How does the hydrogen atom produce light

Answers

Answer 1

Answer: when energy is put into an atom, the electrons can use the energy to go to a higher energy state (n value) which is called an exited state. when the electron goes back down to where it started (called the ground state) it releases the energy it gained in the form of a photon which is why it produces light.
A common way to get hydrogen gas to produce light is by passing an electric current through the sample.

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Water is densest at 4°C. What is that temperature on the Kelvin scale?

Answers

Answer : The temperature on the kelvin scale is, 277.15 Kelvin

Explanation :

As we are given the temperature in degree Celsius. Now we have to need to convert the temperature from degree Celsius into kelvin.

Conversion used for the temperature from degree Celsius to Kelvin :

$K=^oC+273.15\n\nK=4^oC+273.15=277.15K$

Therefore, the temperature on the kelvin scale is, 277.15 Kelvin

4 + 273.15 = 277.15K

The element carbon (C) is most likely to form covalent bonds with the element beryllium (Be). krypton (Kr). selenium (Se). sodium (Na).

Answers

The element that is most likely to form covalent bonds with carbon (C) is

Selenium (Se)

Explanation

Covalent bond is formed when there is sharing of electrons among two or more non metals.

Both carbon and selenium are non metals therefore they react to form a covalent bond by sharing electron.

Despite krypton been a non metal it does not form a covalent bond with carbon since krypton is inert ( non reactive).

Beryllium (Be) and sodium (Na) are metals therefore they form ionic bond with carbon instead of covalent bond.

Answer: Option (c) is the correct answer.

Explanation:

Atomic number of carbon is 6 and its electronic configuration is 2, 4. So, in order to complete its octet, it requires 4 more electrons.

Therefore, carbon form covalent bonds, that is, it shares electrons with and electron deficient atom.

Krypton is a noble gas and has completely filled octet. So, it will neither give to share its electrons with carbon atom.

Whereas beryllium and sodium does not have enough valence electrons to share. Hence, they will not form bond with carbon atom.

On the other hand, selenium being a non-metal is electron deficient and therefore, in order to complete its octet it will share its electrons with carbon atom.

Thus, we can conclude that the element carbon (C) is most likely to form covalent bonds with the element selenium (Se).

How will an energy diagram look for an exothermic reaction?The reactants and products will be at the same potential energy.

The reactants are at a higher potential energy compared to the products.

The reactants are at a lower potential energy compared to the products.

There will not be an activation energy barrier.

Answers

Answer : The correct option is, The reactants are at a higher potential energy compared to the products.

Explanation :

Exothermic reaction means energy is released and the overall enthalpy change is negative.

In exothermic reaction, the reactants are at a higher potential energy compared to the products. In other words, we can say that the products are more stable than the reactants.

B.) The reactants are at a higher potential energy compared to the products.

My reason being is because the reactants tend to gather "hyper" energy which is also known as potential energy and this will occur as shown in the answer as an Exothermic Reaction.

I really hope that this helps you out a lot. Have a nice day :)

Which of the following is a molecular compound?F) NO2
G) Ca(NO3)2
H) H2SO4
J) NaOH

Answers

Answer: H

Explanation:

The answer is G my guy

CH₃OH(l) + CO(g) → CH₃CO₂H(aq) What mass in grams of CO would be required for the complete carbonylation of 14.35 grams of methanol to acetic acid?

Answers

CO has a molar mass of 44.01 g/mol, which means that 1 mole of CO weighs 44.01 grams.

We want to convert 14.35 grams of ethanol to acetic acid, so we need to know how many moles of ethanol there are. Let's first multiply the given mass of ethanol by its molar mass:

14.35 (g) x 32.06 (g/mol) = 45.85 mol

So, we have 45.85 moles of methanol. If methanol reacts with CO to produce acetic acid, we need to know how many moles of CO we need to use, based on the stoichiometry of the reaction. The reaction equation gives us a 2:1 ratio for CO and methanol:

2 CH₃OH(l) + CO(g) → CH₃CO₂H(aq)

So, for every mole of CH₃OH we react, we will need 0.5 mole of CO. Therefore, we need 23.92 moles of CO to convert all the methanol to acetic acid.

Using the mass of 1 mole of CO, we can convert moles of CO to grams:

23.92 (mol) x 44.01 (g/mol) = 1050.93 (g)

So, we need 1051 grams of CO to completely convert 14.35 grams of methanol to acetic acid.

Do x-rays travel slower than infrared

Answers

No, x-rays do not travel slower than infrared radiation or even the opposite. Both are travelling in vacuum therefore they travel at same speed. They differ in the frequency of the electromagnetic waves.

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