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Questions (12)

What are possible questions and answers that could go on a Unit Test for Forces and Motion?
1. 0 answers
2. 1,066 views
8. Simplify. x+7/x^2+4x-21A. 1/x-3 B. x-3 C. 1/x-7 D. x-7 I went with A. Am I correct if not help me please?
1. 4 answers
2. 415 views
The sum of the measures of angle A and angle Y is 90. If the measure of angle X is 30 less than twice the measure of angle Y,
1. 12 answers
2. 8,636 views
A conical tank sits point down, at ground level, so that the circular top of the tank is parallelto the ground. The tank is 5.0
1. 1 answer
2. 654 views
It is found that 24.68 mL of 0.1165 M NaOH is needed to titrate 0.2931 g of an unknown acid to the penolphtalein end point.
1. 2 answers
2. 1,142 views
What is ksp for lithium carbonate?I got an answer of 2.40 x 10^-4 but i need to check that answer with somebody who can work
1. 5 answers
2. 2,564 views
The position of a particle moving on the x-axis at time t>0 seconds is: x(t)= e^t - t^1/2.a) Find the average velocity of the
1. 1 answer
2. 2,007 views
Let R be the first quadrant region enclosed by the graph of y= 2e^-x and the line x=k.a) Find the area of R in terms of k. b)
1. 1 answer
2. 2,060 views
In the titration of 50.0 mL of 1.0 M CH3NH2 (kb=4.4 x 10^-4), with 0.50 M HCl, calculate the pHa) after 50.0 mL of 0.50 M has
1. 5 answers
2. 3,196 views
Find the antiderivatives.1) �ç�ãx (x+1) dx 2) �ç(x^3-4)/ (x^2) dx 3) �ç(3sinx) dx 4) �ç(5secxtanx) dx 5) �ç(1/x) dx
1. 2 answers
2. 696 views
The identity of an unknown solid is to be determined. The compound is one of the seven salts in the following table.Al(NO3)3•9
1. 4 answers
2. 2,137 views
An unknown compound contains only the three elements C,H, and O. A pure sample of the compound is analyzed and found to be 65.60
1. 3 answers
2. 1,564 views