Heat 1kg of CaCO3, get 560g of CaO. Write the reactant equations and solve the mass of CO2 that born. The CaO is 100% pure. Anyone help me, pls?
1 mole of an element or compound contains 6.20 times 10 to the 23rd power atoms or molecules of the element or compound. 1 mole of an element or compound has a mass equal to its mass number (or molecular weight) in grams. For example, 1 mol of hydrogen gas (H2) contain 6.02 ti...
math- check my answer
An internet investment company advertises that if you invest your money with them at 14%, compounded annually, they guarantee yo double your money sooner than you can imagine. Ignoring taxes, how long would it take to double your money at a simple rate of 14% compounded annual...
business math- check my answers please
A share of perpetual preferred stock pays an annual dividend of $6 per share. If the investors require a 12% rate of return, what should be the price of this preferred stock? a. $57.25, b. $50.00, c. $62.38, $46.75, e. $41.64. I chose b. $50 because $50 x 12% = $6...is this co...
If the break-even point is $360K, and if I subtract that from $640K, that leaves $280K. Then multiply $280,000 x 30% = $84,000...so the answer is $640k. Am I right?
5th grade social studies
which part of goverment pased laws
Can u give me an example of each please
Someone please help me i really need it!? someone please help me....this is 50 points.....i have done it three times already and my teacher keeps giving it back saying do it over...someone please help me. read the following excerpt, and anayzes the authors use of tone,dicition...
Why is it important for a security professional to know the particular target environment to which they are assigned extremely well? How can experienced security professionals prepare themselves for challenges and opportunities that they have never encountered before? Do you t...
How would I find the limit of (if it exists): lim x-->infinity (4x -3)/(2x +1)
Would this be the answer for this problem 2x^3-x^2 > x x>1 or 0>x>-1/2
It might look better this way... lim x-->3 (x^3 -27)/(x^2 -9)
How would I find the limit of (if it exists): lim x-->3 (x^3-27) -------- (x^2-9)
Where within the cell are the DNA instructions located?
40 for the first one 48 is the last one
its called lokking on the internet.....
can someone please help.
considering the amount of energy required to produce animal based foods and goods, should humans change their habits so they consume products closer to the bottom of the food chain because it is more efficient?