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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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If you are going skiing do you need high or low friction and why?
cricket20 [7]
Low friction between you/the ski vs the snow.

if you think about it its kinda like you and a slip and slide...water helps decrease friction so you slide (snow does the same for the skiing) but without it you just flop and don't go anywhere (very easily anyway). 
3 0
3 years ago
According to KMT, at constant pressure and temperature, the frequency and force of molecule-wall collisions are constant. So inc
Norma-Jean [14]

Answer:

Boyle´s Law

Explanation:

If we increase the volume of a gas, its pressure will decrease that is why in this question the pressure was decreased to  yield the decrease in the number of collisions.

This is Boyle´s law which states that the pressure of a gas is inversely proportional to the volume of its container.

It is expressed mathematically  as P₁V₁ = P₂V₂

where the subscripts refer to intial and final conditions.

3 0
3 years ago
#1. A salt crystal has a mass 0.14mg,How many NaCl formula units does it contain? Express your answer using two significant figu
andrew11 [14]
To get the number of formula units given 0.14 mg NaCl. We convert first the mass to moles by dividing by the molar mass, then multiplying by Avogadro's number. The final answer is 1.44 x 10^18 formula units. 
4 0
4 years ago
A high temperature reaction vessel is charged with 0.5860 mol of iron powder and 35.1 L of oxygen gas at standard temperature pr
melamori03 [73]

Answer: 25.1195 L

Explanation:

<u>Given:</u>

There are 0.5860 mol of Iron powder (Fe)

The volume of oxygen gas at STP is 31.5 L

The volume filled by a gas at STP is approximately 22.71 L

Therefore, the moles of oxygen gas at STP = Volume of oxygen gas at STP/ 22.71

= 35.1/22.71

= 1.5456 mol

The balanced chemical equation given for this reaction is:

4Fe(s) + 3O2 (g) ----> 2Fe2O3 (s)

Dividing the above equation by 2, yields:

2Fe(s) + 3/2O2(g) -------> Fe2O3 (s)

From the equation we see:

2 moles of Fe reacts with 3/2 mole of O2 to give one mole of Fe2O3

Thus, let x moles of O2 react with 0.5860 moles of Fe

0.5860/2=x/3/2

0.5860*3=4*x

x = 1.758/4

x =0.4395 mol

So the remaining moles of oxygen gas = 1.5456 - 0.4395

= 1.1061 mol

Therefore, the amount of oxygen gas, in litres, remaining is = 1.1061*22.71

= 25.1195 L

3 0
2 years ago
a habitat must include all of the following except a. food sources. b. favorable conditions for reproduction. c. more than one p
I am Lyosha [343]
A habitat must include all of the following except C. More than one population of a given species.
3 0
3 years ago
Read 2 more answers
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