What other forms of radiation may come from the stars?

Answers

Answer 1

Answer: Other forms of radiation may come from the stars. These radiations include x-ray radiation, ultraviolet radiation, electromagnetic radiation, infrared radiation, alpha ray, beta ray & gamma ray, visible light radiation, radio frequencies radiation and magnet waves.

Related Questions

To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 4.4-L bulb, then filled it with the gas at 1.00 atm and 22.0 ∘C and weighed it again. The difference in mass was 5.1 g . Identify the gas.

Answers

Answer : The diatomic gas is nitrogen gas, N₂.

Explanation :

First we have to calculate the moles of gas.

Using ideal gas equation:

$PV=nRT$

where,

P = Pressure of gas = 1.00 atm

V = Volume of gas = 4.4 L

n = number of moles of gas = ?

R = Gas constant = $0.0821L.atm/mol.K$

T = Temperature of gas = $22.0^oC=273+22.0=295.0K$

Putting values in above equation, we get:

$1.00atm* 4.4L=n* (0.0821L.atm/mol.K)* 295.0K$

$n=0.1817mol$

Now we have to calculate the molar mass of gas.

$\text{Molar mass of gas}=\frac{\text{Given mass of gas}}{\text{Moles of gas}}$

$\text{Molar mass of gas}=(5.1g)/(0.1817mol)=28.07g/mol$

As we are given that the gas is diatomic X₂.

As, 2 atoms of gas X has mass = 28.07 g/mol

So, 1 atom of gas will have mass = $(28.07)/(2)=14.04g/mol$

From this we conclude that the nitrogen atom has mass of 14.04 g/mol.

Thus, the diatomic gas is nitrogen gas, N₂.

How many atoms of zinc are in 6.05 moles of zinc

Answers

As we know that one mole contains 6.022 × 10²³ particles. And the number of particles are related to moles as,

# of Particles = Moles × 6.022 × 10²³ particles

In case of Zinc atoms,

# of Atoms = Moles × 6.022 × 10²³ Atoms/mol

Putting value of moles.

# of Atoms = 6.05 mol × 6.022 × 10²³ Atoms/mol

# of Atoms = 3.64 × 10²⁴ Atoms

Consider the processes I) NaCl(s) −→ Na+(aq) + Cl−(aq) II) CaCO3(s) −→ CaO(s) + CO2(g) III) H2O(ℓ) −→ H2O(s) For which cases would entropy of the system increase as the given process proceeds left to right? 1. I, II, III 2. I, II 3. III only 4. I, III 5. II only 6. II, III 7. I only

Answers

Answer:

Option 2

In process I & II entropy of the system increases proceed from left to right.

Explanation:

Entropy is an extensive property of the system. It means it depends on the amount or quantity of the system

In case for process 1

since one mole sodium chloride dissolve in water and it dissociate into two ions i.e. Na⁺ and Cl⁻

For process 2

CaCO₃(s) → CaO(s) + CO₂(g)

Change in gaseous moles = (Product moles - reactant moles)

⇒ Δng = 1

Since Δng > 0 it means randomness increases of the system from left to right. So, ΔS > 0

Final answer:

Processes I (dissolving NaCl) and II (decomposition of CaCO3) show an increase in entropy, whereas process III (freezing water) shows a decrease. Therefore, the entropy of the system increases for processes I and II, not III.

Explanation:

The student has asked which processes have an increasing entropy as they proceed from left to right. Entropy is a measure of the disorder or randomness in a system, and changes in entropy can be predicted based on phases changes, the dispersion of matter, and the change in the number of particles in a system.

For the process of dissolving NaCl (s) into Na+(aq) and Cl-(aq), entropy increases due to the dispersion of the solid into ions, hence increasing the randomness of the system. Therefore, process I has an increasing entropy. In process II, we have CaCO3 (s) decomposing into CaO (s) and CO2 (g), leading to an increase in the number of gaseous molecules, which significantly increases entropy compared to the original solid state. Lastly, process III involves the transition of H2O (l) into H2O (s), which means that water is going from a more disordered liquid state to a more ordered solid state, decreasing the entropy of the system.

Considering these details, the entropy increases for processes I and II but decreases for process III. Therefore, the correct answer to the student's question is option 2, which indicates that entropy increases for processes I and II.

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A solution with a pH of 2.0 has a hydronium ion concentration ten times greater than a solution with a pH of(1) 1.0 (3) 3.0
(2) 0.20 (4) 20.

Answers

Answer:The correct answer is (3).

Explanation:

The pH of the solution is defined as negative logarithm of $H^+$ or hydronium ions ions in the solution.

$pH=-\log[H^+]$

$2=-\log[H^+]$

$[H^+]=0.01 M$

The pH with 10 times the concentration $H^+$ ions.

$[H^+]=10* [H^+]'$

$pH=-\log[H^+]'=-\log[(0.01)/(10)]=3$

Hence, the correct answer is (3).

The answer is (3) 3.0. The solution with a pH of 2.0 has greater concentration means the other solution has greater pH. pH=-lg[H+]. So we can get the pH of other solution is 3.

Which of the following is a TRUE statement?a.
A molecule always has three types of elements present

b.
Compounds always include the elements hydrogen and sodium

c.
Compounds include things we use in our everyday lives

d.
All elements prefer to hang out with other elements and form molecules

Answers

The true statement among the following options is c. As the substances which we use are compounds.

Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.

Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.

Compounds include things we use in our everyday lives.Compounds are substances composed of two or more different elements chemically combined in a fixed ratio by weight. They are everywhere in our daily life, from food to electronics. For example, table salt is a compound that we use to enhance the flavor of our food.

Thus, the correct option is C.

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It is going to be B is B is it

The gray balls represent _____ and have a neutral charge. protons neutrons electrons

Answers

Protons have a positive charge.Electrons have a negative charge.Neutrons have no (neutral) charge.

Answer: The correct answer is neutrons.

Explanation:

There are 3 subatomic particles that are present in an atom. They are: protons, electrons and neutrons.

Protons carry positive charge and are found inside the nucleus of an atom.

Electrons carry negative charge and are found around the nucleus in the orbits.

Neutrons does not carry any charge and are found inside the nucleus of an atom.

Hence, the correct answer is neutrons.

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