Recent content by terainfizik

Homework Statement A boat needs to sail due north , but the current is flowing southeast at a speed of 20km/hr. In still wate, the boat has a maximum speed of25km/hr . (a) In what direction will the boat actually move (relative to an observer on land)? (b) What's the course (direction)...

Somebody help me please .

Nobody guide me here ?

Homework Statement In an experiment , b mole of hydrogen iodide were put into a sealed vessel under pressure p . At equilibrium, x mole of the hydrogen iodide had dissociated , the reaction being represented by the following equation , Express in terms of b and x of Kp . Homework...

{EDIT} For methane combustion : CH4 + 3O2 ---> CO2 + 2H2O Since 1 mole of CH4 : 1 mole of CO2 SO: 10CM^3 CH4 will gives 10 cm^3 CO2 For ethane combustion : C2H6 + 7/2O2 ---> 2CO2 + 3H2O Since 1 mole of C2H6 : 2 mole of CO2 So: 10cm^3 C2H6 will gives 20 cm^3 CO2 ? so total volume is 30cm^3 ?

I think the equation is as below : For methane combustion : CH4 + O2 ---> CO2 + H2O Since 1 mole of CH4 : 1 mole of CO2 SO: 10CM^3 CH4 will gives 10 cm^3 CO2 For ethane combustion : C2H6 + O2 ---> CO2 + H2O Since 1 mole of C2H6 : 1 mole of CO2 So: 10cm^3 C2H6 will gives 20 cm^3 CO2Total gas...

I only know that acid react with base will produce water and salt .

I have no idea . Guide pls .

Water and carbon dioxide . I think . So..?

Homework Statement A mixture of 10cm^3 of methane and 10cm^3 of ethane was sparked with an excess oxygen . After cooling to room temperature , the residual gas was passed through aqueous potassium hydroxide What volume of the gas absorbed by the alkali ? Homework Equations N/A The Attempt...

'g-force' , how 'd i calculate ?

Thank you for giving me these hints . I have worked it out . You guys shows clear statements working .

Homework Statement A car is involved in a collision when it is traveling at 24m/s. The driver , of mass 85kg, is brought to rest by the seat belt in a time of 400 ms . Calculate the average force exerted on the driver by the seat belt . Compare this force with his weight , and hence...

The end of the velocities ( in the soil ) should be zero ? Is that mean F= m(v-u)/t , where m= weight of coin , v= ending speed of dropping into the soil ? and u=initial speed of dropping from the building ( zero also ? ) Guide me please.

Homework Statement A coin of mass 10g is dropped from the top of a tall building. If after failing for 10s , it falls intosoil and penetrates to a depth of 5cm, calculate (Q) the average force exerted on the coin by the soil. Homework Equations The Attempt at a Solution...