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Identify the backbone of Benzoic Acid.?
3 AnswersChemistry2 years agoDo all enzymes have the same optimum temperature? Yes or no Explain why.?
7 AnswersBiology3 years agoWhat happens when an acid and base are added to water?
a) Acids increase both H+ and OH- ion concentrations
b) Bases decrease both H+ and OH- ion concentrations
c) Acids increase H+ and decrease OH- concentrations
d) Bases increase H+ and decrease OH- concentrations
5 AnswersChemistry3 years agoIs the transport of water molecules an active or passive process?
2 AnswersBiology3 years agoThe mass of a rocket decreases as it burns through its fuel. If the rocket engine produces constant force(thrust), how does the?
...acceleration of the rocket change over time?
A)It decreases
B) It increases
C) It does not change
2 AnswersPhysics3 years agoDuring a storm, a car traveling on a level horizontal road comes upon a bridge that has washed out. The driver must get to the other side,..?
so he decides to try leaping the river with his car. The side of the road the car is on is 20.3 m above the river, while the opposite side is only 2.4 m above the river. The river itself is 64.0 m wide.
A) How fast, in m/s, should the car be traveling at the time it leaves the road in order to just clear the river and land safely on the opposite side?
B) What is the speed of the car just before it lands on the other side?
3 AnswersPhysics3 years agoAccording to the Guinness Book of world records, the longest homerun ever was measured by Roy Dizzy Carlyle in a minor league game. The ball?
...traveled 188 m (618ft) before landing on the ground outside the ball park.
a) Assuming the ball's initial velocity was 48 degrees above the horizontal and ignoring air resistance, what did the initial speed of the ball need to be to produce such a home run if the ball was hit at a point 0.9m (3.0 ft) above ground level? Assume that the ground was perfectly flat.
b) How far, in meters, would the ball be above a fence 3.0m(10ft) high if the fence was 116m (380ft) from the home plate?
1 AnswerPhysics3 years agoYou roll a fair coin three times and observe the top face. A) What is the sample face in the above experiment?
B) Give an example of two possible events
C) Let A be the event that you observe all HEADS. Let B be the event that exactly two HEADS are observed. And let C denote the event that no more than one TAIL is observed. Construct the following:
A^c=?
AUC=?
BUC=?
AUBUC=?
AnB=?
AUC=?
BnC=?
AnBnC=?
D) Construct a Venn Diagram to illustrate your answer for A^cnC
1 AnswerMathematics3 years agoA boy has 5 cars, 3 trains, and 2 trucks. A) How many ways are there to choose 5 toys from the boy’s collection of toys?
B) How many ways are there to choose 2 cars, 2 trains, and 1 truck?
Thank you in advance!!
4 AnswersMathematics3 years agoA solution is 0.020 M in KMnO4. A student is asked to prepare 500.00 mL of Na2C2O4 solution, 25.00 mL aliquots of which will be used to...?
standardize the KMnO4. If approximately 33 mL of KMnO4 are to be used in each titration, describe exactly how you would prepare the sodium oxalate solution. Show all calculations. (M.W. Na2C2O4 = 134.0)
THANK YOU in advance!!
1 AnswerChemistry3 years agoDetermine delta H for the reaction CS2+3Cl2 to CCl4+S2Cl2. Algebraically combine the necessary equations. Show work. Thanks in advance!!!?
(1) CS2+3O2 to CO2+2SO2. H=-1077kJ
(2) 2S+Cl2 to S2Cl2. H=-58.2kJ
(3)C+2Cl2 to CCl4. H=-135.4kJ
(4)S+O2 to SO2. H=-296.8kJ
(5)SO2+Cl2 to SO2Cl2. H=+97.3kJ
(6)C+O2 to CO2. H=-393.5kJ
(7)CCl4+O2 to COCl2+Cl2O. H=-5.2kJ
1 AnswerChemistry4 years agoFind the general solution of the following: y '''+3y''-4y = 0.?
Thank you in advance!!
1 AnswerMathematics4 years agoFind the general solution of the following: y '''+3y''-4y = 0.?
Thank you in advance!!
1 AnswerMathematics4 years agoThe mass of salicylic acid is 2.001g. The volume of acetic anhydride is 5mL. The Mass of dry Aspirin is .887g.?
Determine the limiting reagent in the aspirin synthesis. (Density of acetic anhydride is 1.6908 g*mL^(-1)) What is the theoretical yield of aspirin? What is the percent yield of aspirin?
1 AnswerChemistry4 years agoWhat functional group in aspirin reacts with NaOH?
1 AnswerChemistry4 years agoYou titrate 0.578 g of impure aspirin with 27.83 mL of 0.865 M NaOH. What is the molar mass of this sample? Show work.?
Thank you in advance!
1 AnswerChemistry4 years ago