# Posts by chels

Total # Posts: 63

**science**

In the following equation , 417.96 g of Bi reacts completely with 200 g of F . How many grams of BIF (to the third power) are formed?

**math**

A ) 10*6 = 60 10*6= 60 60+60 = 120 20 heaps

**Math Probability**

We have looked at the probability that two non-mutually exclusive events A or B can happen in this learning experience. We will take it one step further and look at the probability that event A or B or C will happen. The formula is: P(A or B or C) = P(A) + P(B) + P(C)- P(what ...

**math**

No, for the tree I start with a branch of 0.6 and 0.4 and from there branch off to .35,.45,.55, and .65?

**math**

Zared plays basketball on his high school team. One of the things he needs to practice is his free throws. On his first shot, there is a probability of 0.6 that he will make the basket. If he makes a basket, his confidence grows and the probability he makes the next shot ...

**Math**

Two teams, the Exponents and the Radicals, square off in a best of 5 math hockey tournament. Once a team wins 3 games, the tournament is over. The schedule of the tournament (for home games) goes: E-R-E-R-E If the Exponents are playing at home, there is a 60% chance they'...

**math**

you purchase a bicycle with a retail (pre-tax) price of $760. the local sales tax rate is 7.6%. what is the final cost

**maths**

San Jay is 2 years younger than Sara. Who is 5 years old than Sasha. San Jay age and Sasha s age total 31. How old is Sara?

**math**

I have fewer ones than tens. The value of my tens is 20. What two numbers can I be?

**U.S History**

Why were the Vietcong so successful against the United States? A.The Vietcong held the strategically important Ho Chi Minh Trail. B.U.S. troops could not engage the Vietcong in traditional warfare. C.Vietcong forces had superior weapons and military training. D.U.S. soldiers ...

**Chem**

A 4.369 g sample of metal is placed in a flask. Water is added to the flask and the total volume in the flask is read to be 126.4 mL. The mass of the water, flask, and metal is 268.5 g. If the mass of the flask is 139.3 g and the density of water is 1.000 g/mL, what is the ...

**Chemistry**

A solution has a pH of 3.90. What is the hydroxide ion concentration? I know that I need to find H30+ first but my teacher doesn't allow calculators on the test. So how would I find the answer WITHOUT a calculator?

**Chemistry**

37.5ml 1L .152 mol NaCr 1 mol AgNO3 -------|-------|-------------|-------- 10^3ml 1L 1 mol Na2cr 1 L 25ml -------------|-------- 1 mole AgNo3 10^3ml

**Algebra 2**

I tried that already, it didn't work.

**Algebra 2**

An ice-cream parlor sells sundaes with 3 different types of ice-cream and 4 different toppings. They have 8 flavors of ice-cream and 10 toppings for their customers to chose from.what is the probability that a customer orders a sundae including chocolate and strawberry ice ...

**Algebra 2**

A company can produce T-shirts for $0.99 each. They spent $1,000,000 on their building and machines. What is the horizontal asymptotes of the graph that models the average cost of each t shirt, including the start up cost?

**Algebra 2**

half life carbon -14 is 5,730 years. If you start out 50 grams, how long will it take until it reaches 2 grams?

**Algebra 2**

Use the associative property of multiplication to write an expression equivalent to 8x*(4y*7z)

**Algebra 2**

what is the opposite of 49x^2y A. 49x^-2y b. -49x^2y c. 1/49x^2y d. -49/x^2y

**Algebra 2**

two resistors are connected in parallel. Their resistances are 8 ohms and 17 ohms. What is the resistance (R) of the combination? R=---ohms

**Algebra 2**

I=2V/R+2r Solve for r. simplify

**Algebra 2**

I=2V/R+2r Solve for r.

**Algebra 2**

I=nE/R+nr Solve for R. Simplify

**chemistry**

What is the number of moles of NaOH in 1.91 mL of a 872.25 molar solution?

**chemistry**

What is the number of grams of KCIO3 to make 750 mL of 0.227 M?

**Math**

My qestion is how do you find out how many degrees of latitude separtae each other. For example How many degrees of latitude separate (45N, 65W) and (32S, 65W)? Thanks for your help

**statistics**

The time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be approximated by a normal distribution with a mean value of 120 sec and a standard deviation of 25 sec. The fastest 10% are to be given advanced training. What task...

**chemistry**

Ni with +2 electron

**Chem 219**

thank you for your response, I think I can solve the stoichiometry, the main issue for me is trying to set up the formula. do you think could help me try to set up the formula? the components confuse me.

**Chem 219**

If 48.9g of barium chloride dihydrate, BaCl2.2H20, was treated with excess silver nitrate solution. (show formula) a). how many moles of silver chloride precipitated? b). how many grams of silver chloride precipitated? thank you!

**Chemistry**

Molar Mass of KCLO3 (potassium chlorate)= 39.10+35.45+3(16.00)=122.55 First use what you are given, then use the mole to mole ratio to cancel out moles KClO3 and multiply keeping mol O2. (12.00 moles KClO3)x(3 mol O2/2 mol KClO3) =18 moles O2 :D

**Chem**

So would the answer be c because it has 3 times the H+?

**Chem**

Which of the following solutions would require the greatest volume of 1.0M NaOH for complete neturalization? a)10.0ml of 1.0M HCl b) " of 2.0 M H2S04 c) " of 3.0M H3P04 d) " of 4.0M H2C204 I don't understand what to do to solve it.

**Tx. History**

I know like the Americas/us wanted to take over the Mexians territory which was Texas or something like rhat.

**Tx. History**

For the Mexicans and The us. Around early 1800s in Texas

**Tx. History**

What was the American experience?

**Microbiology Please Help Anyone**

You wish to study a variant [a close relative] of the Tobacco Mosaic virus. Specifically you want to characterize the capsid and genetic component as well as determine the viral load required to cause a disease state. a. What methodologies might you use to isolate and ...

**Microbiolgy- Please Help!**

You wish to study a variant [a close relative] of the Tobacco Mosaic virus. Specifically you want to characterize the capsid and genetic component as well as determine the viral load required to cause a disease state. a. What methodologies might you use to isolate and ...

**chemistry**

what happens when you place sodium hydroxide and water into a calorimeter?

**Physics**

Pulling the string on a bow back with a force of 28.7 lb, an archer prepares to shoot an arrow. If the archer pulls in the center of the string, and the angle between the two halves is 138*, what is the tension in the string?

**Physics**

A 0.53-kg billiard ball initially at rest is given a speed of 12 m/s during a time interval of 4.0 ms. What average force acted on the ball during this time?

**health**

the ability to gather, understand, and use health information to improve your health

**science**

what are all of the formulas for physical science?

**Pre-calc**

Simplify i^51 Im really not sure what they are saying. i to the 51ith power? Wouldnt it already be simplfied or what. It doesnt make sense to me.

**spanish**

No I know what it says but the first is the question and the others are the answer choices. They didn't seem to make sense to me, like none of them were right

**spanish**

La cocina esta muy sucia. Tu padre dice estas lavando los platos lavan los platos lava los platos y saca la basura Estas sacando la basura

**Advanced Math**

Find the measure of the reference angle for 400 degrees. How would I do this?

**Physics**

Doubling the amplitude of a wave will double the amount of energy the wave can transfer. true or false Is it true? That's what I think but I am not that good at this sort of thing.

**accounting**

Post-closing trial balance What am I supposed to do when the balance is not equal? As in credits do not match debits. I follow the instructions in the book but no matter what it just does not match, even if i do all the debits on one side and all the credits its 11,000 and 12,...

**Accounting**

Yeah I know that's why Im confused.....I know how to use and balance a checkbook but these are the only choices they gave me.

**Accounting**

A deposit of $1,250 that was incorrectly in the checkbook as 1,200 should be a. added to the checkbook b. deducted from the cheeckbook c. added to the bank statement balance d. deducted from the bank statement balance ok so I know for sure its not c or d as the bank has the ...

**accounting**

This is what my book says The first step in closing is to transfer the balance of the revenue account to Income summary, the balance is found in the Income Statement section of the work sheet Then to record into the general journal 1. Enter "closing entries" in the ...

**Economics**

A buyer is usually not willing to spend a lot of time and energy researching the market when: c. savings to be made are small or d. prices vary but quality is still the same I read the text but I couldn't really find this exactly, both answers seem like they could be right...

**philosophy**

Beautiful harmony comes from things that are in opposition to one another [Heraclitus ok i need to write my personal philosophy and i cant think of any examples of this quote for my body pargraphs...except velcrow..i don't think that a good one thought lol... maybe if you ...

**Physics???**

if anyone checks this-please help!!!! please!!

**Physics???**

When the air temperature is below 0 C, the water at the surface of a lake freezes to form a sheet of ice. If the upper surface of an ice sheet 24.2 cm thick is at -10.7 C and the bottom surface is at 0.00 C, calculate the time it will take to add 1.80 mm to the thickness of ...

**Trigonometry**

Which Triangle has 2 solutions? a. A=130 degrees, a=19, b=11 b. A=45 degrees, a= 4(sqrt 2) b=8 c. A=32 degrees, a=16, b= 21 d. A=90 degrees, a=25, b=15 I really don't know how to do this one so I can't put what my answer is.

**Radicals**

How do you graph y>= sqrt(3x+12) Show how to get certain points.

**Algebra 2(graphing)**

Solve 2x^2=3x+2 by graphing. If exact roots can't be found, state the consecutive integers between which the roots are located. Can you show how to do this step by step?

**Algebra 2(quadratic)**

Use the value of the discriminant to determine the number and type of roots for the equation: (x^2+20=12x-16) 1 real, irrational 2 real, rational no real 1 real, rational

**Algebra 2(check pt 4)**

I am so stuck on these same exact problems on my Algebra 2 test.

**Help**

dissonance : resonace :: harh : rich music : polyphony polyphony : instrument cacophony : telepragh I presume you mean "harsh" not harh. So, to do an analogy, you really need to understand the meanings of all the words involved. Do you know what dissonance and ...

**algebra 1**

v(v-3)= v^2+6 Does any one know if this is in the quadratic form or not The v^2 means v second power No it is not. Please read: http://www.wtamu.edu/academic/anns/mps/math/mathlab/col_algebra/col_alg_tut20_quadform.htm

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