Tuesday
May 21, 2013

Posts by lucy


Total # Posts: 667

chemistry
a sample of 15.00 g of an unkown metal chloride, MCl2 is dissolved in 75.0 mL water. the boiling point of the resulting solution is measured at 102.37 degrees C. what is the identity of the metal M.

chemistry
m= 75 mL of water 0.001kg water= o.o75 of warer. 2.37 c = 3*0.512 c/m*m m=1.54297 to get moles 1.59297*0.075/1=0.119473 mol molar mass 15/ 0.119473= 125.551 125.551g -2* 35.45= 54.6514 making it manganese chloride would that be correct ?

chemistry
A compound was found to be composed of the following amounts of elements: 20.00% wt% C, 26.64wt% O, 46.65 wt%N, and 6.71wt%H. A 6.125 grams sample of this compound dissolved in 46.205 grams of water as a solution was found to have a freezing point of -3.260C. The density of th...

Math ( Number Theory )
How many numbers from 1 to 1000 inclusive can be expressed as the sum of k >= 2 consecutive positive integers for some value of k ? Sorry to post question from Brilliant, I got 997 integers, but it's wrong. If you think you can answer ...

math
Find all roots of the equation ln(4-x^2)=x correct to 8 decimal places. List all successive approximations.

math
5/24 feet long because if you divide 5/8 by 3 you simply multiply 5/8 times 1/3 and that is how you get the answer

math
It is noon. A secret agent is driving a jeep through the desert in the tiny principality of Alta Loma. He is 32km from the nearest point on a straight, paved road. Down the road 16km is a power plant in which a band of international terrorists has placed a time bomb set to exp...

math
When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another and toward an observer stationed between them. One of the trains moves at 30.0 m/s, and the observer hears a beat frequency of 3.6 beats per second. What is the speed of ...

Chemistry
the number of moles that contains 5.13x1022 atoms of manganese

soanish
he following question about Gabriel García Márquez. ¿Qué suceso importante aconteció para Márquez en 1982? a. publicó la novela “Cien años de solerdad” c. escribió sus obras mas importantes b. se le otorg...

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