Answer:
Data supports significantly because we can use the testing(depending sample) before and after we use the same object to test the hypothesis.
Mg 10
fe 24
s 18
i 54
divide by smallest no.
mg1
fe 2.4/2
s 1.8/2
i 5.4/5
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Answer:
2
Explanation:
Devising a repellent would by far be the most successful scenerio. The synthetic compound N,N-diethyl-meta-toluamide (DEET) is a good example of this repellant.
Answer:
1.155 moles of potassium nitrate are required to make 550 mL of a 2.1M solution.
Explanation:
In a mixture, the chemical present in the greatest amount is called a solvent, while the other components are called solutes.
Molarity is a unit of concentration of a solution and indicates the amount of moles of solute that appear dissolved in each liter of the mixture. In other words, the Molarity (M) or Molar Concentration is the number of moles of solute that are dissolved in a given volume.
The Molarity of a solution is determined by the following expression:

Molarity is expressed in units (
).
In this case:
- Molarity= 2.1 M
- number of moles of solute= ?
- Volume= 550 mL= 0.550 L (being 1L=1000 mL)
Replacing:

Solving:
number of moles of solute= 2.1 M* 0.550 L
number of moles of solute= 1.155 moles
1.155 moles of potassium nitrate are required to make 550 mL of a 2.1M solution.
Answer:
A car traveling 25 KM/H
Explanation:
It has the largest mass and speed.