Friday
December 13, 2013

# Posts by steven

Total # Posts: 365

Chemistry
Cobalt-60, which undergoes beta decay, has a half-life of 5.26 yr. How many beta particles are emitted in 190s by a 3.10mg sample of Co-60? What is the activity of the sample in Bq?

Microbiology
Please help me answer this question. Thanks a lots. Some Archaea have ATPases with different H+:ATP ratios. Assumes the delta Gp for ATP synthesis in one such organism is -518 mV. The minumum delta P required to generate ATP with a typical bacterial ATPase is about -173 mV. AT...

Math
Solve each equation. 9n-3=7(n+3)+2n I got -24 is that right?

Algebra II
What is the simplified version of (2x^(-3)y^(2))^(-2) and (z^4)/(2z^3) Thanks!

algebra
what is 28 seconds over 2 minutes written in its simplest form

APUSH
how did huge industrial trusts develop in industries such as steel oil and banking, what was the effect on the economy?

Physics
A total of 8.0 joules of work is done when a constant horizontal force of 2.0 newtons to the left is used to push a 3.0 kilogram box across a counter top. Determine the total horizontal distance the box moves.

ahsa math
hey need help with this asap you are given 12 feet of fencing to build a cage how many different rectangle can you build? WHICH WOULD YIELD THE MAXIMUM AREA

pre calc
evaluate the trigonometric function of the given quadrantal angle. tan 1440° Evaluate without using ratios in reference triangle. sec 3π/4

Chemistry
What acid and what strong base would react in aqueous solution to produce the following salts in the formula equation? Write the balanced formula equation for each reaction. a) potassium perchlorate b) cesium nitrate c) calcium iodide I don't need just the answers, I'm...

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