Uranium atoms each have 92 protons. How many protons does each U-238 atom have?
2 answers:
<u>Answer:</u> The correct answer is Option A.
<u>Explanation:</u>
Atomic number is defined as the number of protons or electrons that are present in a neutral atom. It is represented by Z.
Atomic number = number of protons = number of electrons
Mass number is defined as the sum of number of protons and neutrons that are present in an atom. It is represented by A.
Mass number = Number of protons + Number of neutrons
We are given an isotopic representation of
Number of protons = 92
Mass number = 238
Number of neutrons = 238 - 92 = 146
For every uranium atom, number of protons will be 92
Hence, the correct answer is Option A.
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<h3>Answer:</h3>
4.70 × 10²⁴ atoms Ge
<h3>General Formulas and Concepts:</h3><u>Math</u>
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
- Left to Right
<u>Chemistry</u>
<u>Atomic Structure</u>
- Using Dimensional Analysis
- Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
<u>Step 1: Define</u>
7.80 mol Ge
<u>Step 2: Identify Conversions</u>
Avogadro's Number
<u>Step 3: Convert</u>
= 4.69716 × 10²⁴ atoms Ge
<u>Step 4: Check</u>
<em>We are given 3 sig figs. Follow sig fig rules and round.</em>
4.69716 × 10²⁴ atoms Ge ≈ 4.70 × 10²⁴ atoms Ge
Answer:
The Photosynthesis process
Explanation:
Plants, algae, and some other organisms can transform the sunlight energy into chemical energy. The photosynthesis process occur thanks to the chloroplasts. The chloroplast is an organelle found in all green plants. Inside of the chloroplast you can find the thylakoids which are arranged in stacks named grana, they have membranes with chloropyll a photosynthetic pigment, also you can find the photosystems, they are functional and structural units of protein complexes. The thylakoids capture the light and allow the reactions to transform CO2. The set of reactions that occurs in the chloroplasts are known as the Calvin cycle.
The general equation of photosynthesis is:
6 CO2 + 6 H2O + Energy -> C6H12O6 + 6 O2
Carbon Dioxide + water + Light -> Glucose (sugar) + Oxygen
After, this glucose is transformed into pyruvate, and it allowed the release of denosine triphosphate (ATP) by cellular respiration. The ATP is an organic chemical that is requires for the cell to perform any process (any kind or work).
Answer: 0.002 M
Explanation:
The balanced chemical equation for ionization of in water is:
According to stoichiometry :
1 mole of ionizes to give =2 mole of
ions
0.001 mole of ionizes to give =
mole of
ions
Thus of a solution of 0.001 M aqueous sulfuric acid is 0.002 M