Answer:
The shutting down of schools across the U.S is essential because although most children do not appear to suffer much when they contract the virus they can still spread it. Adults can be given instructions on how to prevent person-to-person transmission, and can be relied upon to follow those instructions to varying degrees, but it’s almost impossible to get children, especially younger ones, to do so.
Explanation:
I believe it is "There are low energy orbitals which have not been filled to hold the maximum number of electrons" because it went from 2p5 to 3s2 and it was supposed to go from 2p6 to 3s2.
I hope this helps
Answer & explanation:
SI units are the metric system and the most commonly used measurement system in the world. Some examples of these units you may find around your home are:
Pencil lead size measured in millimeters. (Ex. 0.7mm)
Microwaves, you put your food in for a number of seconds. Any other device used to time things also does this, such as a stopwatch.
A ruler or tape measure will measures in centimeters or meters usually.
A balance or scale may be used to measure mass in grams.
Solid products like antiperspirant, lipstick and other solid makeup products are usually measured in grams.
Solid foods such as butter are usually measured in grams.
Information about the contents of food found on the nutrition facts label are usually measured in grams or milligrams. (Ex. 3g of saturated fat)
The answer is that "<span>Ag+</span> ion combines with the chloride ion to form a precipitate".
Silver chloride is formed in the form of precipitates, Ag⁺ is a cation and Cl⁻ is an anion so both ions attract each other and combines to form AgCl.
The equation for the ionic reaction that occurs is;
<span><span>Ag</span></span>⁺(aq)+Cl⁻(aq)→AgCl(s)
Answer:
22.656 grams of oxygen gas are there in a 2.3L tank at 7.5 atm and 24° C
Explanation:
An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law:
P * V = n * R * T
where R is the molar constant of the gases and n the number of moles.
In this case you know:
- R= 0.082
- T= 24 °C= 297 °K (being 0°C=273°K)
Replacing:
Solving:
n=0.708 moles
Knowing that oxygen gas is a diatomic gas of molecular form O₂ and its mass is 32 g / mole, you can apply the following rule of three: if 1 mole contains 32 grams, 0.708 moles, how much mass will it have?
mass= 22.656 grams
<u><em>22.656 grams of oxygen gas are there in a 2.3L tank at 7.5 atm and 24° C</em></u>
