1) Define a Compound 2) Calculate the percentage of chromium in K, Cro- An inorganic substance was analysed and found to be containing 65,31% Of oxygen 32,65% Of Sulphur and X amount of hydrogen 3. 1. Define empirical formula 3.2.) Calculate the percentage of hydrogen element in the substance. 3.3) Determine the empirical formula for the compound. 6,2579, of hydrated copper sulphate was heated, and during heating the moss quas recorded. The mass a the content was decreasing and apter a while the mass remained unchanged at 4g. 4.4) Give a reason why mass decreased 4.2) Calculate the number of motes a water in the original hydrated salt​

when the use of electricity burdens the fuse and miniarure circuit beakers and there is a possibility of a fuse then they automatically cut off the electricity supply to your homes and after you fix the problem u jzt switch it on and it continues the supply of electricity to ur homes

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

connect the batteries in series and hope