Alexis predicts that the size of a magnet affects its magnetic properties. She designs anexperiment using magnets of different sizes and paperclips to test her prediction. She takes
three magnets of different sizes (one small, one medium, and one large) and holds them over
a container of paperclips to see how many are attracted. Her results are shown in the table
below.
What should Alexis do next after examining her experimental results?
Answers
Answer:
Alexis should conduct more trials to see if there is a correlation between magnet size and magnetic properties.
Explanation:
Related Questions
The production of water proceeds according to the following equation.2H2(g) + O2(g) → 2H2O(g) Which describes a way to speed up the collisions between hydrogen and oxygen molecules to produce more water? a. Use a less-intense source of heat on the reactants. b. Maintain the same temperature of the reactants. c. Place the reactants in a smaller container. d. Reduce the concentration of the reactants.
What is the mass of an aluminum cylinder that has a volume of 1.50m3
Why does vomit taste sour
Why did the identity of the water not change when it formed ice? assroo.
Answers
If it is known that solubility of NaCl is 360 g/L, let's find out how many NaCl is in 30 mL of water:
360 g : 1 L = x g : 30 mL
Since 1 L = 1,000 mL, then:
360 g : 1,000 mL = x g : 30 mL
Now, crossing the products:
x · 1,000 mL = 360 g · 30 mL
x · 1,000 mL = 10,800 g mL
x = 10,800 g ÷ 1,000
x = 10.8 g
So, from 30 mL mixture, 10.8 g of NaCl could be extracted.
Let's calculate the same for 10 mL water instead of 30 mL.
360 g : 1 L = x g : 10 mL
Since 1 L = 1,000 mL, then:
360 g : 1,000 mL = x g : 10 mL
Now, crossing the products:
x · 1,000 mL = 360 g · 10 mL
x · 1,000 mL = 3,600 g mL
x = 3,600 g ÷ 1,000
x = 3.6 g
So, from 10 mL mixture, 3.6 g of NaCl could be extracted.
Now, let's compare:
If from 30 mL mixture, 10.8 g of NaCl could be extracted and from 10 mL mixture, 3.6 g of NaCl could be extracted, the ratio is:
3.6/10.8 = 1/3
Therefore, it will be extracted only 1/3 of NaCl less in 10 mL of water than in 30 mL of water.
Answers
Atoms of different elements are different based on the number of protons they have in their nucleus. This number, known as the atomic number, is unique to each element and defines its identity.
The modern atomic theory states that atoms of one element are the same, while atoms of different elements are different. What makes atoms of different elements different? The fundamental characteristic that all atoms of the same element share is the number of protons.
All atoms of hydrogen have one and only one proton in the nucleus; all atoms of iron have 26 protons in the nucleus. This number of protons is so important to the identity of an atom that it is called the atomic number (Z).
The number of protons in an atom is the atomic number of the element. Thus, hydrogen has an atomic number of 1, while iron has an atomic number of 26. Each element has its own characteristic atomic number.
Answer:
the first one
Explanation:
Answers
The atomic mass of bromine is: A(Br) = 80
The molecule Br₂ consists of 2 Br atoms. Thus, the molecular mass of bromine is: Mr(Br₂) = 2*A(Br) = 2*80 = 160
This means there are 160 grams/l of Br₂ in 1 M.
Let's write a proportion. If 160 grams/l of Br₂ are present in 1 M, how much of Br₂ will be in 0.01 M:
160 g/l : 1 M = x : 0.01 M
After crossing the products:
x = 80 * 0.01 = 1.6 g/l
Let's write another proportion. If there are 1.6 g of Br₂ in 1 liter, how many of Br₂ will be present in 0.5 liter:
1.6 g : 1 l = x : 0.5
After crossing the products:
x = 1.6 * 0.5 = 0.8 g
Answers
Answer: The correct answer is Option b.
Explanation:
Water is the compound which is formed by the covalent bonding of hydrogen and oxygen atoms. The chemical formula for this compound is
Self-ionization of water is defined as the process in which 2 water molecules react together to produce hydroxide ion and hydronium ion.
The equation for the self ionization of water molecule follows:
By Stoichiometry of the reaction:
2 moles of water molecules react together to produce 1 mole of hydronium ion and 1 mole of hydroxide ion.
Hence, the correct answer is Option b.
Answers
One milliliter is equal to a thousandth of a liter, so divide by 1000..
Final answer:
To convert 22.0 mL to L, divide the given value by 1000.
Explanation:
To convert 22.0 mL to L, you need to use the conversion factor of 1 L = 1000 mL.
Therefore, to convert mL to L, divide the given value by 1000.
So, 22.0 mL = 22.0 mL / 1000 = 0.022 L.
Learn more about Unit Conversion here:
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Answers
mass number = 5 + 7
mass number = 12
= 5 + 7
= 12 u.
Thus, the answer is 12 u.