The universe cooled after the Big Bang. At some point, hydrogen atoms combined to form helium. What is this process called?

Answers

Answer 1

Answer:

When hydrogen atoms combined to form helium, this process is known as nuclear fusion.

What is nuclear fusion?

Nuclear fusion can be described as when two or more nuclei fuse to produce a single heavier nucleus. In this reaction, the matter is not conserved due to some of the mass of the nuclei is converted to energy.

For nuclear fusion, the nuclei should be brought together reaction to occur. Each star in the universe, including the sun, is shine due to nuclear fusion. They form huge amounts of energy through this process.

In the core of the Sun, hydrogen nuclei are being transformed into helium. This is known as nuclear fusion. It occurs when four hydrogen atoms fuse into each helium atom. During this process, some of the mass of hydrogen nuclei is converted into energy.

Nuclear fusion where hydrogenatoms combined to form helium can be represented as:

$4^1_1H\; \longrightarrow ^4_2He \; + 2\;^0_(+1)e \; + \;energy$

Learn more about nuclear fusion, here:

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Answer 2

Answer: In the basic Hydrogen fusion cycle, four Hydrogen nuclei (protons) come together to make a Helium nucleus. This is the simple version of the story. There are actually electrons, neutrinos and photons involved that make the fusion of Hydrogen into Helium possible.

Related Questions

An element's atomic number is 63. How many protons would an atom of this element have?
What element is this? How do you know?
One phosphorus, three chlorine, one oxygen
Measuring Physical Properties Lab ReportInstructions: In the Physical Properties lab, you will test the physical properties of different building materials in order to pick the appropriate materials for a new home in Tiny World. Record your observations and test measurements in the lab report below in the areas shaded in purple. You will submit your completed report to your instructor. Student Name Instructor Date Lab Objectives In this lab you will: • help the aliens, called Tinyians, build the best house on their planet called Tiny World. • experiment with different building materials to collect data to see which ones best meet the criteria for building a home on Tiny World. • test each building material for density, thermal and electrical conductivity, flexibility, and magnetism. Background Research: You will need to gather background research from the virtual lab to form a good hypothesis. Read the Welcome to Tiny World part of the lab. Use the background information you learn to answer the questions below. Describe the gravity of Tiny World. Part 1: Describe the reason your house will need magnets. Describe the climate of Tiny World. Hypothesis: In this section, include the IF/THEN statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment. A If we use _______ to build the roof of the house, then the temperature inside the house will remain cooler. B If we use_______ to build the walls and floors of the house, then the temperature inside the house will remain cooler. C If we use ______ to bring electricity into the home, then it will allow electricity to flow into the home at a faster rate. D If we use_______ to construct the latches on the windows and doors, then the magnetism will keep the latches secure. Part 2 Procedure: 1. You will test each building material for density, thermal and electrical conductivity, flexibility, and magnetism. 2. Record your observations in the data table provided below. 3. Repeat steps with all test materials. Data: Record the results of each of your physical property tests in the table below. Wood Clay Brick Iron Aluminum Copper Nickel Flexibility (?/10) Magnetism (number of paper clips) Thermal Conductivity (W/(m·K)) Electrical Conductivity (x107 S/m) Mass (g) 10g 10g 10g 10g 10g 10g Volume (cm3) Formula: L x W x H Density (g/cm3) Formula: D=M/V part 3 Conclusion Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words. 1 Using two to three sentences, summarize what you investigated and observed in this lab. 2 What was the independent variable in the lab? 3 What was the dependent variable in the lab? 4 Did each of your experiment results support, or fail to support your four hypotheses? A. B C. D. 5 Why do you think a building material's density is important when building homes or architectural structures? 6 Why wouldn’t you choose wood or aluminum for the latches on your house? 7 Which material has the highest thermal conductivity? 8 Which material has the highest electrical conductivity 9 Based on your data, explain why these materials have the highest thermal and electrical conductivity? 10 Think about where you live now or where you have lived in the past; use complete sentences to describe this environment and the weather.
CaSO3 (s) → → → → CaO (s) + SO2 (g) What mass of CaSO3 must have been present initially to produce 14.5 L of SO2 gas at a temperature of 12.5°C and a pressure of 1.10 atm?

What is a chemical property?

Answers

chemical properties include reactivity with other elements of substances, toxicity, flammability, and chemical stability
just to name a few

H2(g) + CO2(g) + 10 kcal H2O(g) + CO(g)In another experiment involving the above reaction at 1,000°C, the equilibrium concentrations were found to be:

H2(g) = 2.0 moles per liter
H2O(g) = 4.0 moles per liter
CO2(g) = 5.0 moles per liter
CO(g) = 4.0 moles per liter

What is the equilibrium constant, Keq, for this reaction?

Answers

Answer: The equilibrium constant for the given reaction is 0.8

Explanation:

Equilibrium constant is defined as the ratio of concentration of the products raised to the power its stoichiometric coefficients to the concentration of reactants raised to power its stoichiometric coefficient. It is represented as $K_c$

For the general equation:

$aA+bB\rightleftharpoons cC+dD$

The equilibrium constant is represented as:

$K_c=([C]^c[D]^d)/([A]^a[B]^b)$

For the given chemical equation:

$H_2(g)+CO_2(g)+10 kcal\rightleftharpoons H_2O(g)+CO(g)$

$K_c$ for this equation is given by:

$K_c=([H_2O][CO])/([H_2][CO_2])$

Concentration at equilibrium of

$H_2=2mol/L\nH_2O=4mol/L\nCO_2=5mol/L\nCO=4mol/L$

Putting values in above equation, we get:

$K_c=(4* 4)/(2* 5)\nK_c=0.8$

Hence, the equilibrium constant for the given chemical reaction is 0.8

This might be a little hard for me but I got it. So you have 2.0, 4.0, 5.0 and 4.0. Subtract from 3.0 - 2.0 = 1.0 and 4.5 - 2.0 = 2.5.

So now we have other answers.

H20, H2, CO2 and CO

Keq reaction for each formula is 1.6

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Which factors are needed for organisms to live earth

Answers

Answer: sunlight, water, air, habitat, and food.

Explanation: we are all living organisms and we all have our five basic necessities for survival; sunlight, water, air, habitat, and food.

As carbon dioxide sublimes, its entropy
(1) decreases (2) increases (3) remains the same

Answers

Answer: (2) increases

Explanation: Entropy is the measure of randomness or disorder of a system. More is the random arrangement of molecules in a system , more is the entropy of the system. More ordered is the arrangement of molecules in a system, less is the entropy of the system.

When carbon dioxide sublimes, it means solid carbon dioxide is directly changing to gaseous state without undergoing into liquid state, thus the molecules will be more random and thus the entropy will increase.

When something sublimes (Goes straight from solid to gas), it takes in energy, as it is an endothermic process, so its entropy increases

Identify the number of neutrons in one atom of sulfur with an isotopic mass number of 34 Amu

Answers

Mass number = number of neutrons + number of protons

In a periodic table, or other tables, you find that the atomic number of sulfur is 16. That means it has 16 protons.

Then the number of neutrons = 34 - 16 = 18.

a habitat must include all of the following except a. food sources. b. favorable conditions for reproduction. c. more than one population of a given species. d. adequate shelter and/or protection.

Answers

Answer: c. More than one population of a given species.

Explanation:

A habitat is a place or location which provide shelter and other necessary resources desired for survival.

Among the options given more than one population of a given species is correct option. This is because of the fact that if more than one population of species exists there will be competition for resources among the members this will lead to the decline in number of individuals in the populations.

A habitat must include all of the following except C. More than one population of a given species.

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