An atom of titanium has an atomic number of 22 and a mass number of 49. Calculate the number of protons and neutrons in this atom. If the atom of titanium is neutral, how many electrons are in the atom?
Answers
If the atom is neutral, then the number of protons equals the number of electrons. Therefore, there are 22 electrons in a neutral titanium atom.
Protons: 22
Neutrons: 27
Electrons: 22
Final answer:
An atom of titanium with atomic number 22 and mass number 49 contains 22 protons, 27 neutrons, and 22 electrons.
Explanation:
An atom of titanium has an atomic number of 22 and a mass number of 49. The atomic number represents the number of protons in an atom, so there are 22 protons in this titanium atom. The mass number of an atom is the sum of its protons and neutrons.
Since the atomic mass is 49, and the atomic number is 22, we can subtract the atomic number from the atomic mass to find the number of neutrons. In this case, there are 27 neutrons in the titanium atom. If the titanium atom is neutral, it means it has an equal number of protons and electrons. Since there are 22 protons, there are also 22 electrons in the atom.
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Which of the following is not an ultimate goal of science? A. Make predictions B. Produce unchanging, absolute answers C. Give explanations for natural events D. Understand patterns
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2. Producers do not rely on other organisms for food.
3. There are always more consumers than producers in food chains.
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Explanation:
Second answer is the correct one.
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Nuclear fission is commonly used in nuclear power plants to generate electricity. The advantage of nuclear fusion is that it has the potential to produce large amounts of energy with minimal waste and no greenhouse gas emissions.
The half-life of a nuclide is crucial for a number of purposes, such as determining the age of archaeological artifacts and determining whether or not the storage of radioactive waste is safe.
The process of breaking up an atomic nucleus into two or more smaller nuclei and releasing a lot of energy is known as nuclear fission. The fission process uses energy to heat water and make steam, which drives turbines that turn into electricity.
The utilization of atomic splitting in power plants enjoys the benefit of delivering a lot of energy with somewhat modest quantities of fuel, and it doesn't discharge ozone depleting substances.
The process of combining two atomic nuclei into a single, more massive nucleus with the release of a significant amount of energy is known as nuclear fusion. This natural process is being investigated as a potential source of energy on Earth and in other stars.
The time it takes for half of a given amount of a radioactive substance to decay is known as the half-life of a nuclide. Scientists can calculate how much of a substance will remain after a certain amount of time by knowing its half-life, allowing them to make educated decisions regarding its safe handling.
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In the case of sodium chloride (NaCl) and glucose, both substances are indeed soluble in water. However, the solubility of NaCl is generally greater than that of glucose due to differences in their chemical properties.
NaCl is an ionic compound, meaning it consists of positive sodium ions (Na+) and negative chloride ions (Cl-). When NaCl is added to water, the polar water molecules surround the ions and separate them from the crystal lattice. These water molecules form favorable interactions with the charged ions through ion-dipole attractions, resulting in the dissolution of NaCl in water. These strong ion-dipole forces contribute to the high solubility of NaCl in water.
On the other hand, glucose is a covalent compound composed of carbon, hydrogen, and oxygen atoms. It does not dissociate into ions when dissolved in water. Instead, glucose molecules interact with water through weaker intermolecular forces such as hydrogen bonding and dipole-dipole interactions. While these forces allow glucose to dissolve in water, they are relatively weaker than the ion-dipole interactions in NaCl-water solution. As a result, glucose has a lower solubility compared to NaCl in water.
Therefore, the differing chemical properties of sodium chloride and glucose contribute to the higher solubility of NaCl in water compared to glucose.
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m = e / c^2
Plug in your numbers in the appropriate units.
m=1.02 × 10^-5
Answer : The amount of mass in kilograms lost would be,
Solution : Given,
Energy of released in the reaction =
Speed of light = c =
Formula used :
where,
E = energy released
m = mass
c = speed of light
Now put all the given values in the above formula, we get the amount of mass would have been lost.
conversion :
Therefore, the amount of mass in kilograms lost would be,
b. Calculate the molarity of the aqueous alcohol solution.
c. If 5.0 mL of the solution (above) is diluted to a volume of 50.0 mL, what is the molarity (M) of the resulting dilute solution?
Answers
mass alcohol = 15.0mL (0.792 g/mL) = 11.9 grams alcohol
mass water = 75.0mL (1.00 g/mL) = 75.0 grams water
total mass = 11.9 + 75.0 = 86.9 grams solution
mass% of methanol = (11.9/86.9)*100% = 13.69%
B. Molarity = 4.125 M
Solution:
Molarity = mole solute/L solution
mole solute = 11.9/32.05 = 0.3713 moles
L solution = 15 + 75 = 90 mL/1000 = 0.09 L
M = 0.3713/0.09 = 4.125
C. Answer is 0.4125 M
Solution:
C1V1 = C2V2
4.125(5mL) = C2(50mL)
C2 = 0.4125 M