Answers edited by Peter M.
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Question #146da

Question #3c7cf

An exothermic reaction releases 86.5 kJ. How many kilocalories of energy are released?

Physics Question: A 2.0 kg block is launched up a frictionless ramp?

Question #28428

Given #f(x) = 17x^2#, what is the average rate of change in #f(x)# over the interval #[1,5]#?

Question #74ccc

Question #35611

How to do this question in regards of matrices and transformation?

Why is there are huge energy change between the 9th and the 10th electron in the sodium atom?

If light has a wavelength of 468 nm, what is the energy of this light expressed with units of kJ/mol?

Question #3bdb8

Question #35427

Question #51b13

Given the reaction at equilibrium: #N_2(g) + O_2(g) + e n ergy rightleftharpoons 2NO(g)# What change will result in a decrease in the amount of #NO(g)# formed?

Question #02816

#Q(t) = Q_(o)e^(kt)# may be used to model radioactive decay. #Q# represents the quantity remaining after years; #k# is the decay constant, 0.00011. How long, in years, will it take for a quantity of plutonium240 to decay to 25% of its original amount?

A vehicle travelling with a uniform velocity was given a uniform acceleration, and in the sixth and tenth seconds after the acceleration began it was observed to travel 15 m and 23 m respectively. What is the acceleration and the initial uniform velocity?

What is the amount (in moles) of copper (II) sulfate pentahydrate that you will need to make 100mL of a 0.500 mol/L solution, with all the calculations?

What is the angular momentum of a rod with a mass of #2 kg# and length of #9 m# that is spinning around its center at #12 Hz#?