Answer : In lower concentrations, salts generally dissolve.
Explanation :
As we know that the solution is made by the combination of the solute and the solvent.
Solute is the substance which dissolved in the solvent and the solvent is the substance or liquid that dissolves the solute.
In the lower concentrations, the amount of solute is less than the solvent that means the more amount of solute can be dissolves into the solvent.
In the higher concentrations, the amount of solute is more than the solvent that means the more amount of solute can not be dissolves into the solvent.
Hence, in lower concentrations, salts generally dissolve.
pH is a scale used to measure the acidity or alkalinity of an aqueous solution. It can be used to calculate the amount of hydronium ions in the solution. It is expressed as the negative logarithm to the base 10 of the concentration.
pH = -log [H+]
2.0 = -log [H+]
[H+] = 0.01 M
b.bromine
c.carbon
d.oxygen
The correct option is A.
The elements in the periodic table are arranged into groups and columns on the basis of their atomic number. Elements with similar number of electrons in their outermost shells fall in the same group of the periodic table. There are some properties of the elements that changes both in the periods and the groups of the periodic table and one of these is conductivity. Conductivity increases across period 3 from sodium to aluminium and then decrease to silicon. Thus, sodium is a good conductor of electricity.
Probability
Degree
Expected occurrence
Identification
Answer:
Probability
Explanation:
The frequency of an event is a measure of how often the event occurs within a given time period.
Explanation:
The frequency of an eventrefers to how often the event occurs within a given time period. It is a measure of the rate at which the event happens. Frequency can be calculated by dividing the number of times the event occurs by the total time period. Probability, on the other hand, is a measure of the likelihood of an event happening.
For example, if a student attends class 4 days a week, the frequency of attending class is 4/7 or 0.57. Probability, on the other hand, refers to the likelihood of an event occurring. It is a measure of the chances of the event happening. Probability is expressed as a number between 0 and 1, where 0 means the event will not happen and 1 means the event will definitely happen.
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Answer:
85g
Explanation:
To convert the moles of a substance to grams we need to know the molar mass of the substance. We, as first, must obtain the molar mass of (NH₄)₂S as follows:
There are 2 atoms of N, 8 of H and 1 of S:
N = 2*14g/mol = 28g/mol
H = 8*1g/mol = 8g/mol
S = 1*32g/mol = 32g/mol
Molar mass: 68g/mol
That means 1 mole of (NH₄)₂S has a mass of 68g.
1.25moles have a mass of:
1.25moles * (68g/mol) =