Describe a test to determine whether an object is charged or uncharged.
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When an electric kettle containing cold water is switched on, the water in it starts boiling after a few minutes. What is the source of the heat energy of the boiling water? (3 points)a. Mechanical energy from the power socket b. Newly created energy that increased the total energy c. Mechanical energy from the heating element in the kettle d. Already existing energy that was present in some other form
If Lake Ontario were as cold as a continental arctic air mass that flowed over it, the lake effect snow _____.A.would be very strong B.would be very weak C.would occur as normal
What are chemical properties of water?
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First, divide both sides by 4. / Your problem should look like:
Second, since 4 goes into 3 to get 12, simplify it by 3. / Your problem should look like:
Answer: x = -3
divide 4 on both sides 4x divided by 4 is x then u take 12 divided by 4 and it equals -3 so x= -3
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Answer:
Explanation:
Given that the volume of a piece of metal =
Mass of piece of metal= 500 g
Formula to calculate the density is given by :-
Then, the density of piece of metal is given by :-
[Rounded to the nearest two decimal places.]
Hence, its density of piece of metal=
True or false?
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Answer: The statement is false
Explanation:
Electrons occupy a region in atoms known as orbitals or subs hell. These orbitals include
I) S-orbital: it can occupy a maximum of two electrons
II) P-orbital: It occupies a maximum of six electrons
III) D-orbital: it occupies a maximum of ten electrons
F and G-orbitals as examples of other orbitals present.
A good illustration of the 6 electrons occupied by the P-subshell is seen in Sodium (Na) with atomic number of 11
Na = 1s2, 2S2 2p6, 3s1
Note: extra electrons are transferred to the next orbital
Explanation: the p sub-shell can hold a max of 6 and the d sub-shell can hold a max of 10
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The concentration of the hydrogen dissociated into the solution gives the pH. When the solution has a pH of 5.6 then, the concentration of H⁺ is 2.51 × 10⁻⁶.
What is pH?
The estimation of the acidic and alkalinity of the solution based on the amount of the dissociated hydrogen or the hydronium ions in the solution gives the pH.
It is measured with the help of the pH scale that indicates the range of the acids and bases along with neutral. The formula of the pH includes the negative logarithm of the hydrogen ion concentration. pH is calculated as,
pH = - log [H⁺]
Given,
pH = 5.6
Substituting values above the concentration are calculated as,
pH = - log [H⁺]
5.6 = -log [H⁺]
[H⁺] = 10⁻⁵°⁶ ≈ 0.0000025
= 2.51 × 10⁻⁶
Therefore, the hydrogen concentration in solution with pH 5.6 is equivalent to 2.51 × 10⁻⁶.
Learn more about pH here:
#SPJ2
Answer:
Hi there!
The answer to this question is 2.5118X10^-6
Explanation:
The formula to solve this is 10^-pH
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Answer:
See the answer below, please.
Explanation:
Organic compounds are those produced by living beings (molecules associated with living beings) and correspond to carbon compounds (the main difference with inorganic compounds). The latter are produced by natural processes or in the laboratory.
Example of organic products: alkanes (methane), alcohols (ethanol or ethyl alcohol)
Example of inorganic products: sodium hydroxide, sodium chloride