helpmeplease

Arene

Amide

Alcohol

Ether

Carboxylic Acid

Ester

Does anyone know how to draw the chair conformations for allose and tert-butylcyclohexane? Thanks in advance 

It takes 799 Joules of work to compress 0.301 moles of an ideal gas from volume 11.7m3 to volume 4.79m3 at a constant temperature.  What is the temperature of the gas in Kelvins? 

Assume 3 significant digits. 

7.11 grams of ice at -13 degrees Celcius are placed in a pot (with a lid) on the stove and heated for 8.94 minutes until it becomes steam at 118 degrees Celcius. How many Watts of power did the stove provide if there were no heat losses?  

Assume 3 significant digits. 

A. The radius of a water pipe is 14.4cm.  How fast does the water flow in the pipe if the flow rate is Q = 396 L/min?    

Assume 3 significant digits and MKS units of m/s. 

B. A swimmer is at the bottom of a 3.99 meter deep pool that is filled with water.  What is the force exerted on an eardrum if the area of the eardrum is 58.1 mm2? 

Assume 3 significant digits and units of Newtons.

Suppose you exert an upward force Fi to the handles of a wheelbarrow at a distance of li = 1.84 m to the left of the contact point between the wheel and the ground as shown in the figure below.  The center of gravity of the loaded wheelbarrow is located at a distance of lo = 8.82 cm to the left of the contact point between the wheel and the ground. 

What upward force Fi must you exert to support the wheelbarrow and its load if their combined mass is 103 kg?  Assume 3 significant digits in your answer and assume units of Newtons.

Intravenous infusions are usually made with the help of the gravitational force. Assuming that the density of the fluid being administered is 1.46 g/mL, at what minimum height should the IV bag be placed above the entry point so that the fluid just enters the vein if the blood pressure in the vein is 105 mm Hg above atmospheric pressure?  

Assume 3 significant digits and units of meters.  Patm = 1.01x105 Pa = 760 mm Hg

A neutron star with a radius of 47.1 km is rotating with a period of 8.66 ms.  The neutron star collapses radially under its own weight until it reaches a new radius of 18.3 km.  

You can approximate the neutron star as a uniform solid sphere with a shrinking radius and a constant mass during this process. 

What is the v/c = the ratio of the tangential speed on the equator of the neutron star to the speed of light? 

Use c = 3.00x108 m/s and assume 3 significant digits in your answer. 

It should be no surprise that chalk is actually a mixture and is full of impurities. If your stick of chalk is actually 79.8% gypsum, 12.7% calcium carbonate, and 7.5% other materials, what would be the number of calcium atoms?

Suppose you have two masses, M and m, separated by a distance R.  Suppose you made the mass M 18.5 times bigger and you made the distance r 6.3 times smaller.   The force would then be _____  bigger.   (Assume standard notation and three significant digits in your answer).  

A black hole with a mass of 50 solar masses has a Schwarszchild Radius of ______ km.  Assume 3 significant digits and do not use scientific notion 

Suppose a comet has an average orbital radius of 41.6 AU.   What is the period of the orbit in years?  Assume standard notation and three significant digits in your answer.  

A p0tarticle moves along a path that varies in time according to the following: 

x(t)=(10+15.0t^2-25.0t^3)m and y(t)=(15.0+10.t-5.00t^2)m

What is the magnitude of acceleration at t=3.00s

If there were 6 bases in DNA instead of 4, and 30 amino acids instead of 20, how long would a codon need to be in order to specify an amino acid if the code were to remain unambiguous? Explain your answer....