Select the non-metals. N Br Ca Na Fe
Answers
N,Br
- The elements which can donate their electrons are called metals
- The elements which can adopt other's electrons to acquire noble gas configuration are called non metals
Related Questions
Which of the following structural features is possessed by aldehydes but not ketones? A.) at least one hydrogen atom is bonded to the carbonyl carbon atom B.) At Least one hydroxyl group is bonded to the carbonyl carbon atom C.) the carbonyl carbon atom is part of a ring structure D.) the carbonyl carbon atom is bonded to two other carbon atoms
Use the Periodic Table.Choose the correct electron configuration of carbon using the data shown in the electron configuration chart. 1s 22s 22p1 1s22s22p4 1s 22s 2p2 1s 22s 22p2
How many electron are in 56fe 3
Which law states that the volume and absolute temperature of a fixed quantity of gas are directly proportional under constant pressure conditions?
b. 3.46 mol
c. 31.2 mol
d. 52.0 mol
just the letter
Answers
The number moles of carbon dioxide 31.2 moles will be produced when 10.4 mol of propane gas is burned in excess oxygen.
What is moles?
A mole would be the amount of a material that includes exactly 6.02214076 × of the particular chemical elementary constituents.
It is known that the formula of propane is .
The chemical reaction of propane.
+
→
It can be understand that, the ratio of propone and carbon di-oxide is 1:3.
The moles of propane = 10.4 mol
So, number of moles of = 10.4 mol × 3 =31.2 mol.
Therefore, the number of moles of carbon di-oxide will be 31.2
Hence, the correct answer will be option (C).
To know more about moles.
#SPJ2
Answers
The empirical formula of the compound containing 79.8% carbon and 20.2% hydrogen is CH₃
Data obtained from the question
- Carbon = 79.8%
- Hydrogen= 20.2%
- Empirical formula =?
How to determine the empirical formula
Divide by their molar mass
C = 79.8 / 12 = 6.65
H = 20.2 / 1 = 20.2
Divide by the smallest
C = 6.65 / 6.65 = 1
H = 20.2 / 6.65 = 3
Thus, the empirical formula of the compound is CH₃
Learn more about empirical formula:
#SPJ2
Answers
These joints are made of cartilage, which is a flexible connective tissue. Cartilage is less rigid than bone, but doesn't have as much flexibility as muscle.
Answers
A mixture can be separated into pure substances with the utilization of several techniques of physical methods like simple distillation, centrifugation, sedimentation, etc.
What is the function of simple distillation?
Simple distillation may be defined as a type of separation technique that involves the separation of solvent from a solution. This technique is utilized for purifying the liquids that comprise either nonvolatile impurities such as sand, salt, and other very small amounts of particles.
Apart from simple distillation, evaporation is also used to eliminate water or any liquid substance from a mixture. It makes the solution or mixture dry with the absolute absence of water.
The Centrifugation technique is used to separate the particles on the basis of their size, shape, density, viscosity, and rotor speed.
Therefore, with the utilization of separation techniques, one can easily separate a mixture into pure substances.
To learn more about Separation techniques, refer to the link:
#SPJ2
Answer:
mixture can be separated into pure substances by simple distillation
Answers
Answers
According to the mole concept, there are 1.8074 moles in 77.1 g of chlorine.
What is a mole?
Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.
It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Number of moles is calculated as, mass/molar mass
Substituting values in formula gives, number of moles=77.1/70.90=1.8074
Thus, there are 1.8074 moles in 77.1 g of Cl₂.
Learn more about mole,here:
#SPJ2