Sabendo que A Densidade do Metal De Chumbo e 11,3/cm3 means Knowing that the density of lead Metal and 11,3/cm3.
Explanation:
<h3>Given alka - seltzer and a flash, students design and conduct an experiment to prove the law of conservation of mass.</h3>
Halogens are elements that can be found in group 7 of the periodic table. They have 7 electrons in their outer shell and thus can form only a single covalent bond with other elements. Examples of halogens include chlorine, bromine and fluorine. A carbon compound that is covalently bonded with chlorine or bromine is called a halocarbon.
Answer:
The answer to your question is: pressure is expressed in atmosphers.
Explanation:
Data
R = 0.0821
Ideal gas constant
R = 0.08205 atm l / mol °K
To determine the answer above, assume that the gases behave as ideal and that we only need to compare the number of moles.
For letter A. there are 5 moles of H2 gas.
For letter B, convert the amount in gas to moles by dividing it by 222 g/mol. This gives an answer of 0.0225 moles
For letter C, the given amount is Avogadro's number which corresponds to 1 mole.
Thus, the answer is letter A.
