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A transformer with 1000 turns in its primary coil has to decrease the voltage from 4400 V to 220 V for home use. How many turns should there be on the secondary coil?
How many moles of NiCl can be formed in the reaction of 5.00 mol of Ni and 10.0 mol of HCl
If 7.36 g of an unknown gas occupies 79.1mL at 25.02 C and 7.55atm pressure, explain what is the molecular weight of that gas. The value of R = 0.0821 L atm mol-1 K-1.
What masses of calcium sulfate and phosphoric acid can be produced from the reaction of 1.0kg calcium phosphate with 1.0kg concentrated sulfuric acid (98% H2SO4 by mass)?
A nucleoside is composed of ribose that is linked to the nitrogen atom of the base. Which carbon on the sugar is linked to the base. and what is the name of the bond
Assuming that the specific heat of the solution is 4.18J/g*c, and assuming that no heart is lost to the surroundings, determine the value of delta H (in kJ/ mol Sr) for the reaction
The initial volume of the balloon is 5.00 L, and the pressure is 760 mmHg. The balloon ascends to an altitude of 20 km, where the pressure is 76.0 mmHg and the temperature is -50 degrees celsius. What is the new volume,V2 , of the balloon in liter..
if a 10.0 g sample of zns is treated with excess hcl what volume of hydrogen gas is evolved at stp?zn s 2 hcl aq -gt
calculate the concentration of each ion present in a solution that result from mixing 50 ml of a .20 m naclo3 solution
suppose a can contains gas at a pressure of 755 mm Hg and a temperature of 25 degrees celsius, what would be the pressure if the can was heated to 1155 degrees celsius ?
Why does phenolphtalein change colour during the production of gas?
A green leaf has a surface area of 2.10 cm^2. If solar radiation is 1150 W/m^2, how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
You have a solid A with an impurity B and you would like to purify A. Your initial? mixture is 80% A and 20% B (where A and B have the same molecular weight). As often occurs in organic chemistry, both the impurity and the desired component in a s..
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