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AURORKA [14]
4 years ago
9

The winter solstice is the shortest day of the year in the northern hemisphere. Please select the best answer from the choices p

rovided T F
Chemistry
2 answers:
krek1111 [17]4 years ago
6 0
This statement is true. The winter solstice is the shortest day of the year.
Natalka [10]4 years ago
5 0

Answer: The given statement is true.

Explanation:

Winter solstice is day at the hemispheres where day light is for shortest period and night longs for longest period. It is December 20 on northern hemisphere and 20 June on southern hemisphere.

During this time sun is farthest from the earth's both hemispheres.

Hence, the given statement is true.

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List the ideas of dalton
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Atoms has never been seen,nor experimentally detected. Their existence remained hypothetical.
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3 years ago
A 25 g substance has a temperature increase of 17’c when it absorbs 340 J of heat. What is it’s specific heat?
Irina-Kira [14]

Answer:

25 x 17 x 340

Explanation:

5 0
3 years ago
What are the steps in naming and determining the formula of ionic compounds?
vredina [299]
If you have to write the chemical formula of a simple, binary ionic compound given the name of the compound, you follow a set of three steps. Let's go through them using magnesium chloride as an example. Write the symbols for the cation and the anion: Mg and Cl. Determine the charge on the cation and anion.
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3 years ago
Identify the true statement(s) about the valence bond theory. 1. The strength of a bond depends on the amount of overlap between
Verdich [7]

Answer:

The strength of a bond depends on the amount of overlap between the two orbitals of the bonding atoms

Orbitals bond in the directions in which they protrude or point to obtain maximum overlap

Explanation:

The valence bond theory was proposed by Linus Pauling. Compounds are firmed by overlap of atomic orbitals to attain a favourable overlap integral. The better the overlap integral (extent of overlap) the better or stringer the covalent bond.

Orbitals overlap in directions which ensure a maximum overlap of atomic orbitals in the covalent bond.

6 0
4 years ago
Read 2 more answers
The empirical formula of a compound is CH2O and its molecular weight is 90.09 g/mol. Determine the molecular formula.
Pachacha [2.7K]

Answer : The molecular formula of the compound will be, C_{3}H_{6}O_3

Explanation :

Empirical formula : It is the simplest form of the chemical formula which depicts the whole number of atoms of each element present in the compound.  

Molecular formula : it is the chemical formula which depicts the actual number of atoms of each element present in the compound.  

For determining the molecular formula, we need to determine the valency which is multiplied by each element to get the molecular formula.

The equation used to calculate the valency is :

n=\frac{\text{molecular mass}}{\text{empirical mass}}

As we are given that the empirical formula of a compound is CH_2O and the molar mass of compound is, 90.09 gram/mol.

The empirical mass of CH_2O = 1(12) + 2(1) + 1(16) = 30 g/eq

n=\frac{\text{molecular mass}}{\text{empirical mass}}

n=\frac{90.09}{30}=3

Molecular formula = (CH_2O)_n=(CH_2O)_3=C_{3}H_{6}O_3

Thus, the molecular formula of the compound will be, C_{3}H_{6}O_3

7 0
4 years ago
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