M H2SO4?
5 answers
3,678 views
5Fe(2+ charge) + MnO4(-1 charge) +8H(1+ charge) -> 5Fe(3+ charge) + Mn(2+ charge) + 4H2O
In a titration experiment based on the
4 answers
664 views
A 1.0 L sample of an aqueous solution contains .1 mol of NaCl and .1 mole of CaCl2. What is the minimum number of moles of AgNO3
4 answers
3,657 views
It requires 30ml of .5M H3PO4 to titrate 45ml of Ca(OH)2 to the equivalence point. What is the M of the base?
1 answer
385 views
The following problems deal with REDOX: identify the oxidation numbers, etc.
a) KMnO4 Mn b)Fe(NO3)2 Fe c)NO2 O
1 answer
361 views
A 2.3g sample of MgX is reacted with NaOH. The Mg(OH)2 precipitate had a mass of 1.8g. What is the % of Mg in the original
1 answer
379 views
Determine a compound that will precipitate the (Hg2)^2+ in Hg2X2(soluble).
2 answers
553 views
if you have Ca(NO3)2 times xH2O do u count the Hydrate when looking for the mass % of Ca
1 answer
391 views
H2+I2->2HI
If 3 moles of H2, I2, and HI are in a 3L flask, what will be the equilibrium amount of each. Kc=5 The answer is H2=
3 answers
415 views
What is the hydroxide concentration if the hydronium is .03 M?
2 answers
524 views
There are 48 small gift bags. Each bag can hold 1 toy and 6 stickers. If an equal number of stickers are put in each bag, how
2 answers
487 views
Find the grams of NaF added to 300ml of .2M HF to create a buffer with pH=3.5.
2 answers
565 views
Find the grams of NaF added to 300ml of .2M HF to create a buffer with pH=3.5.
7 answers
560 views
How do you factor out perfect square trinomials?
1 answer
334 views
Can you give a step by step example of how to factor a perfect square trinomial? Please :)
1 answer
362 views
What if the last term has a square root that is a big, long decimal? you wouldn't use the decimal, would you?
3 answers
344 views
the speed of light is about 3.00 x 10^8 m/s. convert this figure to miles per hour
4 answers
2,610 views
A student claims that the equation has no solution, since the square root of a negative number does not exist. Why is this
3 answers
421 views
1) A spherical surface completely surrounds a collection of charges. Find the electric flux through the surface if the
3 answers
1,079 views
A hydraulic jack in a gas station lifts a 900kg car a distance of .25cm
When a force of 150N pushes a piston through a distance
1 answer
877 views
Part 2: Now it’s time to make the guest list! Figure out how many guests you will have at your party, and how much it will
3 answers
1,046 views
Part 2: Now it’s time to make the guest list! Figure out how many guests you will have at your party, and how much it will
1 answer
911 views
can u calculate the number of moles 0.5g of H?
1 answer
257 views
How did the Revolution affect religion in America?
1 answer
381 views
Write your own journal entry from the perspective of a member of Bradford's colony. What do you think of these unruly pirates?
1 answer
470 views
identify four key milestones in the development of cognitive psychology as a discipline?
1 answer
396 views
The freshman class is building a float for homecoming.One side of the float has a shape of a parallelogram with base of 12' and
3 answers
492 views
A car license plate consists of 6 characters. The first 3 characters are letters excluding I, O, Q and U. The last 3 characters
4 answers
4,121 views
A car license plate consists of 6 characters. The first 2 characters are any letter. The last 4 characters are odd numbers from
4 answers
557 views
There are 6 boys and 8 girls in a group of students. Calculate the number of ways that a president, vice-president and treasurer
5 answers
935 views
There are 6 boys and 8 girls in a group of students. Calculate the number of ways that a committee of 3 students which has at
4 answers
489 views
Solve the following equations algebraically for n. Show your working using factorial notation.
a) n!/3!(n-2)! = 12 b) 8Pn = 6720
2 answers
554 views
What is the 8th term of (3x-1/2y)^10
1 answer
372 views
A committee of 4 is chosen from a group of 10 women and 6 men. Determine the probability that at least 2 women are on the
1 answer
479 views
A multiple-choice test has 10 questions. Each question has 5 choices. If a student answers each question by guessing randomly,
2 answers
748 views
A company has two factories that manufacture tires. Suppose 65% of the tires are manufactured in factory 1 and 35% are
1 answer
651 views
It has been determined that 30% of students at a certain high school own a cell phone. If 95 students are randomly selected
1 answer
487 views
is cassius is honestly opposed to tyranny
1 answer
379 views
What is the concentration of an HCl solution if 23.1 mL of HCl are needed to neutralize completely 35.0 mL of 0.101 M Ba(OH)2
I
4 answers
479 views
What is the concentration of an HCl solution if 23.1 mL of HCl are needed to neutralize completely 35.0 mL of 0.101 M Ba(OH)2
I
2 answers
791 views
A 65.0-kg runner has a speed of 5.20 m/s at one instant during a long-distance event. (a) what is the runner's kinetic energy at
5 answers
5,339 views
help me find which reactant is the limiting reactant when 74 g NaOH and 44 g CO2 are allowed to react when the equation is
2 answers
813 views
identify the two numbers less than 20 with the most factors
5 answers
1,848 views
a frog sat on a number line, it was on the number 18. it made two equal hops and anded at 0. where did it land first?
1 answer
344 views
Came to America to find freedom to worship and the Promised Land =a.)The North--Puritanism b.)The South---Gentlemen Planters
1 answer
328 views
a scale model of a car is 8 inches long. the actual car is 12 feet long. what is the scale of the model?
5 answers
3,043 views
on January they sold 139 more Doughlas firs than Noble firs. The toal trees sold was 377. which of these is right for me to
3 answers
736 views
55h + 275 = 440
Do I subtract 55 from 275 ?
6 answers
999 views
round to nearest hundred.
113, 279, 367
1 answer
444 views
which number is this rounded too, the nearest ten or hundred?
557 rounds 560
3 answers
1,029 views
how can addition properties help me add whole numbers?
2 answers
1,194 views
can the commutative property be used for subtraction? explain
2 answers
477 views
Mariah and Claire made a bowl of punch. Claire used 10 times as much lemonade as Mariah did. If Mariah used 3/5 of a cup of
1 answer
421 views
A bookshelf is at rest in a room. A force of 35.0 newtons is applied to a bookshelf. If the floor imparts a frictional force of
2 answers
747 views
if a driver is at an acute angle and wants to be completely straight as she enters the pool. what will be the measure of the
4 answers
447 views
The number of years that a stock of $40 increases to $50 at a rate of 8% per year can be written by the logarithmic expression:
l
2 answers
478 views
Chemistry.
AN UNKNOwn gas has a pressure of 2.0, a volume of 15.0 L and a temperature of 348 Kelvin. The sample weighs 4.20
1 answer
467 views
Elmer has a collection of 300 fossils. Of these, 21%, percent are fossilized snail shells.
9 answers
3,352 views
A rectangle with a perimeter of 40 units is graphed on a coordinate grid. The rectangle is dilated by a scale factor of 0.3 with
1 answer
360 views
