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Illusion [34]
3 years ago
11

There are several different insecticides sold at your local home and garden store. They all claim to be safe for use around anim

als and children, but you want to be sure of this safety before you use one of the products at your own home. What would be the best way to be sure of the scientific reliability of these safety claims? Ask an employee of the store for her recommendation. Look up results of tests conducted by environmental agencies. Check for endorsements by celebrities of home-improvement shows. Use the sales records to determine which product is most popular.
Chemistry
2 answers:
Dovator [93]3 years ago
5 0
Look up results of tests conducted by environmental agencies is the most logical answer in my opinion.
deff fn [24]3 years ago
5 0

Answer:

The correct answer is "look up results of tests conducted by environmental agencies"

Explanation:

The only way to ascertain/disprove a claim is to conduct an experiment in the light of the claim but in this case, it will be very expensive to carry out experiments on all insecticides claiming to be safe for use around animals and children. The most reliable and cost effective thing to do is to <u>check out environmental agencies and see there results on tests they have independently carried out on these insecticides to make an informed conclusion</u>.

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6 0
3 years ago
Read 2 more answers
A sample of nitric acid contains both H3O ions and NO3 ions. This sample has a pH
bearhunter [10]

Answer : The name of positive ion present in this sample is, hydronium ion.

Explanation :

For formation of a neutral ionic compound, the charges on cation and anion must be balanced.

The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

Ion : An ion is formed when an atom looses or gains electron.

When an atom looses electrons, it will form a positive ion known as cation.

When an atom gains electrons, it will form a negative ion known as anion.

As per question, hydronium ion or hydrogen ion is having an oxidation state of +1 called as H_3O^{+} or H^+ cation and nitrate ion NO_3^{-} is an anion with oxidation state of -1.

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Hence, the name of positive ion present in this sample is, hydronium ion.

4 0
4 years ago
A 0.479 g sample of nitrogen, oxygen or neon gas occupies a volume of 265 ml at 157 kpa and 20◦c. what is the molar mass and ide
Anna11 [10]
PV = nRT
P = 157 kPa = 157 × 10³ Pa
V = 265 ml = 0.265 l
T = 20°C = 293 K
m = 0.479 g
PV•M = mRT
M = (mRT)/(PV)
M = 0.479 g × 8.314 kPa.l/(mol.K) × 293 K / (157 kPa × 0.265 l)
M ≈ 28.04579 g/mol.
Hence, the Molar Mass of Dinitrogen or Nitrogen Gas is 28 g.
7 0
3 years ago
How to do part (b)??
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it has less tightly bound electrons, is able to lose electron easily as compare to metal B at it has 4 unpaired electron in 3d sub-shell.

3 0
3 years ago
What causes the temperature to decrease with altitude in the troposphere?
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<span>the temperature decreases with height here just like it does in the troposphere.</span>
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4 years ago
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