Metals that burn easily on contact with air, such as magnesium or lithium
Effusion is the escape of a gas through a small hole.
Graham Law states that the speed of effusion is inversely related to the square root of its molar mass:
effusion speed = K * 1 / √ molar mass)
=> effusion speed of gas A √(molar mass of gas B)
--------------------------------- = ----------------------------------
effusion speed of gas B √(molar mass of gas A)
=> efussion speed of Ne √(83.8)
----------------------------- = ---------- = 2.04
effusion speed of Kr √(20.18
=> effusion speed of Ne = 2.04 * effusion speed of Kr.
Answer: approximated twice.
D. Areas of high pressure to areas of low pressure.
_____________________________
_____________________________
<span>Although the nucleus of an atom is very important, it is the electrons of the atom that determine its chemical properties.
Number of electrons of an atoms (the number of electrons in the outermost level mostly) determine the type of the element (whether it is a metal, metalloid or non-metal).
Based on this, the types of bonds that the atom can form (whether ionic or covalent) is determined, the type of reactions that the element can form is known and the elements that can react with it are also know.</span>
The percentage yield of the new production technique is 82.8%
<h3>What is the percentage yield?</h3>
Production is the procedure by which finished products are obtained form the raw materials. The production process involves the passing of raw materials through a certain procedure that involves the use of certain machines and equipment to give us the required products.
We are told in the question that there are three shifts;
Shift 1 produces 4562 grams
Shift 2 produces 5783 grams
Shift 3 produces 5247 grams
Average production from the three shifts = 4562 grams + 5783 grams + 5247 grams/3 = 5197 grams
The theoretical average yield is = 7000 grams + 7000 grams + 7000 grams/3 = 7000 grams
Now the percentage yield = actual yield/ theoretical yield * 100/1
percentage yield = 5197 grams/7000 grams * 100/1
percentage yield = 82.8%
Learn more about percentage yield :brainly.com/question/27492865
#SPJ1
