Here is the answer. The reason why staph is more resistant to high salt concentration is that <span> it is a Gram Positive cocci. These G+ bacteria are well known to be less susceptible to harsher environments than G- bacteria. Hope this answers your question. Have a great day ahead!</span>
Because more than one substance was released (following a color change signifying a chemical reaction), the sample was indeed, a compound.
It is easier to determine this if we draw the structural formula of lactic acid as shown in the attached picture. There are three functional groups in lactic acid: carboxyl group, hydroxyl group, and the parent alkane chain. Any of the hydrogens in the alkane chain is the least acidic. Then, it is followed by the H in the hydroxyl group. The most acidic is the H in the carboxyl group.
1 mole ------------- 6.02 x 10²³ atoms
0.70 moles -------- ( atoms zinc )
atoms platinum = 0.70 x ( 6.02 x 10²³ ) / 1
<span> = </span>4.2 x 10²³ atoms zinc
<span>hope this helps!</span>