4.03 x 10²³atoms
Explanation:
Given parameters:
Number of moles of TiCl₄ = 0.67moles
Unknown:
Number of atoms of Ti = ?
Solution:
In the compound TiCl₄;
we have :
1 mole of Ti atoms can be found in 1 mole of TiCl₄compound
In 0.67moles of TiCl₄, we are going to have 0.67moles of Ti
Now;
1 mole of any substance = 6.02 x 10²³atoms
0.67mole of Ti = 0.67 x 6.02 x 10²³atoms = 4.03 x 10²³atoms
The number of atoms is 4.03 x 10²³atoms
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Number of moles brainly.com/question/1841136
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B A C ( Blood Alcohol Content ) of 0.10 means that there are 0.10 g of alcohol for every dl of blood.
5 L = 50 dl
50 * 0.10 g = 5 g
In his blood is circulating 5 grams of alcohol.
Answer:
See Explanation
Explanation:
10) From the options provided for this question, gamma particle is the most energetic. Recall that gamma rays are high energy electromagnetic radiation which are capable of causing a high degree of ionization in matter.
11) The bombardment of U-235 with neutrons leads to the reaction;
![U\frac{235}{92} + n\frac{1}{0}---> I\frac{138}{53} + Y\frac{95}{39} +3n \frac{1}{0}](https://tex.z-dn.net/?f=U%5Cfrac%7B235%7D%7B92%7D%20%20%2B%20n%5Cfrac%7B1%7D%7B0%7D---%3E%20I%5Cfrac%7B138%7D%7B53%7D%20%20%2B%20Y%5Cfrac%7B95%7D%7B39%7D%20%2B3n%20%5Cfrac%7B1%7D%7B0%7D)
Hence
a = 92, b= 95, c= 53
12) In positron emission, a proton is transformed into a neutron. The mass number of the daughter nucleus is the same as its parent but the atomic number decreases by 1.
Hence;
![Th\frac{231}{90} -----> e\frac{1}{0} +Ac \frac{231}{89}](https://tex.z-dn.net/?f=Th%5Cfrac%7B231%7D%7B90%7D%20-----%3E%20e%5Cfrac%7B1%7D%7B0%7D%20%2BAc%20%5Cfrac%7B231%7D%7B89%7D)
Isotopes of atoms d. have the same number of protons but a different number of neutrons.