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Cerrena [4.2K]
3 years ago
9

Which of these is a compound? A. Steel B. Suger C. Air D. Nitrogen

Chemistry
2 answers:
Andru [333]3 years ago
4 0
The correct answer is air because water and oxidant are also a compound
Irina18 [472]3 years ago
3 0

Answer:

A. Steel

Explanation:

Steel is a mixture of iron and carbon fused together with one or more other metals or nonmetals. Because steel is a mixture rather than a chemical compound, steel does not have a set chemical compound formula.

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Lien made this table to organize her notes on the properties of acids and bases. Which property is in the wrong column? conduct
OLEGan [10]
Tatses bitter is the anwser i did the test
8 0
3 years ago
Read 2 more answers
Calculate to three significant digits the density of chlorine pentafluoride gas at exactly and exactly . You can assume chlorine
slega [8]

Answer:

Density is 6.16g/L

Explanation:

<em>... at exactly -15°C and exactly 1atm...</em>

<em />

Using general gas law:

PV = nRT

We can find density (Ratio of mass and volume) in an ideal gas as follows:

P/RT = n/V

<em>To convert moles to grams we need to multiply the moles with Molar Weight, MW:</em>

n*MW = m

n = m/MW

P/RT = m/V*MW

P*MW/RT = m/V

<em>Where P is pressure: 1atm;</em>

<em>MW of chlorine pentafluoride: 130.445g/mol</em>

<em>R is gas constant: 0.082atmL/molK</em>

<em>And T is absolute temperature: -15°C+273.15 = 258.15K</em>

<em />

Replacing:

P*MW/RT = m/V

1atm*130.445g/mol / 0.082atmL/molK*258.15K = m/V

6.16g/L = m/V

<h3>Density of the gas is 6.16g/L</h3>

<em> </em>

7 0
3 years ago
Enough of a monoprotic weak acid is dissolved in water to produce a 0.0172 M solution. If the pH of the resulting solution is 2.
Mumz [18]

Answer:

9.7 x 10⁻⁴

Explanation:

              HA     ⇄           H⁺     +        A⁻

C(eq)   0.0174             10⁻²·³⁹         10⁻²·³⁹

                              =0.0041M     =0.0041M

Ka = [H⁺][A⁻]/[HA] = (0.0014)²/(0.0174) = 9.7 x 10⁻⁴

8 0
3 years ago
Explain why alkali metals do not form divalent ions.​
Helga [31]
Alkali metals have only one electron in their outermost energy levels , so (they can loose one electron to) they form a mono positive ion only . That's why alkali metal do not from dispositive ions .

Hope that helps:)
7 0
3 years ago
1. Which substance dissolves in water to give a solution with a pH greater
ra1l [238]

Answer: sulphur dioxide

Explanation:

6 0
2 years ago
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