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3 years ago

When an arrhenius base is dissolved in h2o, the only negative ion present in the solution is?

1 answer:

5 0

Answer is: hydroxide ions (OH⁻).
An Arrhenius base is a substance that dissociates in water to form hydroxide ions (OH⁻). <span>
For example sodium hydroxide: NaOH(aq) → Na</span>⁺(aq) + OH⁻(aq) or barium hydroxide: Ba(OH)₂(aq) → Ba²⁺(aq) + 2OH⁻(aq).
<span>According to this theory acids are substances which produce hydrogen ions in water solution.</span>

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Lab report on flock flock y flock z insects and fruits

n200080 [17]

Answer:

In this lab, you will learn the anatomy of an insect, how to identify an insect to order, how to collect and curate insects,

Explanation:

7 0

2 years ago

PLEEASE HELP TIMED WILL GIVE BRAINLIEST TO CORRECT ANSWER NLY PLEASEEEE HELPPPP

Arturiano [62]

Answer:

1) 1.15 mol

2) M=0.45

3) 22.5 mL

4) 6.25 mL

Explanation:

550 mL= 0.55 L

M= mol solute/ L solution

mol solute= M * L solution

mol solute= (2.1 M * 0.55 L ) M=1.15 mol solute

155 mL = 0.155 L

80 g -> 1 mol NH4NO3

5.61 g -> x

x= (5.61 g * 1 mol NH4NO3)/80 g x= 0.07 mol NH4NO3

M=(0.07 mol NH4NO3)/0.155 L M=0.45

3) M1V1=M2V2

V1= M2V2/M1

V1= (0.500 M * 0.225 L)/5.00 M V1=0.0225 L =22.5 mL

4) M1V1=M2V2

V1= M2V2/M1

V1= (0.25 M * 0.45 L)/ 18.0 M

V1=6.25 x 10^-3 L = 6.25 mL

8 0

3 years ago

Read 2 more answers

Given the balanced equation below, calculate the moles of aluminum that are needed to react completely with 13.2 moles of FeO?

irina [24]

The number of moles of aluminium that are needed to react completely with 13.2 moles of FeO is 8.8 moles

calculation

2Al + 3FeO → 3aFe +Al2O3

by use of of mole ratio of Al: FeO from equation above = 2:3 the moles of Al is therefore

= 13.2 x 2/3=8.8 moles of Al

3 0

3 years ago

The compound sodium carbonate is a strong electrolyte. Write the reaction when solid sodium carbonate is put into water:

Ludmilka [50]

The compound sodium carbonate is a strong electrolyte because it completely dissociates when placed in water into its component ions. The equation of the reaction can be expressed as:

$Na_2CO_3_{(s)} ---> 2 Na^+_{(aq)} + CO_3^{(2+)}_{(aq)}$

The dissociation leads to the formation of sodium and carbonate ions with the latter held together by its internal covalent bond.

This is unlike weak electrolytes that do not dissociate completely in water or aqueous solutions. Only a small fraction of the solute exists as ions in the solution.

More on strong and weak electrolytes can be found here: brainly.com/question/3410548

7 0

3 years ago

Be sure to answer all parts.

MrRissso [65]

Answer: The molarity of each of the given solutions is:

(a) 1.38 M

(b) 0.94 M

(c) 1.182 M

Explanation:

Molarity is the number of moles of a substance present in liter of a solution.

And, moles is the mass of a substance divided by its molar mass.