0
Add your answer:
Earn +20 pts
What does selenium and oxygen combined together make?
Selenium dioxide, SeO2
How many protons and neutrons does selenium have?
This isotope is shown in hyphen notation: on the left side of the hyphen is the isotope's name, and on the right side is the isotope's mass number. The mass number of an element is the total number of particles in the nucleus (the number of protons + neutrons an atom has).In order to get the number of protons an atom has, find its atomic number on the periodic table. Selenium's atomic number is 34.... wait, this doesn't make any sense. If it has a mass number of 30 and an atomic number of 34, it has -4 neutrons.I'm sorry, but it looks like you have the problem wrong.
Why does barium make flames green?
It is the characteristic colour of a barium flame.
How many grams of barium chloride are needed to make 100. grams of barium sulfate?
89.3
How does barium occur naturally?
Can be used in Fluoirescent tubes and also make Paint, Bricks, Tiles, Glass and Rubber.
How many particles make up a barium?
A barium atom has 56 protons, 56 electrons, and usually 81 or 82 neutrons. Therefore, a barium atom is typically composed of 137 or 138 particles.
How can you test a solution for the barium ions?
One common test for barium ions is to add a solution of sodium sulfate (Na2SO4). If barium ions are present, a white precipitate of barium sulfate (BaSO4) will form. Another test involves using a flame test; when barium ions are heated in a flame, they give a pale green color.
What elements make up the compound barium hydroxide?
Barium hydroxide is composed of one barium ion (Ba2+) and two hydroxide ions (OH-), resulting in the chemical formula Ba(OH)2.
What process is used to make red glassware?
Red glassware is made by a process called coloring by ions. The ions cadmium, selenium and sulphur together makes bright shades of red and orange depending on quantities used.
Does barium plus barium make a reaction?
No.
What does selenium and oxygen combined together make?
Selenium dioxide, SeO2
How many protons and neutrons does selenium have?
This isotope is shown in hyphen notation: on the left side of the hyphen is the isotope's name, and on the right side is the isotope's mass number. The mass number of an element is the total number of particles in the nucleus (the number of protons + neutrons an atom has).In order to get the number of protons an atom has, find its atomic number on the periodic table. Selenium's atomic number is 34.... wait, this doesn't make any sense. If it has a mass number of 30 and an atomic number of 34, it has -4 neutrons.I'm sorry, but it looks like you have the problem wrong.
Why does barium make flames green?
It is the characteristic colour of a barium flame.
How can you identify Sulphate anions in a unknown solution?
You can identify sulfate ions in an unknown solution by adding a few drops of barium chloride solution. If a white precipitate forms, it indicates the presence of sulfate ions, as barium sulfate is insoluble and will precipitate out of solution.
How many grams of barium chloride are needed to make 100. grams of barium sulfate?
89.3
Why is selenium used in xeography?
To make a copy ,the image of the material to be copied is projected onto the selenium coated surface.
What was formed when one barium atom combines two sodium atoms?
When one barium atom combines with two sodium atoms, it forms a compound called barium sodium diselenide (BaNa2Se2). This compound consists of one barium atom and two sodium atoms bonded to each other, along with selenium atoms.
