Answer: Cells contain chromosomes which are made up of genes. Genes are made up of tightly wound strands of DNA.
Explanation:
A DNA (Deoxyribonucleic acid ) is a double-helix structure which carries the genetic information. Gene is a segment of DNA that carries basic information/instruction for growth and development. It is a basic unit of heredity that passes from parents to offspring. Chromosomes contain genes. Chromosomes are found in cells.
Thus, a cell contains chromosomes which as genes. A gene is a segment of DNA.
We want to write the nuclear equation for the beta decay of Aluminium-25.
The equation is:
First, as you may know, in a beta decay the number of protons is increased by one. Aluminium has 13 of them, so after the decay, we will have 14 protons.
This means that the aluminium will transform into silicon, then the nuclear equation is just:
Where the:
Is an electron, which is the emitted particle in the beta decay.
If you want to learn more, you can read:
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Answer:
В. No, because the mass of the reactants is less than the mass of the products.
Explanation:
Chemical equation:
NaBr + Cl₂ → 2NaCl + Br₂
The given equation is not balanced because number of moles of sodium and bromine atoms are less on reactant side while more on the product side.
There are one mole of sodium and one mole of bromine atom on left side of equation while on right side there are 2 moles of bromine and 2 moles of sodium atom are present. The number of moles of chlorine atoms are balanced.
Balanced chemical equation:
2NaBr + Cl₂ → 2NaCl + Br₂
Now equation is balanced. Number of moles of sodium , chlorine and bromine atoms are equal on both side.
Do you have any options, or is this a write-in?
If it is a write in, the answer is most likely friction, or heat energy.
M.E, Show Species Reacting As Their M.A
A Net Ionic Equation Is One In Which Spectator Ions Are Removed.