Answer:
The density in g/cm3 is 1.9333(put a line above the 3's to show it's repeating).
And no it is not gold because the density of gold in g/cm3 is 19.3.
Explanation:
Divide the mass by the volume in order to get an object's Density.
so, 23.2 divided by 1.20 mm3
=1.93333333 g/cm3
That is the density then you find out the density of gold in grams per cubic centimeter, that is 19.3 g/cm3
For example, gold will always have a density of 19.3 g/cm3; if a mineral has a density other than that, it isn't gold.
Answer:
732.0601 mmHg
Explanation:
Given data:
Pressure = 97.6 KPa
Given pressure in mmHg = ?
Solution:
Kilo pascal and millimeter mercury both are units of pressure.
Kilo pascal is denoted as "KPa"
Millimeter mercury is denoted as " mmHg"
Kilo pascal is measure of force per unit area while also define as newton per meter square.
It is manometric unit of pressure. It is the pressure generated by column of mercury one millimeter high.
Conversation of kilopascal to mmHg:
97.6 × 7.501 = 732.0601 mmHg
The solubility of a gas in a solvent increases as pressure increases.
This relationship explains why when you open a can of soda it bubbles since the contents of a soda can is under pressure and when you open the can the contents is depressurized. This depressurization causes the dissolved CO2 in the can to bubble out of solution since the solubility of the gas decreases.
I hope this helps let me know if you need anything to be explained further.
Answer:
CH4 + 2O2 --> CO2 + 2H2O
Explanation:
CH4 + O2 --> CO2 + H2O
The overall aim of balancing any chemical equation is to make sure that the number of moles of atoms (as in this case) in the reactant section equals that in the product phase.
In this problem, we have three atoms; Carbon, Hydrogen and Oxygen.
Reactant Section;
Number of Carbon = 1
Number of Hydrogen = 4
Number of oxygen = 2
Product Section;
Number of Carbon = 1
Number of Hydrogen = 2
Number of oxygen = 3
The following equations would show increase in the coefficients of the compounds in order to balance the reaction.
CH4 + O2 --> CO2 + 2H2O (2 is added to H20 to make number of H = 4)
Currently,
Reactant Section;
Number of Carbon = 1
Number of Hydrogen = 4
Number of oxygen = 2
Product Section;
Number of Carbon = 1
Number of Hydrogen = 4
Number of oxygen = 4
We are left with a deficit of two oxygen atoms; This is catered for by adding a 2 in the O2 of the reactanct section.
CH4 + 2O2 --> CO2 + 2H2O
Reactant Section;
Number of Carbon = 1
Number of Hydrogen = 4
Number of oxygen = 4
Product Section;
Number of Carbon = 1
Number of Hydrogen = 4
Number of oxygen = 4
With this, the equation is now balanced.
