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Softa [21]
3 years ago
10

A group of students conducted an experiment to determine the effect of heat on the germination(sprouting) of sunflower seeds. Wh

ich of the variables listed below is the least important to control in this experiment?
a
the temperature of which the seeds are heated
b
the length of time the seeds are heated
c
the type of soil used
d
the amount of moisture in the soil
Chemistry
1 answer:
pentagon [3]3 years ago
3 0

what grade is this because apparently i like to know what grade it is before i solve it

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How many ions are in 32.45 grams of silver carbonate
GuDViN [60]

Answer:

0.0036265350669622

Explanation:

Report if wrong

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4 0
2 years ago
Explain how you would expect the strength of
LekaFEV [45]

Answer:

  • <u><em>You should expect that the ionic bond in LiBr is stronger than the bond in KBr.</em></u>

<u><em /></u>

Explanation:

The<em> ionic bonds</em> are formed by the electrostatic attraction between the ions, cations and anions.

In KBr the cation is K⁺ and the anion is Br⁻.

In LiBr the cation is Li⁺ and the anion is Br⁻.

You must expect that the bond strength depends mainly on the charges present on each ion and the distance between them.

Nevertheless, the effect of the distance between the radius dominate the trendency of the bond strength, which makes that the ionic strength trend be related to the ionic radius trend.

Lithium is a smaller ion than Potassium (both are in the same group and Lithium is above Potassium).

Thus, you should expect that the Li ion is closer to the Br ion than what the K ion is to the Br ion and expect that the bond between a Li ion and the Br ion be stronger than the bond between the K ion and the Br ion.

6 0
3 years ago
Write two balanced equations
yanalaym [24]

Answer:

1. NaOH + H₂O → Na⁺ + OH⁻ + H₂O + heat

2. NaOH + HCl → NaCl + H₂O

Explanation:

1. The dissolving of NaOH in water is an exothermic reaction resulting a heat. It also causes the dissociation of NaOH to its ions (Na⁺ and OH⁻).

So, the balanced equation will be NaOH + H₂O → Na⁺ + OH⁻ + H₂O + heat.

2. The reaction between acid and base resulting salt and water. It is considered as a neutralization reaction.

The reaction between HCl and NaOH will give sodium chloride and water and the balanced equation will be NaOH + HCl → NaCl + H₂O.

7 0
3 years ago
What is the volume of the solution that would result by diluting 80.00 ml of 9.13×10−2 m naoh to a concentration of 1.60×10−2 m
aalyn [17]
The equation that we will use to solve this question is:
M1*V1 = M2*V2
where:
M1 is the initial concentration = 9.13*10^-2 M
V1 is the initial volume = 80 ml
M2 is the final concentration = 1.6*10^-2 M
V2 in the final volume that we need to find

Substitute with the values given in the equation to calculate the final volume as follows:
(9.13*10^-2*80) = (1.6*10^-2) * V2
V2 = 456.5 ml
7 0
3 years ago
Read 2 more answers
Which substance is the limiting reactant when 4.0 g of sulfur reacts with 6.0 g of oxygen and 8.0 g of sodium hydroxide accordin
Marysya12 [62]
C, NaOH(aq) is the answer
6 0
3 years ago
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