Two elements in the same chemical family can have the same spectrum.
a. True
b. False

Answers

Answer 1

Answer:

Answer: False (b)

Explanation: No two elements can have the same spectrum.

Related Questions

How much heat energy is needed to raise the temperature of 59.7g of cadmium from 25°C to 100°C? The specific heat of cadmium is 0.231 J/g °C.
Workers digging a tunnel through a city find someancient pots decorated with geometric designs.Which of the following tasks might they ask achemist to do? Explain your answer.a. Determine the materials used to make the pots.b. Explain what the designs on the pots represent.c. Recommend how to store the pots to preventfurther damage.
The human skeleton has 206 bones. True False
After reading “The Crisis, No. 1,” what do you think Paine means by the line, "These are the times that try men’s souls"? Cite evidence from the text to support your analysis.
Which of the following processes uses electrical charges to separate substances? a. Spectrophotometry b. Chromatography c. Centrifugation d. Electrophoresis

A laboratory requires 2.0 L of a 1.5 M solution of hydrochloric acid (HCl), but the only available HCl is a 12.0 M stock solution. How could you prepare the solution needed for the lab experiment? show all work to find your answer

Answers

Answer: The volume of stock HCl solution required to make laboratory solution will be 0.25L

Explanation:

To calculate the volume of stock solution required to make the laboratory solution, we use the equation:

$M_1V_1=M_2V_2$

where,

$M_1\text{ and }V_1$ are the molarity and volume of stock solution.

$M_2\text{ and }V_2$ are the molarity and volume of laboratory solution.

We are given:

$M_1=12M\nV_1=?L\nM_2=1.5M\nV_2=2L$

Putting values in above equation, we get:

$12* V_1=1.5* 2\n\nV_1=0.25L$

Hence, the volume of stock HCl solution required to make laboratory solution will be 0.25L

The amount of the solute is constant during dilution. So the mole number of HCl is 2*1.5=3 mole. The volume of HCl stock is 3/12=0.25 L. So using 0.25 L stock solution and dilute to 2.0 L.

How many kilograms are in a 50 pound luggage bag?

Answers

There are 23kg in a 50 luggage. Hope I helped☺️

Well... 1 pound is 0.454 kilograms so if you multiple 0.454 by 50 you will get a total of 22.68 kilograms

Which polyatomic ion is found in the compound represented by the formula NaHCO3?(1) acetate (3) hydrogen sulfate
(2) hydrogen carbonate (4) oxalate

Answers

Answer: The correct option is 2.

Explanation: Polyatomic ions are defined as the ions in which two or more elements are covalently bonded to act as a single unit. They always carry some charge.

Examples of polyatomic ions are: $OH^-$ known as hydroxide ion, $SO_4^(2-)$ known as sulfate ion

We are given a compound $NaHCO_3$ having 2 ions which are $Na^+$ and $HCO_3^-$ . these ions are named as sodium ions and hydrogen carbonate ions.

Therefore, the correct option is 2.

The correct answer is option 2. Hydrogen carbonate is the polyatomic ion in the compound given. A polyatomic ion is a charged species composed of covalently bonded atoms. Hydrogen carbonate, also known as bicarbonate, is a polyatomic ion with the charge of -1.

The student's experiment most likely demonstrates how... A. earthquakes occur along a fault
B. new crusts move at midocean ridges
C. tectonic movements cause hotspot volcanism
D. mountains are created along cracks in Earth plates

Answers

The right answer for the question that is being asked and shown above is that: "D. mountains are created along cracks in Earth plates."The student's experiment most likely demonstrates how D. mountains are created along cracks in Earth plates

Answer:d

Explanation:test

Powdered iron is magnetic, but powdered sulfur is not. What occurs when they form a mixture in a beaker at room temperature ?(1) the iron retains its magnetic properties
(2) the iron loses its metallic properties
(3) the sulfur gains magnetic properties
(4) the sulfur gains metallic properties

Answers

The iron will retain its magnetic properties it will still magnetic and sulfur will not gain the magnetic properties so t will not be magnetic

The mixture of iron sulfide formed is non-magnetic wherein iron looses its magnetic properties.

How do properties of compound differ from elements?

The properties of compound are different from those of the elements from which it is formed. The reason to this is when elements combine to form compounds ,the properties of elements are completely changed and have completely new set of properties.

When iron which has magnetic properties forms a mixture with sulfur iron sulfide is formed,which is non-magnetic.Here, the iron looses it's magnetic properties as it forms compounds with sulfur.

On combining with sulfur, compound formed is iron sulfide with no magnetic properties .Thus on moving the magnet over this mixture does not attract any iron particle towards it as the properties are completely altered when compounds are formed.

Learn more about properties of compounds ,here:

brainly.com/question/11838894

#SPJ2

If a solid, a liquid, and a gas of a substance are each in separate covered jars, then the amount of kinetic energy of the particles of the substances decreases from solid to liquid to gas.True
False