Foliated rocks are distinguished by layers, banding, or flakiness. Foliated rocks are given names depending their mineralogy and texture. These names can be slate, Phyllite and Schist. These rocks are formed within the Earth's interior under extremely high pressures that are unequal.
Answer:
Mass percent of silicon = 46.75% (Approx)
Explanation:
Given:
Mass of silicon = 0.389 g
Mass of silicon dioxide = 0.832 g
Find:
Mass percent of silicon
Computation:
Mass percent of silicon = Mass of silicon / Mass of silicon dioxide
Mass percent of silicon = [0.389 g / 0.832 g]100
Mass percent of silicon = 46.75% (Approx)
Answer: The mass of the sample having 2.1 kg of will be
Explanation: We are given a sample of sodium bicarbonate having mass 2.1 kg
To convert this into nano-grams, we use the following conversions:
1 kg = 1000 grams
and
Converting 2.1 kg to nano-grams using above conversions:
Answer:
The answer is 30.5
Explanation:
<h3><u>Given</u>;</h3>
<h3><u>To</u><u> Find</u>;</h3>
Now,
1 foot = 12 inch
So,
12 × 2.54 = 30.48
Here, 30.48 in 3 SF will be 30.5
Thus, The answer is 30.5
<u>-TheUnknownScientist</u><u> 72</u>
Answer:
B) 2Crº + 6e- --> 2Cr3+
Explanation:
The process of oxidation is where electrons are lost. Thus, out of the 2 ions that change charge(Cr and Cu), we must choose the one where the oxidation number increases(which means electrons are lost). Cr goes from an oxidation number of 0 to an oxidation number of 3+, while Cu goes from an oxidation number of 2+ to 0. Thus, we are looking at the half reaction for Cr. Half reactions never have subtracting electrons, so the answer must be B. I am assuming that last plus should be a -->