Which species represents a chemical compound?
(1) N2 (3) Na
(2) NH4+ (4) NaHCO3
Answers
The species that significantly represents a chemical compound is known as NaHCO3. This is also known as Sodium bicarbonate or sodium hydrogen carbonate. Thus, the correct option for this question is D.
What is a Chemical compound?
A chemical compound may be defined as a type of chemical substance that is mainly composed of many similar molecules that contain atoms of more than one chemical element. These atoms are typically held together by chemical bonds.
According to the context of this question, Na is sodium and N2 is dinitrogen or simply nitrogen gas. Both these chemical constituents are classified as the type of chemical element. While NH4+ is a polyatomic ion which is known as an ammonium ion.
So, NaHCO3 is classified into the category of a chemical compound. This is because it mainly consists of sodium, hydrogen, carbon, and oxygen.
Therefore, the species that significantly represents a chemical compound is known as NaHCO3. This is also known as Sodium bicarbonate or sodium hydrogen carbonate. Thus, the correct option for this question is D.
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Answer:
4.) NaHCO3
Explanation:
In a compound, two or more elements are chemically combined. NaHCO3 is a compound containing the elements sodium (Na), hydrogen (H), carbon (C), and oxygen (O). N2 and Na are elements. NH4+ is the polyatomic ion ammonium.Zoom
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Please tell me the answer to the following question and if you can please explain it, if you will I'll vote your answer the brainliest and you'll receive more points. Thank you!Which of the following pairs of elements is least likely to form an ionic compound?1.) Calcium and Bromine2.) Sodium and Fluorine3.) Lithium and Chlorine4.) Magnesium and Argon
The two ends of a solenoid act likea. electrons. b. a compass needle. c. a circuit. d. poles.
Answers
Answer:
Its C. electrons have both wave-like and particle-like properties
Explanation:
Answers
M(Na₂CO₃) = molarity x volume x molar mass
M(Na₂CO₃) = 0.250 x 2.00 x 106.0
M (Na₂CO₃) = 53 g
hope this helps!
Answers
(2) Cr, Cl2, C (4) Se, Sn, Sr
Answers
Periodic table contain element of various states like solid, liquid and gases. Thus the that list of elements contains a solid, a liquid, and a gas is HF, Hg, He. Hence option A is correct option.
What is periodic table?
Periodic table is a table in which we find elements with properties like metals, non metals, and metalloids
STP means standard temperature and pressure where temperature is 273.15 K and pressure is 1 bar. It is known that only bromine (Br) and mercury (Hg) are in liquid form at STP. Whereas noble gases like He, Ne, Ar are gases in nature.
HF - solid, Hg - liquid, and He - gas
Ba - solid, - liquid, and B - solid
Cr - solid, - gas, and C - solid
Se - solid, Sn - solid, and Sr - solid
Thus, we can conclude that list of elements contains a solid, a liquid, and a gas is HF, Hg, He. Hence option A is correct option
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Answer: Option (1) is the correct answer.
Explanation:
STP means standard temperature and pressure where temperature is 273.15 K and pressure is 1 bar or 0.98 atm.
It is known that only bromine (Br) and mercury (Hg) are in liquid form at STP. Whereas noble gases like He, Ne, Ar etc are gases in nature.
Hence, given elements are differentiated as follows.
HF - solid, Hg - liquid, and He - gas
Ba - solid, - liquid, and B - solid
Cr - solid, - gas, and C - solid
Se - solid, Sn - solid, and Sr - solid
Thus, we can conclude that list of elements contains a solid, a liquid, and a gas is HF, Hg, He.
Answers
Answers
1. Nucleus
- It is the centre of the atom wherein the most of the mass exist also it consists of neutrons and protons.
2. Neutrons
- Neutrons are chargeless particles present inside of the nucleus .
3. Electrons
- Electrons are negatively charged particles revolving around the nucleus.
4. Protons
- Protons are positivity charged particles inside of nucleus. The number of protons = The number of Electrons ( here ,3) .