Which element is very toxic and reactive green gas?
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Water _____.dissolves in most substancesheats and cools very quicklyis always 100% pureis neither an acid nor a base
What are the two parts of an atom?the nucleus and the proton cloud the neutron and the electron cloud O the neutron and the proton cloud O the nucleus and the electron cloud
The Due Process Clause guarantees thata. the National Government will not interfere with constitutional rights. b. States are not bound by their State constitutions in matters of individual rights. c. States will not deny people any basic or essential liberties. d. State governments will police the National Government.
Which sample of water contains particles having the highest average kinetic energy ?
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Answer:
Answer in picture
Explanation:
Final answer:
To calculate the molar mass of a compound, sum the atomic masses of all atoms in the compound. Ammonia has a molar mass of 17.04 g/mol, magnesium hydroxide has a molar mass of 58.33 g/mol, and iron(III) oxide has a molar mass of 159.70 g/mol.
Explanation:
Calculating Molar Mass
To calculate the molar mass of a compound, you sum the atomic masses of each individual element present in the compound, multiplied by the number of each of those atoms in the formula.
Ammonia (NH3): The atomic mass of nitrogen (N) is approximately 14.01 g/mol and hydrogen (H) is approximately 1.01 g/mol. Since ammonia contains one nitrogen atom and three hydrogen atoms, its molar mass would be (14.01 g/mol) + 3 × (1.01 g/mol) = 17.04 g/mol.
Magnesium hydroxide (Mg(OH)2): The atomic mass of magnesium (Mg) is approximately 24.31 g/mol, oxygen (O) is approximately 16.00 g/mol, and hydrogen (H) is again 1.01 g/mol. Magnesium hydroxide has one magnesium atom, two oxygen atoms, and two hydrogen atoms. Thus, its molar mass is (24.31 g/mol) + 2 × (16.00 g/mol) + 2 × (1.01 g/mol) = 58.33 g/mol.
Iron(III) oxide (Fe2O3): The atomic mass of iron (Fe) is approximately 55.85 g/mol and oxygen (O) is 16.00 g/mol. Iron(III) oxide consists of two iron atoms and three oxygen atoms, giving a molar mass of 2 × (55.85 g/mol) + 3 × (16.00 g/mol) = 159.70 g/mol.
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Answer: The mole ratio of zinc to zinc sulfate is 1:1.
Explanation:
According to reaction,1 mole of zinc reacts with 1 mole of sulfuric acid to give 1 mole zinc sulfate and 1 mole of hydrogen gas .
So, the mole ratio of zinc to zinc sulfate is:
Hence, the mole ratio of zinc to zinc sulfate is 1:1.
20 grams/ (65 grams/mole)=0.31 moles of zinc
The molar ratio of Zn and H2 is 1 to 1, so 0.31 moles of H2 are also produced. The ratio is the same for the sulfuric acid. H2SO4=2*1+32+16*4=98 grams/mole
(98 grams/mole)*0.31 moles=30.4 grams of H2SO4.
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Propyne has one triple bond between the two carbons HC≡C-CH₃ while heptene has one double bond between two carbons in the chain of the seven carbon atoms.
What are the steps for the IUPAC nomenclature?
The 1st step for the IUPAC name is to select the longest, most substituted carbon chain with a functional substituent chosen. Then the use of the primary suffix indicates the degree of saturation in the structure such as 'ane' or 'ene.
The 'ane' suffix is used for a singlebond while 'ene' suffix is used for a doublebond and 'yne' is used for triple bonds.
Then the identification of the secondary suffix indicates the functional substituent in the molecule which depends on the number of times the same functional substituent is repeated such as di, tri, tetra, etc.
In the structure of heptene, the double bond can be present between any two adjacent carbons. If the double bond is present at the third and 4th carbon then it can be named 3-heptene.
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A...thermal energy to chemical energy
B....electromagnetic energy to chemical energy
C....kinetic energy to potential energy
D...potential energy to chemical energy
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I hope this helps. Let me know if anything is unclear.
During photosynthesis, sunlight shining on a plant is absorbed. The energy transformation occurs during this process is thermal energy to chemical energy.
What is photosynthesis?
Photosynthesis is a process by which the plants make their food. The process takes sunlight, water, and chlorophyll into food.
Thus, the correct option is A.thermal energy to chemical energy.
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The vapor pressure of a compound refers to the pressure generated by the vapour of a compound in equilibrium with its condensed stage. The major determinant of a compound vapour pressure is temperature. The vapour pressure of an aqueous solution of sodium chloride will be lower than that of pure water. This is because, dissolution of solute in a solvent always reduces the vapour pressure of the solution as a result of interactions between the molecule of the solute and the solvent. Thus, a pure compound will always have a higher vapour pressure than a solution.
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Answer:
maybe i can help for you where the question