![subject](/tpl/images/cats/himiya.png)
Chemistry, 22.09.2019 15:10 cruzhazeL999
1.) how can atomic number and mass number be used to find the numbers of protons, electrons, and neutrons?
2.) an atom is identified as platinum-195
a. what does the number represent?
b. symbolize this atom using superscripts and subscripts.
3.) how are isotopes of the same element alike? how are they different?
4.) determine the number of protons, electrons, and neutrons in each of the five isotopes in zinc.
5.) list the number of protons, neutrons, and electrons in each pair of isotopes.
a.) 6/3li, 7/3li
b.) 42/20ca, 44/20ca
c.)78/34se, 80/34se
6.) the atomic masses of elements are generally not whole numbers. explain why.
*you do not need any more than one sentance for #1, #3, and #6*
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 05:30
Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 10:30
Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?
Answers: 3
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
You know the right answer?
1.) how can atomic number and mass number be used to find the numbers of protons, electrons, and neu...
Questions
![question](/tpl/images/cats/mkx.png)
Arts, 08.01.2021 22:50
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 22:50
![question](/tpl/images/cats/en.png)
English, 08.01.2021 22:50
![question](/tpl/images/cats/en.png)
English, 08.01.2021 22:50
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 22:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
History, 08.01.2021 22:50
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 22:50
![question](/tpl/images/cats/istoriya.png)
History, 08.01.2021 22:50
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/en.png)
English, 08.01.2021 22:50
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 22:50
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
Physics, 08.01.2021 22:50