Pre Calculas
A GARDENER HAS 60' of edging. She wants to use it to enclose a 120 square foot rectangular area. She does not have to use up all of the edging. what are the possible lengths that a side of the rectangle can have? Answer using interval notation. Hint: if the length of the r...
Chem 110
supposed that a liter of sample water contains 1.00 mmol of Ca2+ ions and 1.50 mmol HCO3- ions. how many millimoles of CaCO3 will precipitate if this water is boiled for 15 mins?
Chemistry
I am having trouble with this equation and calculating the enthalpy of formation. 2 NaHCO3 (s) --> Na2CO3 (s) + H2O (g) + CO2 (g) delta H129.2kj I get as far as this step and then I don’t know what to do next. delta H= [1*delta H (Na2CO3) + 1* delta H(H2O (g)) + 1* del...
Chemistry
The balanced equation for the decomposition of sodium bicarbonate is 2 NaHCO3 (s) --> Na2CO3 (s) + H2O (g) + CO2 (g)delta H 129.2. Using the enthalpies of formation, calculate the enthalpy of formation of sodium bicarbonate.
7th Grade Language- Arts Ms.Sue~!
3) b 4)d 5)b I just did it. these are the answers
7th Grade Language- Arts Ms.Sue~!
3. A 4. C 5. i dont know sorry but hope this helps when im finished ill tell you the correct answers. be back in a few
Math
What is the difference between Descriptive and casual studies?
Math
What is the difference between experimental and ex post facto research designs?
Calculus
Find the equation of the tangent line to the curve at the given value of t: x=sin(t); y=(cos(t))^2; t=(pi/3)
Science
1.A 2.A 3.C 4.C 5.D 6.B 7.D 8.C 9 Chemilcal I dont know if number ten is fully right but i hope it helps. 10. Color is classified as both physical and chemical properties. Color is a physical property because it is the visible light that the substance does not absorb. Color is...
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