When a solution is made up dissolving of soada ash
Determine pH of this solution at the 25C when a solution is made up dissolving the 45.0g of "soda ash" (99.0% pure Na2CO3, by weight)) and 20.0g of 100% pure K2CO3 in 5.0Liters of aqueous solution at the 25C.
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As well, suppose that diffraction effects, instead of atmospheric turbulence, limit the resolving power of the telescope. Determine the maximum distance which these stars could be from the earth.
Is it correct to say that the only ions an acidic solution contains are H+ ions and that the only ions a basic solution contains are OH- ions? If not what would the correct descriptions of such solutions be?
How about if the temperature was 60 degrees Celsius? At 10 degrees Celsius, which is more concentrated, a saturated solution of potassium nitrate or a saturated solution of potassium chloride?
What do these observations tell us about the nature of the DDT molecules? The pesticide DDT concentrates in the fat of animals and tends to remain in the soil despite heavy rain that washes away other contaminants.
At the 1% level of significance, give the associated critical statistic accurate to two decimals.
Which particle will move un-deflected through the field if the Alpha particles having speed 1000m/s to2000m/s enters into a velocity selector where the electric intensity is 300 V/m and the magnetic induction of .02T.
Suppose your computer does not start one morning and you know that by using the scientific method you might not only calculate the cause of the problem but by acting on your hypotheses you might get the computer running again.
How can find the emf formed in the rod when a metal rod of length 0.25m is moving at the speed of 0.5m/s in a direction perpendicular to a 0.25T magnetic field.
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