<h2>Answer:</h2>
Given data:
Volume of solution: 500 ml
Mass of 10 ml solution: 10.7 g
Density of whole solution: ?
<h3>Solution:</h3>
Mass of 500 ml solution : 10.7/10 * 500 = 535 g
Density = Mass/ volume
<u>Putting values in formula :</u>
D = 535/500 = 1.07 g/ml
Hence Density = 1.07 g/ml
Coal releases carbon dioxide when burned. The reaction looks like this:
C(s)+O₂(g)→CO₂(g)
I hope this helps. Let me know in the comments if anything is unclear.
Answer:
It is a pure substance. Magnesium is an element.
57 degrees celcius is equal to 330 degrees kelvin
67.88 kPa is equal to 67880 Pa
85.3 liters is equal to 0.0853 m^3
Now, the equation we will use to solve this question is:
PV = nRT where:
P is the pressure of gas = 67880 Pa
V is the volume of gas = 0.0853 m^3
n is the number of moles we are looking for
R is the gas constant = 8.31441 J K-1<span> mol</span><span>-1
T is the temperature of gas = 330 degrees kelvin
Substitute with the givens in the above equation to get n as follows:
n = (PV) / (RT)
n = (67880*0.0853) / (8.31441*330)
n = 2.11 moles</span>
Answer:
Bronsted-Lowry acid
Explanation:
Bronsted-Lowry Base -
According to Bronsted-Lowry theory of acids and bases:
Acids are those substances which donate proton in the solution whereas bases are those substances which accept proton in the solution.
Consider an example,
HCO3- behave as base as it accepts proton in the reaction whereas HOH behaves as acid as it releases proton.
According to Lewis theory of acids and bases:
Acids are electron acceptor and bases are electron donar. Acids are generally electron deficient species whereas Lewis are chemical species having lone pair of electrons.
For example, AlCl3 is behave as Lewis acid because of being electron deficient species.
NH3 is a Lewis base because of presence of lone pair of electrons.
Therefore, among given options, Bronsted-Lowry acid is the correct option.
