is equal to 0°C is the answer :)
topaz
talc
diamond
graphite
Hi there, thanks for asking a question here on Brainly!
The hardest known mineral in this planet is the diamond.
Answer: Letter C ✅
Hope that helps! ★
A.MgCy
B.MnCN
C.Mg(CN)2
D.MgCN
2. What is the correct formula for dinitrogen pentoxide?
A.2NO5
B.N2O5
C.DnPo
D.NO2.5
3. What is the correct formula for titanium (III) perchlorate?
A.TiPc
B.Ti3(ClO)4
C.Ti3ClO4
D.Ti(ClO4)3
4. What is the correct formula for nickel (III) nitrate?
A.Ni(NO3)3
B.Ni3NO3
C.Ni3N
D.NiN3
5. What is the correct name for Co(C2H3O2)3
A.carbon oxide hydride
B.cobalt acetate
C.cobalt triacetate
D.cobalt (III) acetate
6. What is the correct name for NiSO4?
A.nickel (I) sulfide
B.nickel (II) sulfate
C.nickel sulfide tetraoxide
D.nickel sulfate
7. What is the correct name for N2F4?
A.dinitrogen fluoride (IIII)
B.nitrogen (II) fluoride
C.dinitrogen tetrafluoride
D.nitrofluorine
8. What is the correct name for PCl5?
A.phosphorus pentachloride
B.phosphorus (V) chloride
C.chlorophosphorus (V)
D.monophosphorus heptachloride
9. Which type of bond (ionic, covalent or metallic) would Sr and Sc make?
A.ionic
B.covalent
C.metallic
D.none of the above
10. Which type of bond (ionic, covalent or metallic) would Ba and Br make?
A.ionic
B.covalent
C.metallic
D.none of the above
11. Which type of bond (ionic, covalent or metallic) would copper and tin make?
A.ionic
B.covalent
C.metallic
D.none of the above
12. Which type of bond (ionic, covalent or metallic) would N and Br make?
A.ionic
B.covalent
C.metallic
D.none of the above
(2) A has a high melting point, and B has a low melting point.
(3) A dissolves in water, and B does not dissolve in water.
(4) A does not burn in air, and B does burn in air.
The correct option is 4.
The ability of a compound to burn in air is a chemical property and can be used to distinguish between two compounds.
The statement that describes a chemical property which can be used to distinguish between compound A and compound B is: (4) A does not burn in air, and B does burn in air. Physical properties like color, melting point, and solubility (options 1, 2, and 3) are characteristics that can be observed without changing the substance into another substance. On the other hand, a chemical property describes how a substance interacts with other substances, including its flammability. Therefore, the ability or inability of a compound to burn in air would be a chemical property.
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Answer:
The ionic compound NaCl has a Face Centered Cubic unit cell
The site for atoms are Face, center and Edges corner.
Effective number of atoms
Na+
1centers + 12edges x = 4 Na+
Cl-
6face x + x8 corners = 4Cl-
This is just one unit cell effective atom, there are thousand's of such unit cells are combined to form one such structure of NaCl. The real formula of NaCl is Na4Cl4 but for simplicity we use empirical formula that is NaCl.
b. fragile
c. rich in microorganisms
d. a fast developing soil
Answer:
B
Explanation:
Fragile & Edge 2020