Friday

February 24, 2017
Total # Posts: 35

**Math**

no one is here to help at this time

*September 24, 2013*

**math**

find the measure of each interior angle of a regular 18 - gon.

*September 24, 2013*

**math**

so 1000 million is a billion and a 1000 billion is a trillion

*September 22, 2013*

**english**

i used the ictionary i cant figure which one it is

*September 8, 2013*

**english**

everyday their are more and more dirty dishes to wash-truly a(n) task. a=epicurean b=jovial c=sisphean d=gslvanized its d

*September 8, 2013*

**english**

everyday their are more and more dirty dishes to wash-truly a(n) task. a=epicurean b=jovial c=sisphean d=gslvanized its d

*September 7, 2013*

**geometry**

what is the diffwereence between a postulate and theorom

*August 27, 2013*

**english**

i need a quote that evikes mood and a word decicribing the mood

*August 27, 2013*

**geometry**

abc and cbd are adjacent angles which side do the angles have in common

*August 27, 2013*

**geometry**

a line that contains ab and cb

*August 25, 2013*

**geometry**

if a picnic area is located at the midpoint between sacramento and oakland fidn the distance to the picnic area from the road sign roseville 5 sac 23 oakland 110

*August 23, 2013*

**geometry**

a line that intersectgs two nonintersecting planes

*August 23, 2013*

**chemistry**

Point 6 - covalent bond -Wrong !!!

*June 1, 2013*

**chemistry**

Sulfuryl chloride, SO2Cl2, decomposes to SO2 and Cl2 according to the reaction SO2Cl2(g) -> SO2(g) + Cl2(g) The reaction is first order in SO2Cl2, and the value of the rate constant, k, is 2.20*10-5 /s at 300K. (a) Calculate the intial rate of reaction when a reactor is ...

*May 31, 2013*

**chemistry**

My dear.....check the signs (-) on the values and then check the question once again......mu answers are 100% correct...and i have scored 100% n this exam also.....:P

*May 31, 2013*

**chemistry**

a- silane b- phosphine c- HF

*May 31, 2013*

**Chemistry**

No problem.....:)

*May 30, 2013*

**Chemistry**

7.4*10^18

*May 30, 2013*

**chemistry**

The N-N bond energy is difficult to measure. Given the values of 190 kJ/mol for the N-Cl bond energy and 240 kJ/mol for the Cl-Cl bond energy, determine the maximum de Broglie wavelength of an electron capable of breaking the N-N bond. Express your answer in m.

*May 30, 2013*

**chemistry**

Would you expect the solubility of PbCl2 in water to change dramatically if it were to be dissolved into a solution of 3.091×10−4 M KCl? Yes, the solubility of PbCl2 would decrease dramatically. Yes, the solubility of PbCl2 would increase dramatically. No, the ...

*May 4, 2013*

**chemistry**

Consider the gold-platinum system which has a value of delta w of -4250 J/mole; (a) Calculate the enthalpy of mixing for a solution of 10% platinum and 90% gold. Express your answer in units of kJ/mole. (b) Is the dissolution of 10% platinum into gold an endothermic or an ...

*May 4, 2013*

**chemistry**

Estimate the fraction of of unoccupied atomic sites in lead (Pb) at a temperature 10K below its melting point. DATA: Vacancy Fraction, nv/N T (degrees C) 1.8*10-7 100 7.2*10-6 200 Express your answer in terms of vacancy fraction, nv/N:

*April 27, 2013*

**chemistry**

Which of the following will increase the strength of a sample of 90% SiO2 - 10% MgO Quench the entire sample in water Quench half of the sample in water Cool the entire sample with air jets Cool half the sample with air Submerge the sample in a salt bath of Na2O Submerge the ...

*April 26, 2013*

**chemistry**

The energy of vacancy formation in palladium (Pd) is 1.5 eV. At 888C there is one vacancy for every million (106) atom sites. What temperature would be necessary to achieve a vacancy fraction of one for every thousand (10 3) atom sites? Express your answer in degrees C:

*April 26, 2013*

**Chemistry**

You have 333 mL of alkaline solution at pH = 11.1. You wish to neutralize this by reacting it with 222 mL of acid. What must be the value of the pH of the acid?

*January 11, 2013*

**maths.**

Alice spent some money on 60 stamps of two different values. The values of stamps could be 5-cents, 10-cents,20-cents and 30-cents. The total amount of money he spent was between $5 and $10. 2/5 of the tamps cost 4/3 times as much as the rest of the stamps. a)What were the two...

*April 13, 2012*

**maths**

Mr Tan had a box of marbles. 2/3 of the marbles were blue and the rest were yellow. He gave his son 4/5 of the blue marbles and 3/4 of the yellow marbles. If he had 39 marbles left, how many marbles did he have at first?

*April 13, 2012*

**maths**

A factory was required to produce a crtain number of television in four days. On the first day, it produced 1/6 of the required number of television sets. On the second day, it produced another 18 sets. On the third day it produced twice as many television sets as those ...

*April 13, 2012*

**physics**

sssssss

*February 23, 2011*

**Chemistry**

so what's the answer?

*October 11, 2010*

**chem**

dr bob you are wrong. You got the correct pka value, but you need to take the anti log of that value to get Ka. Answer is 0.158

*February 28, 2009*

**Math**

R (real numbers as x can equal anything

*June 19, 2008*

**calculus**

dy/dx= (2x-2xy)/(x^2+2y) Find all points on the curve where x=2. Show there is a horizontal tangent to the curve at one of those points.

*October 18, 2007*

**calculus**

The diagonal of a square is increasing at a rate of 3 inches per minute. When the area of the square is 18 square inches, how fast(in inches per minute) is the perimeter increasing?

*October 18, 2007*

**calculus**

a spherical snowball with diameter 4 inches is removed from the freezer in June and begins melthing uniformly such that it is shrinking 2 cubic inches per minute. How fast ( in square inches per minute) is the surface area decreasing when the radius is 1 inch?

*October 18, 2007*

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