Arcturus Is A Star Whose Surface Temperature Is 4290 K. What Is Most Likely The Color Of Arcturus? What (2024)

Answer:

The pH of an aqueous solution is the measure of how acidic or basic it is. The pH of an aqueous solution can be determined and calculated by using the concentration of hydronium ion concentration in the solution.

Explanation:

Answer:

D

Explanation:

It is Sulfuric Acid

H₂SO₄ (aq) Sulphuric Acid is the acid in the reaction.

What is an Acid ?

A substance that can donate a proton or accept an electron pair to form a bond is called an Acid

An acid turns Litmus paper red and has pH < 7 , It has the property of neutralizing alkali.

It has sour taste and can dissolve metals.

The reaction mentioned in the question is :

H₂SO₄ (aq) + Mg (s) ⇒ MgS0₄ (aq) + H₂ (g)

Here Sulphuric Acid is donating a proton i.e. H⁺ so is the acid in the reaction.

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Answer: The balanced chemical equation is [tex]2NaNO_{3}(s) + Heat \rightarrow 2NaNO_{2}(s) + O_{2}(g)[/tex] and it is a decomposition chemical reaction.

Explanation:

A chemical reaction in which single compound is decomposed into two or more species is called a decomposition reaction.

For example, [tex]NaNO_{3}(s) + Heat \rightarrow NaNO_{2}(s) + O_{2}(g)[/tex]

As the compound [tex]NaNO_{3}[/tex] is decomposing to given two different substances. So, it is a decomposition reaction.

Here, the number of atoms on reactant side are as follows.

Na = 1N = 1O = 3

The number of atoms on product side are as follows.

Na = 1N = 1O = 4

To balance this equation, multiply [tex]NaNO_{3}[/tex] by 2 on reactant side and multiply [tex]NaNO_{2}[/tex] by 2 on product side. Therefore, the equation will be rewritten as follows.

[tex]2NaNO_{3}(s) + Heat \rightarrow 2NaNO_{2}(s) + O_{2}(g)[/tex]

Here, number of atoms on reactant side are as follows.

Na = 2N = 2O = 6

The number of atoms on product side are as follows.

Na = 2N = 2O = 6

Hence, this equation is balanced.

Thus, we can conclude that the balanced chemical equation is [tex]2NaNO_{3}(s) + Heat \rightarrow 2NaNO_{2}(s) + O_{2}(g)[/tex] and it is a decomposition chemical reaction.

Answer:

107.9

Explanation:

If we view a new moon tonight, 4 weeks will pass before we view a full moon. The sole natural satellite of Earth is the Moon.

What is moon?

The sole natural satellite of Earth is the Moon. With a diameter that is around one-fourth that of the Earth, it's the fifth biggest satellite inside the solar system as well as the largest and also most massive when compared to its parent planet. The Moon is larger than any other dwarf planets of a Solar System and belongs to a planetary-mass body with a distinct rocky body, rendering this a satellite planet according to geophysical interpretations of the term.

There isn't much of an atmosphere, hydrosphere, and magnetic field there. With a surface gravity of 0.1654 g, it has a gravity that is around one-sixth that of Earth. Jupiter's moon Io is the only satellite inside the Solar System that is documented to have a higher gravity and density. If we view a new moon tonight, 4 weeks will pass before we view a full moon.

Therefore, if we view a new moon tonight, 4 weeks will pass before we view a full moon.

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Answer:

4Hg+2O2=4HgO

four Mercury + four oxygen

Answer: i dont understand

Explanation:

Question

What is the name of this ben zene ?

the name of this benzene is benzene circle

if you also don't understand the go in this link

https://en.m.wikipedia.org/wiki/File:Benzene_circle.svg

plz give me brainliest+ thanks i need it to reach in expert : )

Answer:

The negative charge (fewer protons than electrons) for an anion is shown by a number and minus sign after the formula. If there's just a minus sign, it means the charge is minus 1. Here are several examples of anions: If an ion consists of two or more atoms it is called a polyatomic ion.

Explanation:

Answer: I think it’s A, positive charge

Explanation:

Answer:

the flavour or the taste or the packaging

Answer:

3.5

Explanation:

Answer:

1.15.........................

Answer: a unicellular organism & plant or animal

Explanation: a organism is any unicellular plant, animal or single celled life form.

Answer: In a vacuum, the objects fall at the same rate independent of their respective masses. That means coin and feather both reach ground at same time in a vacuum. Larger objects experience more air resistance than smaller objects. Also, the faster an object falls, the more air resistance it encounters.

Explanation:

Answer:

2AL + 3CUO = AL2O3 + 3CU

hope it helps

Answer: 8, which is basic

Explanation: The hydrogen ion concentration is 1.0 x 10^-8 mole per liter. Using [H+] = 1.0 x 10 -(pH) the pH is 8. A pH above 7 is basic.

An aqueous solution that has a hydrogen ion concentration of 1.0 x 10-⁸ mole per liter has a pH of 8, which is basic.

What is pH?

pH of a solution refers to the degree of acidity or alkalinity of the solution.

The pH of a solution can be calculated using the following formula:

pH = - log [H+]

According to this question, an aqueous solution that has a hydrogen ion concentration of 1.0 x 10-⁸ mole per liter.

pH = - log [1 × 10-⁸]

pH = 8

Therefore, an aqueous solution that has a hydrogen ion concentration of 1.0 x 10-⁸ mole per liter has a pH of 8, which is basic.

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Answer:

B.

Explanation:

Answer:

Ocean acidification

Explanation:

Ocean acidification is the progressive decrease in the pH of the oceans on Earth as the increasing amount of carbon dioxide CO₂ in the atmosphere which is due mainly to fossil fuel combustion, is dissolved into the oceans

Carbonic acid is formed when carbon dioxide, CO₂, in the atmosphere is dissolved in the ocean water to form carbonic acid as follows;

CO₂ + H₂O → H₂CO₃

H⁺(aq) ⇄ HCO₃⁻ (aq)

According to L e C h a t e l i e r ' s an increase in the amount of carbon dioxide in the atmosphere will result in more CO₂ dissolving into the oceans and forming more carbonic acid, HCO₃⁻ (aq), thereby increasing the acidity of the oceans which is equivalent to a reduction in the pH of the ocean waters.

Answer:

Option D. Saturated alkane

Explanation:

To know which option is correct, it is important that we know what saturated and unsaturated compounds are in this context.

Saturated hydrocarbons are compounds which has only carbon to carbon single bonds (C–C) in its chain. A very good example of such compound is the Alkanes.

Unsaturated hydrocarbons are compounds which has either a carbon to carbon double bond (C=C) or a carbon to carbon triple bond (C≡C) in its chain. Examples of such compounds include alkenes and alkynes.

Now, let us answer the question given above bearing the meaning of saturated and unsaturated compounds in mind.

The compound given above contains only carbon to carbon (C–C) single bond.

Therefore, the compound is a saturated alkane.

Answer:

True

Explanation:

Mark as brainliest

Answer:

true

Explanation:

Answer:

D

Explanation:

Because the Earth rotates through two tidal “bulges” every lunar day, coastal areas experience two high and two low tides every 24 hours and 50 minutes!!!

Answer:

Line form is influenced by how fast we are writing and the pressure and also what writing instrument is used

Answer:

Who's number is it LOL

Explanation:

Answer:

okay

Explanation:

Answer:

The correct answer is - they can create genetic diversity as well and reproduce without mate when necessary.

Explanation:

Sexual reproduction provides an organism with genetic diversity and variation by the process and it required two mates and a longer time to pollination and fertilization and is used in normal conditions.

In case of a threat, such organisms use asexual reproduction to increase their number as in asexual reproduction no need of mate, an organism can grow and increase on its own it provides to not to exitinct.

Answer:

Se gasta menos dinero cocinando la comida en una estufa de propano.

Explicación:

Nos cuesta menos dinero preparar una comida en una estufa de propano en comparación con la estufa de butano porque el propano produce más calor en comparación con el butano. El propano produce más calor que el butano y es más eficiente en la combustión, por eso se necesita menos cantidad de propano para alcanzar la temperatura para cocinar los alimentos en comparación con el butano, que necesita más cantidad de combustible para cocinar los alimentos debido a una combustión ineficiente.

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In talc preparation, it is used during the filtration process and also acts as a distribution agent. When it is added to the dill water, it combines with all other compounds present in the substance and leaves the water alone. In this way, it acts as a filtering agent.

Answer:

The answer is d

Explanation:

Answer:

a

Explanation:

Answer:

CIF3

Explanation:

Edge completion

Answer:

b

Explanation:

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