Determine whether the following vectors are linearly independent in R2: (a) 2 1 , 3 2

Chemistry 11
A mixture of NaBr and \(\mathrm{Na}_{2} \mathrm{SO}_{4}\) contains 29.96 percent Na by mass. Calculate the percent by mass of each compound in the mixture.

Physics for Scientists & Engineers with Modern Physics 4
Suppose that electrical attraction, rather than gravity, were responsible for holding the Moon in orbit around the Earth. If equal and opposite charges Q were placed on the Earth and the Moon, what should be the value of Q to maintain the present orbit? Use data given on the inside front cover of thi

Chemistry: Matter & Change 1
Aluminum hydroxide (Al(OH ) 3) is often present in antacids to neutralize stomach acid (HCl). The reaction occurs as follows: Al(OH ) 3(s) + 3HCl(aq) AlC l 3(aq) + 3 H 2O(l). If 14.0 g of Al(OH ) 3 is present in an antacid tablet, determine the theoretical yield of AlC l 3 produced when the tablet r

Organic Chemistry 8
How many signals are produced by each of the following compounds in its a. 1H NMR spectrum? b. 13C NMR spectrum?

Biology: The Dynamic Science 5
Compare and contrast the functions of a land plants root and shoot systems.

Chemistry for today : general, organic, and biochemistry 9
A sample of starch is found to have a molecular weight of \(2.80 \times 10^{5} \mathrm{u}\). How many glucose units are present in a molecule of the starch?

Physical Science 11
The law of conservation of mass means that a. atoms are not lost or destroyed in a chemical reaction. b. the mass of a newly formed compound cannot be changed. c. in burning, part of the mass must be converted into fire in order for mass to be conserved. d. molecules cannot be broken apart because