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frozen [14]
3 years ago
11

The presence of which ion usually produces a colored solution? A. K+

Chemistry
1 answer:
notsponge [240]3 years ago
4 0
C. Fe2+ is the answer
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3. 2 HCl (aq)
tekilochka [14]

Explanation:

balance the equation ...HCl,Ba(OH) and BaCl2 are aqueous

know groups of the elements H 1+ ,Cl -,Ba 2+,OH-

write complete ionic eqution and eliminate spectator ions those appearing on both sides Cl and Ba

6 0
3 years ago
A container of carbon dioxide has a volume of 260 cm at a temperature of 22.0°C. If the
Oxana [17]

Answer:

V₂ =279.4 cm³

Explanation:

Given data:

Initial volume = 260 cm³

Initial temperature = 22.0°C

Final temperature = 44.0°C

Final volume = ?

Solution;

22.0°C (22+ 273 = 295k)

44.0°C(44+273 = 317k)

Formula:

According to Charles's law

V₁/T₁ = V₂/T₂

Now we will put the values in formula:

V₂ = V₁×T₂ / T₁

V₂ = 260 cm³ × 317k / 295k

V₂ = 82420 cm³. k  / 295k

V₂ =279.4 cm³

3 0
4 years ago
Calculate the weight of an average egg if a dozen of eggs equals an average weight of 21 ounces.
Aleonysh [2.5K]

That would be 21 / 12 = 1  3/4 ounces

4 0
4 years ago
Read 2 more answers
If the components of a liquid hydrocarbon are to be separated by fractional distillation, the components should have
sp2606 [1]
The answer is A. large differences between their boiling points
8 0
3 years ago
Which answer choice correctly describes what will happen to an element with four valence electrons if it engages in a chemical r
Andru [333]
The answer is D. It may gain or lose electrons.
6 0
3 years ago
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