The term Rutherford gave to the positively charged particles in the nucleus of an atom was/is Proton.
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Answer:
The answer is A a chemical bond is a bond between atoms that holds them together
Answer:
one generation to the next via DNA,
Explanation:
Heritable traits are known to be passed from one generation to the next via DNA, a molecule that encodes genetic information. ... Organisms inherit genetic material from their parents in the form of homologous chromosomes, containing a unique combination of DNA sequences that code for genes.
<u>Answer:</u> The solubility of nitrogen gas in the sample is ![5.6\times 10^{-4}mol/L](https://tex.z-dn.net/?f=5.6%5Ctimes%2010%5E%7B-4%7Dmol%2FL)
<u>Explanation:</u>
We are given:
Volume percent of nitrogen gas = 80 %
To calculate the molar solubility, we use the equation given by Henry's law, which is:
![C_{N_2}=K_H\times p_{N_2}](https://tex.z-dn.net/?f=C_%7BN_2%7D%3DK_H%5Ctimes%20p_%7BN_2%7D)
where,
= Henry's constant = ![7.0\times 10^{-4}mol/L.atm](https://tex.z-dn.net/?f=7.0%5Ctimes%2010%5E%7B-4%7Dmol%2FL.atm)
= partial pressure of nitrogen gas = 1.0 atm
Putting values in above equation, we get:
![C_{N_2}=7.0\times 10^{-4}mol/L.atm\times 1.0\\\\C_{N_2}=7.0\times 10^{-4}mol/L](https://tex.z-dn.net/?f=C_%7BN_2%7D%3D7.0%5Ctimes%2010%5E%7B-4%7Dmol%2FL.atm%5Ctimes%201.0%5C%5C%5C%5CC_%7BN_2%7D%3D7.0%5Ctimes%2010%5E%7B-4%7Dmol%2FL)
Solubility of nitrogen gas in the sample = ![\frac{80}{100}\times 7.0\times 10^{-4}mol/=5.6\times 10^{-4}mol/L](https://tex.z-dn.net/?f=%5Cfrac%7B80%7D%7B100%7D%5Ctimes%207.0%5Ctimes%2010%5E%7B-4%7Dmol%2F%3D5.6%5Ctimes%2010%5E%7B-4%7Dmol%2FL)
Hence, the solubility of nitrogen gas in the sample is ![5.6\times 10^{-4}mol/L](https://tex.z-dn.net/?f=5.6%5Ctimes%2010%5E%7B-4%7Dmol%2FL)
Answer:
Indicators show changes in the pH of a solution
Explanation:
A pH meter is an instrument that measures the hydrogen-ion activity in aqueous solutions, indicating the acidity or alkalinity of the solution expressed as pH .The pH meter measures the difference in electrical potential between a pH electrode and a reference electrode, hence the pH meter is sometimes referred to as a potentiometric pH meter. Potentiometric pH meters measure the voltage between two electrodes and display the result converted into the corresponding pH value. The instrument comprises of a simple electronic amplifier and a pair of electrodes, or alternatively a combination electrode, and some form of display calibrated in pH units. It usually has a glass electrode and a reference electrode, or a combination electrode. The electrodes, or probes, are inserted into the solution to be tested.
Organic indicators are chemical species that change their colour in response to changes in the pH of the solution. This implies that the anionic and protonated forms of the indicator possess different colours. Hence the colour changes in acidic, basic and neutral solutions. The images attached indicate the colour changes in phenolphthalein and methyl orange in acidic and basic media accordingly.