lilsis76
Name:
Alexandria Colunga
School:
Mt. San Jacinto Community College.
About:
Let me start by saying, Hello my name is Alexandria, I'm 25
I think I’m a Awesome- downto earth- Superduper-Fun Loving Person.
I love learning, but math is not my strongest subject and I'm in Precalculus :/
PLEASE anyone who reads this, I would really appreciated it. Thank You ALL!
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lilsis76:
There are 36 students in a certain geometry class. if 2/3 of the students are boys and 3.4 of the boys are under 6 feet tall, how many boys …
updated 2 months ago
2 replies
1 Medal
Mathematics
lilsis76:
Assume that inflation will increase the prices of everything at a rate of 5 percent a year over the next 10 years. In 3 years, what will be …
updated 2 months ago
9 replies
1 Medal
Mathematics
lilsis76:
what is 90 percent of 80 percent of 70 percent?
I feel like I understand it but I really dont. PLEASE HELP!!!
updated 2 months ago
7 replies
1 Medal
Mathematics
lilsis76:
Calculate the Cell Potential and Delta G^0 for the following reaction that takes place in an Electrochemical cell at 25C.
Al(s) / Al 3+ (aq…
updated 4 months ago
5 replies
No Medals Yet
Mathematics
lilsis76:
Calculate the Cell Potential and Delta G^0 for the following reaction that takes place in an Electrochemical cell at 25C.
Al(s) / Al 3+ (aq…
updated 4 months ago
5 replies
1 Medal
Mathematics
lilsis76:
please help: Phosphorus and Chloride gases combine to produce phosphorous trichloride:
P2 (g) + 3Cl2(g) --> 2PCl3(g)
DELTA G at 298K for t…
updated 4 months ago
No Medals Yet
Mathematics
lilsis76:
Help me understand. Determine the equilibrium constant for the following reaction at 398 K.
3Cu(s) + 2MnO4- (aq) + 8H+(aq) --> 3Cu2+(aq) …
updated 4 months ago
88 replies
1 Medal
Mathematics
lilsis76:
MAJOR HELP!!!Trigonometric equations: Find all solutions of the equation in the interval 0° ≤ x ≤ 360°.
a) sin 3 Theta = -squrt2 / 2
b) 2…
updated 4 months ago
9 replies
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Mathematics
lilsis76:
Can someone help me understand GRAPHS OF TANGENT and the RECIPROCAL FUNCTION. Please. Because my problem is:
Graph each function, adjust…
updated 5 months ago
4 replies
No Medals Yet
Mathematics
lilsis76:
A solution contains 9.2x10 -3 M in CU 2+ and 0.73 M in LiCN. If the Kf for Cu(CN)4 2- is 1.0x10 25, how much copper ion remains at equilibri…
updated 5 months ago
1 reply
No Medals Yet
Mathematics
lilsis76:
Calculate the sulfide ion concentration in a saturated H2S solution when the pH is 0.5. The concentration of H2S in a saturated H2S solution…
updated 5 months ago
4 replies
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Mathematics
lilsis76:
How do I figure out the successive tenths in this problem. It does not make any sense.
My homework: Sin (2 + 2pi)
…
updated 5 months ago
35 replies
1 Medal
Mathematics
lilsis76:
Determine the pH and concentration of COv3 ^2- ions in a 0.98 M H2CO3 solution. Carbonic acid is a diprotic acid whose Ka1=4.3e-7 and Ka2=5.…
updated 5 months ago
2 replies
No Medals Yet
Mathematics
lilsis76:
Please Help:
How can I Prove the Following identities:
a) tan^2 theta = sec^2 theta - 1
…
updated 5 months ago
3 replies
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Mathematics
lilsis76:
Prove the Following identities:
a) tan^2 theta = sec^2 theta - 1
b) cot^2 theta = csc^2 theta -1
…
updated 5 months ago
5 replies
No Medals Yet
Mathematics
lilsis76:
How do I prove:
sinB / 1 + cosB + 1+cosB / sinB = 2cscB
updated 5 months ago
28 replies
2 Medals
Mathematics
lilsis76:
Suppose that your helping a friend with his homework on growth law, N(t)=Noe^kt, and on his paper you see the equation e^k = -.75. How do yo…
updated 6 months ago
4 replies
1 Medal
Mathematics
lilsis76:
Exponential problem: how do I solve this problem?
xe^x -2e^x = 0
updated 6 months ago
4 replies
1 Medal
Mathematics
lilsis76:
Can someone help me understand this and solve it please. Im really confused.
The Reaction rate AB--> A + B is second order in AB and has …
updated 6 months ago
89 replies
1 Medal
Mathematics
lilsis76:
Simplifying expressions. How do I do these?? do I convert the -'s to a division looking expression?
1) log(base 10) (x^2 -16) -3 log(b…
updated 6 months ago
47 replies
2 Medals
Mathematics
lilsis76:
If someone can help me understand, and figure this problem.
If each substance costs the same amount per kilogram (kg), which would be most…
updated 7 months ago
9 replies
1 Medal
Mathematics
lilsis76:
The Perimeter of a rectangle is 12m. Find the dimensions for which the diagonal is as short as possible.
updated 7 months ago
33 replies
No Medals Yet
Mathematics
lilsis76:
What is the largest possible area for a rectangle with a perimeter of 80 cm?
updated 7 months ago
27 replies
2 Medals
Mathematics
lilsis76:
Im given the volume and surface area formulas:
The accompanying figure gives formulas for the volume (V), and the total surface area (S) of…
updated 7 months ago
77 replies
1 Medal
Mathematics
lilsis76:
this is a preexam for this tuesday. Need help solving and understand please.
Benzene has a heat of vaporization of 30.72 kJ/mol, and a n…
updated 7 months ago
80 replies
2 Medals
Mathematics
lilsis76:
this is a preexam for this tuesday. Need help solving and understand please.
Benzene has a heat of vaporization of 30.72 kJ/mol, and a n…
updated 7 months ago
3 replies
No Medals Yet
Mathematics
lilsis76:
I need help understand, and doing this problem:
Calculate the amount of energy it will take to vaporize 45.7 grams of SOLID water at 255K…
updated 7 months ago
113 replies
1 Medal
Mathematics
lilsis76:
I need help understand, and doing this problem:
Calculate the amount of energy it will take to vaporize 45.7 grams of SOLID water at 255K…
updated 7 months ago
No Medals Yet
Mathematics
lilsis76:
Place the following substances in order of decreasing vapor pressure at a given temperature? how do I figure out which order they go in?
…
updated 7 months ago
No Medals Yet
Mathematics
lilsis76:
Based on the figure, the point of Diethyl Ether under an external pressure of 1.32 atm is _____degree Celcius.
How can I figure this out?…
updated 7 months ago
28 replies
1 Medal
Mathematics
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