If the pressure, volume, and temperature of a gas are known, which can most likely be found by using the ideal gas law
Answers
the ideal gas law equation is as follows
PV = nRT
where P - pressure
V - volume
n - number of moles
R - universal gas constant
T - temperature
so if the pressure, volume and temperature are already known
we are left with n and R
since R is the universal gas constant that has a known fixed value then R too is known
so we are left with 'n'
once we know temperature volume and pressure
we can find the number of moles of gas present using the ideal gas law equation
A.) the molar amount of gas
Hope it helps!
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The Haber process can be used to produce ammonia (NH3) from hydrogen gas (H2) and nitrogen gas (N2). The balanced equation for this process is shown below.3H2 + N2 mc025-1.jpg 2NH3 The molar mass of NH3 is 17.03 g/mol. The molar mass of H2 is 2.0158 g/mol. In a particular reaction, 0.575 g of NH3 forms. What is the mass, in grams, of H2 that must have reacted, to the correct number of significant figures? 0.1 0.102 0.10209 0.1021
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A geologist was looking at a newmineral they found. The mineralsample was gray, non-metallic, haddensity of 3.8 g/mL, and a volumeof 48.3 mLOf the observed properties listedbelow, which is considered to be anextensive property?A GrayB MetallicC DensityD Volume
Answers
Answer:
Explanation:
In chemistry, elements and compounds are distinct types of substances with fundamental differences:
**Elements:** Elements are the simplest and purest substances in chemistry, consisting of only one type of atom. Atoms are the building blocks of matter, and each element is defined by the number of protons in the nucleus of its atoms. Elements are listed on the periodic table, where each element is represented by a unique chemical symbol. They cannot be broken down into simpler substances by chemical reactions. For example, oxygen (O), carbon (C), and gold (Au) are all elements.
**Compounds:** Compounds, on the other hand, are substances formed when two or more different elements chemically combine in fixed ratios. These combinations involve chemical bonds, where atoms share electrons or transfer them to achieve stable electron configurations. Compounds have unique chemical formulas that represent the types and numbers of atoms in the compound. Unlike elements, compounds can be broken down into their constituent elements through chemical reactions. A classic example is water (H2O), which is a compound composed of two hydrogen atoms and one oxygen atom.
In summary, elements are pure substances composed of identical atoms, while compounds are substances formed by the chemical combination of two or more different elements in fixed ratios. Elements are found on the periodic table and cannot be broken down further by chemical means, whereas compounds can be decomposed into their constituent elements through chemical reactions.
Answer:
Explanation:
In chemistry, elements and compounds are distinct types of substances with fundamental differences:
**Elements:** Elements are the simplest and purest substances in chemistry, consisting of only one type of atom. Atoms are the building blocks of matter, and each element is defined by the number of protons in the nucleus of its atoms. Elements are listed on the periodic table, where each element is represented by a unique chemical symbol. They cannot be broken down into simpler substances by chemical reactions. For example, oxygen (O), carbon (C), and gold (Au) are all elements.
**Compounds:** Compounds, on the other hand, are substances formed when two or more different elements chemically combine in fixed ratios. These combinations involve chemical bonds, where atoms share electrons or transfer them to achieve stable electron configurations. Compounds have unique chemical formulas that represent the types and numbers of atoms in the compound. Unlike elements, compounds can be broken down into their constituent elements through chemical reactions. A classic example is water (H2O), which is a compound composed of two hydrogen atoms and one oxygen atom.
Answers
Answer: molecules
Explanation:
To calculate the moles, we use the equation:
For
Given mass= 165 g
Molar mass of = 44 g/mol
Putting values in above equation, we get:
According to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains avogadro's number of particles.
1 mole of contains =
molecules of
Thus 3.75 moles contains =
molecules of
Thus there will be molecules of
The molar mass of CO2 is 44 grams per mole.
165 grams / 44 grams per mole of CO2 = 3.75 moles CO2
Using Avogadro’s law where 1 mole of substance equals 6.023 x 10^23 molecules
3.75 moles CO2 (6.023 x 10^23 molecules /mole) = 2.26 x 10^24 molecules CO2
b. cacao
c. mangoes
d. coffee
Answers
Central American countries are important agricultural producers. Each year, the United States imports about five billion dollars’ worth of bananas.
NOT:
b. cacao
c. mangoes
d. coffee
correct answer is D COFFEE
correct answer is D COFFEE
correct answer is D COFFEE
Answers
To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, Much of the mass of an atom is concentrated in its nucleus. The nucleus contains protons and neutrons and the outer part of the atom contains electrons.
What is atom?
Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit. Electron has -1 charge while proton has +1 charge. Neutron is neutral.
Much of the mass of an atom is concentrated in its nucleus. The nucleus contains protons and neutrons and the outer part of the atom contains electrons.
Therefore, much of the mass of an atom is concentrated in its nucleus. The nucleus contains protons and neutrons and the outer part of the atom contains electrons.
To know more about atom, here:
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Answer: 1) The answer is: c) protons and neutrons.
2) The answer is: a) electrons.
Explanation:
Answers
Answers
The age of the universe is approximately 13.8 billion years old. The universe is constantly expanding. A universe with a low density of matter is older than a matter – dmominated one. To determine the density and composition of the universe, scientists rely on missions such as NASA’s Wilkinson Microwave Anisotropy Probe spacecraft. They measure the thermal radiation left from Big Bang.