In a chemical equation, reactants are the starting substances, located on the left side, and products are the substances formed, located on the right side. The combustion of methane, for example, has methane and oxygen as reactants and carbon dioxide and water as the products.
Explanation:To understand a chemical reaction, you need to first identify the reactants and products. Reactants are the substances that exist before the chemical reaction takes place and are usually located on the left side of a chemical equation. On the opposite side of the equation, you find the products, which are the new substances formed as a result of the chemical reaction.
For example, in the combustion of methane, methane (CH4) and oxygen (O2) are the reactants, while carbon dioxide (CO2) and water (H2O) are the products:
CH4 + 2O2 → CO2 + 2H2O
The chemical equation is balanced by ensuring that the number of atoms for each element is the same on both sides of the equation. This often involves adding coefficients before the chemical formulas of the reactants and products.
If a poison expires, is it no longer poison, or is it more poisonous?
The elements on the right side of the stair steps of the periodic table are classified as
An atom nucleus contains 28 protons and the atom has a mass number of 60. how many neutrons does this atom contain? how many electrons? what is the identity of the atom?
The given atom contains 32 neutrons, 28 electrons, and is identified as Nickel (Ni) based on its 28 protons.
Explanation:An atom's mass number is the sum of its protons and neutrons. Given that this atom has 28 protons and a mass number of 60, we subtract the number of protons from the mass number to find the number of neutrons. Therefore, 60 mass number - 28 protons equals 32 neutrons. As the number of protons in a neutral atom equals the number of electrons, this atom has 28 electrons.
The identity of the atom is determined by the atomic number which is equal to the number of protons. In this case with 28 protons, this atom is Nickel (Ni), according to the periodic table.
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For the element barium, which wavelength of light is produced by the largest drop in energy for an electron? Which represents the smallest drop? Explain.
Jupiter has a gravity of 2.9, what would your weight be on Jupiter if you weighed 84 lbs on Earth?
A. what are isotopes?
b. how are the isotopes of a particular element alike?
c. how are they different?
Answer:
A.) An isotope is an atom that has the same number of protons (or the same atomic number) as other atoms of the same element do but that has a different number of neutrons (and thus a different atomic mass)
B.) They are alike because every element has its own isotopes, H has three isotopes protium, deuterium, tritium
C.) They are different from each other due to having the same number of protons but a different number of neutrons
Isotopes are variations of a single element with the same proton count but various neutron counts. As a result, their chemical properties are comparable, but they may have different physical characteristics, such as atomic mass and stability.
Explanation:
Isotopes are various versions of a single element that have varied numbers of neutrons but the same number of protons. Isotopes of the same element share the same number of protons and electrons, hence they essentially have the same chemical properties.
However, due to variations in their atomic weights, isotopes of a particular element might have different physical characteristics. Different stability levels are frequently the result of this variation in atomic mass.
Some isotopes may also be radioactive, which means they are unstable and release radiation as they decay over time.
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Taking into consideration Genesis 1:28, what is the value of methodical problem solving?
Which type of change occurs when electrons form a bond between two atoms?
a. atomic change
b. chemical change
c. physical change
d. phase change?
What is the potential energy of the products minus potential energy of the reactants?
When we write the reaction mg(oh)2(aq) ⇌ mg2+(aq) + 2oh-(aq) we are indicating that?
Number the elements sodium, magnesium, phosphorus, and chlorine in the predicted order ionization energies from the highest to the smallest.
PLEASE HELP FAST!!!
The order of ionization energies from the highest to smallest is as below
Chlorine -1 ( highest)
phosphorus -2
magnesium-3
sodium-4 (smallest)
Explanation
sodium, magnesium,phosphorus and chlorine are in period three in periodic table.What does the law of conservation of mass state about the chemical process?
The cube has a mass of 3,300 g. What is its density? g/cm3 What substance is it?
Answer:the Density is 0.22 and the Substance is Cork
Explanation:
Rontloc pestu (Scrambled word)
Answer:
control setup
Explanation:
I looked it up
how was the first periodic table of the elements organized?
Which equation represents an interaction of a weak base with water?
The interaction of a weak base with water is represented by the equation B(aq) + H₂O(l) ⇒ BH+(aq) + OH⁻(aq), where the weak base forms its conjugate acid and a small proportion of hydroxide ions. An example of this is the reaction of trimethylamine with water, which does not fully dissociate and reaches equilibrium mostly in the nonionized base form.
Explanation:The equation that represents the interaction of a weak base with water is B(aq) + H₂O(l) ⇒ BH+(aq) + OH⁻(aq). This equation shows that when a weak base (represented by B) reacts with water, it forms its conjugate acid (BH+) and hydroxide ions (OH⁻), though not to the extent that a strong base would. The reaction of water acting as an acid with the weak base forms these two products. A weak base will give only a small proportion of hydroxide ions compared to a strong base, which fully dissociates in water.
For example, a weak base such as trimethylamine ((CH3)3N), interacts with water as follows: (CH3)3N(aq) + H₂O(l) ⇒ (CH3)3NH+(aq) + OH⁻(aq). This reaction reaches an equilibrium where most of the base is in the nonionized form.
Overall, the strength of a base is determined by its tendency to form hydroxide ions when dissolved in water. The equilibrium constant for the ionization of a weak base, known as the base ionization constant (Kb), helps in quantitating this tendency. A base that has a Kb value closer to that of water is a weaker base, whereas one with a Kb value further from that of water is a stronger base.
john dalton said that all atoms are identical in size and mass. explain why this is incorrect.
Ammonia can also be synthesized by the reaction 3h2(g)+n2(g)→2nh3(g) what is the theoretical yield of ammonia, in kilograms, that we can synthesize from 5.22 kg of h2 and 31.5 kg of n2? express the mass in kilograms to three significant figures.
We are given the complete reaction:
3 H2(g) + N2(g) → 2 NH3(g)
First let us convert mass to moles.
moles H2 = 5.22 kg / (2 kg/kmol) = 2.61 kmol H2
moles N2 = 31.5 kg / (28 kg/kmol) = 1.125 kmol N2
Then we find for the limiting reactant. The limiting reactant is the one who has lower (moles/coefficient) ratio.
H2 = 2.61 / 3 = 0.87
N2 = 1.125 / 1 = 1.125
Hence the H2 is the limiting reactant so we should base the calculation of NH3 from it. We see that 2 moles of NH3 is produced for every 3 moles of H2, therefore:
moles NH3 = 2.61 kmol H2 * (2 kmol NH3 / 3 kmol H2) = 1.74 kmol
The molar mass of NH3 is 17 kg/kmol, therefore the mass NH3 is:
mass NH3 = 1.74 kmol * 17 kg/kmol
mass NH3 = 29.58 kg
Which phrase best describes an exothermic chemical reaction? a does not absorb any energy b forms products with higher bond energy than reactants c is in a state of equilibrium d releases more energy than it absorbs?
The n = 1 shell contains ________ p orbitals. all the other shells contain ________ p orbitals.
Answer:
Zero; Three
Explanation:
The quantum numbers are the set of four described unique values that describes each electron in the orbitals of the atom. The four quantum numbers are the principal, azimuthal, magnetic, and spin.
The principal quantum number (n) gives the energy levels of the electrons. The value of n is always n ≥ 1.
The azimuthal quantum number, also known as the orbital quantum number, describes the shape of the subshell. The values of this quantum number ranges from 0 ≤ ℓ ≤ n − 1.
For n = 1,
The value of: ℓ = n-1 = 1-1 = 0
∵ ℓ = 0 ⇒ s-orbital
Therefore, in n=1 shell, there is only one value of ℓ. So, there is only one s-orbital and zero p-orbital.
For n > 1,
The value of: l = n-1 > 0
Therefore, for n > 1 shell, there are more than one values of ℓ. So, n > 1 shells contains a set of three p-orbitals each.
Which of the following is true concerning atoms? A.Atoms are made of even smaller substances called subatomic particles B.The properties of atoms cannot be measured or observed
Answer:
A.Atoms are made of even smaller substances called subatomic particles
Explanation:
Atoms are made up of small subatomic particles such as protons, electrons and neutrons.
Protons and neutron are located in the center of the atom. Electrons orbit the center of the nucleus. Hence option A is incorrect.
Properties of an atom can be studied. The chemical property of an aton depends on its atomic number or the number of protons. Some atoms are inherently unstable and their radioactive properties are also studied. Hence option B is incorrect.
When writing the electron configuration for an element in the d block you have to remember to lower the energy level by 1.
Question 2 options:
True
False
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. when 18.0 g of carbon were burned in the presence of 62.3 g of oxygen, 14.3 g of oxygen remained unreacted. what mass of carbon dioxide was produced?
When the temperature of an object changes by 10 °C the same temperature change in Kelvins would be
calculate the energy of a photon of radiation with a wavelength of 6.4x10^-7 m.
The energy of a photon with a wavelength of 6.4x10^-7 m can be calculated using Planck's equation, E = hc/λ, giving a result of E = 3.11 x 10^-19 Joules.
Explanation:To calculate the energy of a photon of radiation with a wavelength of 6.4x10^-7 m, you use the equation derived from Planck's equation, specifically E = hc/λ, where E is the energy of the photon, h is Planck’s constant (6.626 × 10^-34 J-s), c is the speed of light (3.00 × 10^8 m/s), and λ is the wavelength. So plugging in the given wavelength, we get:
E = (6.626 × 10^-34 J-s)*(3.00 × 10^8 m/s) / 6.4x10^-7 m
Performing this calculation gives E = 3.11 x 10^-19 Joules. This is the energy of the photon.
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How do insects walk on water? hydrogen bonding, cohesion, surface tension?
What is the difference between alcoholic fermentation and lactic acid fermentation?
Answer:
Differences
Lactic acid fermentation involved a step from Pyruvate to Lactate in muscles and bacteria
Alcoholic fermentation involved a two way step- pyruvate → ethanal
and
Ethanal→ ethanol in yeast cells
End products
Lactic acid fermentation ; lactase is the end product
Alcoholic fermentation- C02 and Alcohol: Alcohol is give off
Enzymes
Lactate dehydrogenase and pyruvate decarboxylase are the two enzymes for catalysis of lactic acid fermentation reactions
The two enzymes of alcoholic fermentation are; Pyruvate decarboxylase and alcohol dehydrogenase,
Explanation:
In the formation of table salt, the product, NaCl, has less energy than the reactants, Na and Cl 2 . This reaction is ____________
exothermic
endothermic
Margarine is usually made by a process called ________, in which hydrogen atoms are added to unsaturated fatty acids found in vegetable oils.
Explain why metals are capable of conducting electricity while ionic solids are not.