Wednesday
December 11, 2013

# Posts by Alice

Total # Posts: 501

Chemistry
How many moles of NaCl are in 2.00mL of 1.00M NaCl?

math
A basket contains 15 red numbered balls and 10 white numbered balls. A sample of five balls is selected. How many samples contain three red balls and two white balls? Explain your answer.

Chemistry
A solution has a mass of 95.00g and a density of 2.147 g/mL. What is the volume of the solution?

Physics
A proton moves eastward in the plane of Earth’s magnetic equator so that its distance from the ground remains constant. What is the speed of the proton if Earth’s magnetic ﬁeld points north and has a magnitude of 5.2 × 10−5 T? The acceleration of g...

Physics
A proton moves eastward in the plane of Earth’s magnetic equator so that its distance from the ground remains constant. What is the speed of the proton if Earth’s magnetic field points north and has a magnitude of 5.2 × 10−5 T? The acceleration of gravity...

RATIOS
10.6 PESO IS \$1 US DOLLAR. YOU HAVE 2500 PESO. YOU WANT TO EXCHANGE TO US DOLLAR. HOW MANY WOULD YOU GET?

RATIOS
A MODEL TRAIN IS 1;48 ON SCALE. THE ENGINE IS 13 5/8 INCHES. HOW MANY FEET IS THE ACTUAL ENGINE?

Math
Write the following complex number in polar form: z = 4 − 4i

maths
alissa is33 years old jacj is three times alyssa's age. How old are Jack and alyssa altogether?

chemistry
what is the specific heat of copper if the temperature of a 100g sample of copper is increased by 23C when 886J of heat is added ?

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