276 grams of carbon in 23.0 moles
How many moles of oxygen atoms are present in 5
moles of Mg3(PO4)2
All you have to do is to create
a ratio between the molecule and the oxygen atom.
5 moles of Mg3(PO4)2 (4x2 moles
O/1 mole Mg3(PO4)2) = 40 moles of oxygen
This problem is providing us with the volume of nitric acid that is titrated with 0.18 L of 0.1-M sodium hydroxide and asks for the concentration of the acid. At the end, the result turns out to be 0.045M, according to the following.
<h3>Acid-base titrations:</h3>
In chemistry, acid-base titrations allow us to quantify the volume or concentration of an acid or base via the following equation:

Where the subscript A stands for the acid and B for the base; which means one can calculate any of the variables there by knowing the other three. This equation is based on the balanced neutralization chemical equation, which takes place between the acid and the base.
Thus, we can write the reaction between NaOH and HNO3 as:

In such a way, we can solve for the concentration of the acid as shown below:

Learn more about titration: brainly.com/question/25485091
A Non Contact Force is a force which acts on an object without coming physically in contact with it.[1] The most familiar example of a non-contact force is gravity, which confers weight.[1] In contrast a contact force is a force applied to a body by another body that is in contact with it.[1]
Answer: A rock that contains enough of a metal to be worthwhile.
Explanation:
An ore is a rock which is extracted by the process of mining. This can be purified from gangue and other particles to extract metallic minerals. A metallic mineral can be of low to high economic value.