# Posts by curt

Total # Posts: 17

**Chemistry**

Estimate the value of deltaGf for COCl2(l) at 25 degrees celcius

**math**

A school debate team has 4 girls and 6 boys. A total of 4 of the team members will be chosen to participate in the district debate. What is the probability that 2 girls and 2 boys will be selected? A.3/7 B.4/10 C.1/14 D.1/210

**physics**

An object is thrown vertically up and attains an upward velocity of 10 m/s when it reaches one fourth of its maximum height above its launch point. What was the initial speed of the object? The acceleration of gravity is 9.8 m/s2. Answer in units of m/s

**chemistry**

How many atoms of tin are necessary to react completely with 7.42 x 10(24th)g of HF. Sn(s) + 2HF(g) = SnF2(S) + H2 (g)

**Math**

A store mixes Brazilian coffee worth $10 per kilogram and Turkish coffee worth $12 per kilogram. The mixture is to sell for $11 per kilogram. Find out how much of each should be used to make a 216 kilogram mixture.

**Algebra**

The vertices of a kite have coordinates (14,2), (10,-4), (6,2), and (10,y). If the kite has an area of 64 square units, what is the value of y?

**History**

How does the process of quarantine change from the Indians (small pox), Italians (typhoid) to the Chinese (bubonic plague)? Explain.

**Business Comm 1**

A good paragraph has unity; that is, it discusses only one idea, or topic. The topic sentence states the main idea and provides a scaffold to structure your document. Your writing will be easier to read if you make the topic sentence explicit and put it at the beginning of the...

**Lit**

The reasons Mcbeth fels he should not kill Duncan?

**physics**

the question is a bit ambiguous in not specifying whether line of sight is UP from the horizontal or DOWN. the correct answer could be: h = 85m[tan 38deg + tan 35deg] ...if the observer is in a window of a nearby building or on a hilltop, etc. [many professors are ambiguous ...

**math**

What happens when the king of breasts run in front of a train?

**8th grade**

if x=-5, y=4 and z=-3 solve x squared (3x-8y)

**algebra**

-6x>1/13 the question is asking me for a solutions set using the multiplication principle

**algebra**

2r-9s=-24 9r+2s=62 the quest asks to write a order pair or tell if there is infinitely solutions or no solutions. can you help

**math**

thank you

**physical science**

how much current flows through a circuit if the resistence is 4 ohms and there is a 12 volt battery?

**College Chemistry**

pH = 3.16 Al(OH)3 + OH^- ==> Al(OH)4-