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Verdich [7]
3 years ago
12

What is melting point​

Chemistry
2 answers:
Shkiper50 [21]3 years ago
7 0

Melting point depends on the object that’s melting.

Anarel [89]3 years ago
6 0

the temperature at which a given solid will melt. from google

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How a mass spectrometer works
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It turns atoms into ions then seperates them through a electric the magnetic field. they then fan out into a spectrum.
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What is the volume needed?<br> mL of 4.00 M H2SO4
lorasvet [3.4K]

Answer:

Explanation:

her is the answer hope this helps

7 0
4 years ago
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Help i’ll give u points
Bond [772]

Answer:

60ug

Explanation:

If it has experienced two half lives, that means it has been halved twice. in that case, to undo it, just multiply it by two twice. 0.15ug * 2 = 0.30ug. 0.30ug * 2 = 0.60ug. Hope this helps.

8 0
3 years ago
Give the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of lithium sulfide and copper (II)
Aloiza [94]

Answer:

2Li^+_{(aq)}+S^{2-}_{(aq)}+Cu^{2+}_{(aq)}+2NO_3^{-}_{(aq)}\rightarrow CuS_{(s)}+2Li^+_{(aq)}+2NO_3^{-}_{(aq)}

Explanation:

Complete ionic equation : In complete ionic equation, all the substance that are strong electrolyte and present in an aqueous are represented in the form of ions.

The balanced molecular equation will be,

Li_2S_{(aq)}+Cu(NO_3)_2_{(aq)}\rightarrow CuS_{(s)}+2LiNO_3_{(aq)}

The complete ionic equation in separated aqueous solution will be,

2Li^+_{(aq)}+S^{2-}_{(aq)}+Cu^{2+}_{(aq)}+2NO_3^{-}_{(aq)}\rightarrow CuS_{(s)}+2Li^+_{(aq)}+2NO_3^{-}_{(aq)}

4 0
3 years ago
Which element among these has the most negative electron affinity (i.e., has most exothermic electron affinity). A. H B. Li C. C
OleMash [197]

Answer:

D. F

Explanation:

Electron affinity is defined as the change in energy (in kJ/mole) of a neutral atom (in the gaseous phase) when an electron is added to the atom to form a negative ion. In other words, the neutral atom's likelihood of gaining an electron.

The electron affinity values of the following elements is given;

Electron Affinity of Hydrogen is 72.8 kJ/mol.

Electron Affinity of Lithium is 59.6 kJ/mol

electron affinity of carbon is 153.9 kJ mol‑1

Electron Affinity of Fluorine is 328 kJ/mol

The electron affinity of neon is 0 kJ mol‑1.

When nonmetals gain electrons, the energy change is usually negative because they give off energy to form an anion (exothermic process); thus, the electron affinity will be negative.

Nonmetals have a higher electron affinity than metals, meaning they are more likely to gain electrons than atoms with a lower electron affinity.

That explains why florine seems to have the highest electron affinity value.

7 0
4 years ago
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