Which of the following devices can measure only atmospheric pressure? A. Pressure gauge B. Barometer C. Tire gauge D. Mercury tube

Answers

Answer 1

Answer: B.) Barometer

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Related Questions

What is the purpose of the scale on a map?
Calcium oxide (CaO) forms when an atom of calcium loses two electrons, giving it a +2 charge and an atom of oxygen picks up two electrons, giving it a -2 charge. What is calcium oxide?. A.) An element B.) A covalently bonded compound C.)An ionically bonded compound.
An unstable nucleus loses the most mass if the nucleus emits(1) an alpha particle (3) a positron (2) a beta particle (4) a gamma ray
In 1803, the British chemist John Dalton proposed several atomic theories. Which one of his theories was later shown to be incorrect?I. Atoms are indivisible and indestructible particles. II. All atoms of the same element are exactly alike. III. Atoms of different elements are different. IV. Atoms combine in specific numerical ratios to form compounds. A. II only B. II & III only C. I & II only
Protons inside the nucleus of an atom are held together though they have the same charge because?

What do atoms form when they bond chemically?a. atom
b. mixture
c. solution
d. molecules

Answers

They form molecules which can be in solution form if diluted in water, but some do form solutions on exposure to the atmosphere i.e they are deliquescent like pellets of sodium hydroxide

Determine which elements or compounds are products in the follow reaction equation: calcium + chlorine → calcium chloride A. calcium, chlorine, and calcium chloride B. calcium C. calcium and chlorine D. calcium chloride Reset Selection

Answers

Answer: D. calcium chloride

Explanation:

In reaction equations, reactants are on the left side of the arrow and products are on the right side of the arrow. So, our reactants are the elements calcium and chlorine, and our product is the compound calcium chloride.

I hope this helps! :)

Final answer:

In the given chemical reaction equation, the product is calcium chloride as it is formed from the reaction of calcium and chlorine.

Explanation:

In a chemical reaction, substances that are formed as a result of the reaction are known as products. In the given chemical equation, calcium (Ca) reacts with chlorine (Cl2) to produce calcium chloride (CaCl2). Therefore, in this reaction equation, the product is calcium chloride. The reactants, substances that exist before the reaction, are calcium and chlorine. So, the correct answer to your question is D. calcium chloride.

Learn more about Chemical Reaction here:

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Which of the following elements has the greatest atomic radius?A. potassium (K)
B. arsenic (As)
C. bromine (Br)
D. calcium (Ca)

Answers

Answer:

A. Potassium (K)

Explanation:

The trend of atomic radius goes:

As group number increases, radius decreases

As period number increases, radius increases

Answer:

francium

Explanation:

Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.

How do organisms that are not autotrophs get they energy they need to sustain life

Answers

They eat autotrophs, or each other. That's how they get energy.
Hope that answered your question.

Which ion was formed by providing the second ionization energy to remove an electron? Ca2+ N3– Fe3+ S2–

Answers

Answer:

Ca²⁺

Explanation:

Ionization energy is defined as the minimum amount of energy required to knock out the electron from valence shell of an atom in its gaseous state. While, second Ionization energy is defined as the amount of energy required to knock out the second electron from an ion containing +1 charge in gaseous state.

Among given options Ca²⁺ is the correct choice because the calcium has lost two electrons i.e. first electron was removed by providing first ionization energy i.e.

Ca + 1st IE → Ca¹⁺ + 1 e⁻

and second electron is was removed by providing second ionization energy i.e.

Ca ¹⁺ + 2nd IE → Ca²⁺ + 1 e⁻

$\boxed{{\text{C}}{{\text{a}}^{{\text{2 + }}}}}$ is formed by providing the second ionization energy to remove an electron.

Further Explanation:

The energy that is needed to remove the most loosely bound valenceelectrons from the isolated neutral gaseous atom is known as the ionization energy. It is denoted by IE. The value of IE is related to the ease of removing the outermost valence electrons. If these electrons are removed so easily, small ionization energy is required and vice-versa. It is inversely proportional to the size of the atom.

Ionization energy is further represented as first ionization, second ionization and so on. When the first electron is removed from a neutral, isolated gaseous atom, the energy needed for the purpose is known as the first ionization energy, written as ${\text{I}}{{\text{E}}_{\text{1}}}$ . Similarly, when the second electron is removed from the positively charged species (cation), the ionization energy is called the second ionization energy $\left( {{\text{I}}{{\text{E}}_{\text{2}}}} \right)$ and so on.

The neutral atom corresponding to ${\text{C}}{{\text{a}}^(2 + )}$ is calcium. If second ionization energy is supplied to calcium atom, it results in the removal of two electrons and thus ${\text{C}}{{\text{a}}^(2 + )}$ is formed. So ${\text{C}}{{\text{a}}^(2 + )}$ can be formed by providing second ionization energy. to the neutral atom.

The neutral atom corresponding to ${{\text{N}}^(3 - )}$ is nitrogen. If second ionization energy is supplied to nitrogen, it results in the formation of ${{\text{N}}^(2 + )}$ , not ${{\text{N}}^(3 - )}$ . So ${{\text{N}}^(3 - )}$ cannot be formed by providing the second ionization energy to the neutral atom.

The neutral atom corresponding to ${\text{F}}{{\text{e}}^(3 + )}$ is iron. If second ionization energy is supplied to the iron atom, it results in the formation of ${\text{F}}{{\text{e}}^(2 + )}$ , not ${\text{F}}{{\text{e}}^(3 + )}$ . So ${\text{F}}{{\text{e}}^(3 + )}$ cannot be formed by providing the second ionization energy to the neutral atom.

The neutral atom corresponding to ${{\text{S}}^(2 - )}$ is sulfur. If second ionization energy is supplied to the sulfur atom, it results in the formation of ${{\text{S}}^(2 + )}$ , not ${{\text{S}}^(2 - )}$ . So ${{\text{S}}^(2 - )}$ cannot be formed by providing the second ionization energy to the neutral atom.

Therefore, the only ion that can be formed by supplying the second ionization energy is ${\text{C}}{{\text{a}}^(2 + )}$ .

Learn more:

1. Which is the oxidation-reduction reaction:

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2. What is the mass of 1 mole of viruses: brainly.com/question/8353774

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Periodic classification of elements

Keywords: second ionization energy, Ca2+, N3-, Fe3+, S2-, IE1, IE2, first electron, second electron, neutral atom., nitrogen, calcium, iron, sulfur.

Ammonia is a weak base because it produces ___ ions in solution

Answers

only a few ions (in comparison to others that totally break apart)

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