kennydenny4897
21.06.2019 •
Chemistry
Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?
Solved
Show answers
More tips
- G Goods and services What Useful Foods Can You Buy at Supermarkets?...
- G Goods and services How to Choose the Best Publishing House for Your Children s Book: Tips and Recommendations...
- S Science and Technology When do we change our clocks?...
- A Animals and plants How to Teach Your Parrot to Talk?...
- F Family and Home How to Remove Fading from Clothes: Tips and Tricks...
- F Food and Cooking How to Make Polendwitsa at Home?...
- F Family and Home Parents or Environment: Who Has the Most Influence on a Child s Upbringing?...
- P Philosophy Unbelievable stories of encounters with otherworldly forces...
- L Leisure and Entertainment How to Choose the Perfect Gift for Men on February 23rd?...
- H Health and Medicine How to Treat Whooping Cough in Children?...
Answers on questions: Chemistry
- C Chemistry The decomposition of 11.0 g of fe2o3 results in...
- C Chemistry What happens to the energy produced by burning gasoline in a car engine...
- C Chemistry Think about the processes that occur within your body everyday as well as those that take place within plants and animals all of which involve chemical conversion...
- C Chemistry How does air above a heated surface move?...
- C Chemistry Representen en su cuaderno la unión de los siguientes átomos mediante la estructura de Lewis. F2, (flúor) H2O (agua) NH3, (amoniaco) CH3 - CH3, (etano) CH2=CH2, (eteno)...
- C Chemistry What are the chemical changes that occur when making ice cream in a bag?...
- M Mathematics How do you Simplify -2(8-7×)...
- M Mathematics Can someone help me with this,( what is 12 as a percentage)...
- P Physics A car travels from town A to town B 70 km east, then to town C 60 km south, and then to town D 150 km west. Determine the resultant displacement of the car?...
- E English 1)How does the poet develop your identified them throughout the text?(cite textual evidence,minimum of three pieces of evidence with elaboration, 3 paragraphs minimum)2)How...
Ответ:
First row:
Number of protons: 20;Number of neutrons: 20;Atomic number: 20;Mass number: 40;Element: Calcium;Symbol: Ca.Second row:
Number of protons: 9;Number of neutrons: 10;Atomic number: 9;Mass number: 19;Element: Fluorine;Symbol: F;ExplanationThe atomic number of an atom is the same as its number of protons. There are 20 protons in the atom in the first row. Its atomic number will be 20.
The mass number of an atom is the sum of its number of protons and its number of neutrons.
There are 20 protons and 20 neutrons in the atom in the first row. What will be its mass number?The mass number of the atom in the second row is 19, meaning that there are 19 protons and neutrons in total in that atom. On top of that, the number of protons in that atom is 9. What will be the number of neutrons in that atom?Elements on an periodic table are arranged by their atomic number. What's the symbol of the element with atomic number 20? What's the symbol of the element with atomic number 9? The element with atomic number nine is fluorine. The symbol for fluorine is "F", which happens to be the label for that blank.
Ответ:
656 mmHg
Explanation:
Manometers are used to measure the pressure in a container by comparing it to normal atmospheric pressure.
First convert the atmospheric pressure to mmHg
1 torr = 1 mmHg
Therefore, the atmospheric pressure = 742 mmHg
Since the arm connected is higher than the level of the Mercury open to the atmosphere, then the gas pressure is lower than the atmospheric pressure.
Hence,
Pgas = Patm - change in height
Pgas = 742 mmHg - 8.6 cmHg
Balance the unit: 10 mm = 1 cm
Then,
Pgas = 742 mmHg - 86 mmHg
Pgas = 656 mmHg
The gas pressure in the container is 656 mmHg.