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Limestone is another form of CaCO3. Sandstone is primarily silica or sand SiO2. Because of observations made in today's experiment, explain a test that would permit you to distinguish between limestone and sandstone
H2O is amphoteric meaning it can act as both a Bronsted acid and a Bronsted base.Show that H2O really is amphoteric by writing the relevant equations
Determine the molecular formula for the unknown if the molecular mass is 60.0 amu and the empirical formula is CH2O.
117 gram sample of a metal reacts with hyrdochloric acid to produce 36.3 ml of dry hydrogen gas measured at stp. what
If the concentration of bromide ion in a saturated solution in equlibrium with PbBr2 solid is determined to be .0125M what is the solubility of PbBr2
When you are calculating absorbance, and you have Abs/Time, are there units in the final answer. Or would there be no units. We are assuming Absorbance has no units, but does it make sense for the final answer, the rate of reaction to be in second..
Is the melting of wax a physical or chemical change? from the mass measurement only,( the mass of the candle at 0 minute is 10.1g, after 30 minutes is 7.4g) how could a chemical also be proved to have occured in the burning of candle.
What is the percent yield of a reaction in which 222 g phosphorus trichloride reacts with excess water to form 141 g HCl and aqueous phosphorus acid (H3PO3)?
determine the molecular formula for ibuprofen a common headache remedy. analysis ofibuprofen yields a molae mass of 206
Calculate the minimum energy that a bird of mass 25 g must expend in order to reach a height of 50 m.
A silver block, initially at 59.9 degree centigrade, is submerged into 100.0 g of water at 24.4 degree centigrade, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 25.6 degree centigrade. What is..
How many grams of Na3PO4 will be needed to produce 500ml of a solution that has a concentration of Na ions of 0.600M
Calculate the pH at the equivalence point for titrating 0.170 solutions of each of the following bases with 0.170 M HBr
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