Answer:
false
Explanation:
there are more than 2 forces of nature that change the environment and landforms
To express the value 385 500 in scientific notation with 1 significant figure we have to move the decimal point to the left until we're left with a number between 1 and 10:
385500.0
38550.00 (1 space)
3855.000 (2 spaces)
385.5000 (3 spaces)
38.55000 (4 spaces)
3.855000 (5 spaces)
The number of spaces we moved to the left, is going to be the exponent of the number 10 that we are going to multiply to that number
3.855000*10⁵
Finally, we round the number so we have only one number different from 0 and this is the number expressed with scientific notation to 1 significant figure:
<u>4.0 * 10⁵</u>
<u></u>
Have a nice day!
#LearnwithBrainly
For this problem, we are simply asked to convert from units of moles to units of mass. To do this, we need a factor to multiply to the original value. We will be using the molar mass of the compound. For CH4, the molar mass would be 16 g/mol. We do as follows:
mass = 0.35 mol CH4 ( 16 g / 1 mol) = 5.6 g CH4
Therefore, the correct answer is the second option.
Answer:
Real relationship goals in chemistry is simple "emotion" that two people get when they share a special connection.
Answer:
The reaction is:
H⁺
CaCO₃ ⇄ Ca²⁺ + CO₃ ⇄ HCO₃
The standard free energy change is ΔG = ΔH - TΔS
Explanation:
Limestone is a mineral familiar with calcium carbonate, and being very common, the acid present in acid rain dissolves it reacting with carbonate, since the acids present in acid rain are characterized by being highly soluble in water and are also strong acids. The reaction is as follows:
H⁺
CaCO₃ ⇄ Ca²⁺ + CO₃ ⇄ HCO₃
The spontaneity of the reaction is equal to:
ΔG = ΔH - TΔS
The sign of the standard free energy changes from positive to negative.