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4 years ago

What is the relationship between the length of daylight and the sun's angle

1 answer:

5 0

The earths rotation tilts around 23.5 degrees on its pole axis, relative to the plane of earths solar system orbit around the sun. as earth orbits the sun, this creates a 47 degree solar altitude angle

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How does the number of the families relate to the charges of ions that they form?

yanalaym [24]

Explanation:

The total number of electrons in the outermost shell orbitals gives the valency or the combining power of the element concerned.

The number is the same as the number of electrons gained or lost or shared in interatomic bonding.

The number of electrons lost denotes the charges on ions that they form.

On the periodic table, a group or family have the same number of electrons in their outermost shell. The group number denotes the amounts of electrons in their outer shell.

Here is a possible list of valencies of elements from valence electrons;

Number of valence electrons Possible valencies

1 1

2 2

3 3, 1

4 4, 2

5 5, 3

6 6, 2

7 7 , 1

8 8,0

These valencies are the charges on the ions. The bold ones are the preferred ones.

Group 8 elements do not carry any charges .

learn more:

Valence shell of carbon brainly.com/question/5274289

#learnwithBrainly

8 0

4 years ago

In a paragraph, explain what the story of the Gadarene demoniac teaches us about our life in Christ.

GarryVolchara [31]

Answer:

Just like the previously possessed man told people about his new life in Christ, we, too, should share about our new life in Christ.

Explanation:

The story of the demonaic is about a possessed man whose unclean spirits were sent out by Jesus. The spirits were sent into the pigs of the people who raised them to sell for profit (some of which were the Jew's pigs,) and they ran off the cliff and drowned. The owners of these pigs knew that Jesus did it to save the man but still were mad and wanted nothing to do with Jesus. They told Him to leave even though He saved the possessed man who they had previously tried to help. The man wanted to travel with Jesus, but He told the healed man to depart from Him and go to the people and share his story and how Jesus helped Him, and he obeyed. Just like the previously possessed man told people about his new life in Christ, we, too, should share about our new life in Christ.

Hope this helps. Don't hate me if it's wrong but this is what I found.

6 0

2 years ago

What is the empirical formula of a compound with 35.94% aluminum and 64.06% sulfur?

Marat540 [252]

Given:

% Al = 35.94

% S = 64.06

To determine:

Empirical formula of a compound with the above composition

Explanation:

Atomic wt of Al = 27 g/mol

Atomic wt of S = 32 g/mol

Based on the given data, for 100 g of the compound: Mass of Al = 35.94 g and mass of S = 64.06 g

# moles of Al = 35.94/27 = 1.331

# moles of S = 64.06/32 = 2.002

Divide by the smallest # moles:

Al = 1.331/1.331 = 1

S = 2.002/1,331 = 1.5 ≅ 2

Empirical formula = AlS₂

6 0

3 years ago

Read 2 more answers

The prefix milli- means 103 10-2 10-3 102

lesantik [10]

Milli- (symbol m) is a unit prefix in the metric system denoting a factor of one thousandth (10−3). Proposed in 1793 and adopted in 1795, the prefix comes from the Latin mille, meaning "one thousand" (the Latin plural is milia).

3 0

3 years ago

Particle Mass

dimaraw [331]

Answer:

(i) Protons, Neutrons

(ii) Mass number = 15

(iii) Atomic number = 12

(iv) Neutrons present in the atom = 17

(v) Nuclear symbol for the silicon isotope with mass number, A = 29 is ²⁹₁₄Si

Explanation:

(i) An atom is composed of three fundamental sub-particles: electrons, protons and neutrons. Electrons are found in orbits or energy levels some distance away from The nucleus of the atom. The nucleus of an atom contains the protons and neutrons which accounts for the mass of the atom.

(ii) The mass number of an atom of an element is the sum of the protons and neutrons present jn the nucleus of the atom.

The mass number of an atom of oxygen with proton or atomic number 8 and neutron number 7 is 8 + 7 = 15

(iii) Atomic number of an atom of an element is equal to the number of protons in the atom of the element.

Mass number = proton number + neutron number

Proton number = mass number - proton number

Proton number = 25 - 13 = 12

(iv) In the atom of sulfur represented bymthe symbol, the number in superscript is the mass number A, and the number in subscript is the atomic number Z.

Mass number = proton number + neutron number

Neutron number = Mass number - proton number

Neutron number = 33 - 16 = 17

(v) The nuclear symbol for the silicon isotope with mass number, A = 29 is ²⁹₁₄Si

Where the number in superscript is the mass number A, and the number in subscript is the atomic number Z.

5 0

3 years ago