Within a particular compound, an atom gives up two electrons. This atom is A. part of a covalent compound.
B. positively charged.
C. negatively charged.
D. not part of an electrolyte.
Answers
Answer:
The correct answer is option B. positively charged.
Explanation:
A positively charged ion is an atom that readily loses its one or more electrons in a compound. Positively charged ion generally has same number of electrons and protons which means they are neutral charge atom. These atoms are generally attracted to negatively charged ion that lack electron in outer shell.
Thus, the correct answer is option. B. positively charged.
It cant be A. because a covalent bond only shares and doesn't give up electrons. Our answer must be an ion.
Its not negatively charged because it didn't gain any.
So our answer is B. positively charged
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The part of a cell that gives the cell unique characteristics is theA) nucleus. B) vacuole. C) cytoplasm. D) membrane.
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2-
B
1+
C
2+
D
1-
Answers
Answer:
B.) 1+
Explanation:
To obtain a full outer electron shell, sodium must lose one electron, leaving it with a plus one charge.
chemical symbols.
c.
numbers in front of molecules.
b.
subscripts after atoms.
d.
reactants in the product.
Answers
Answer: Option (c) is the correct answer.
Explanation:
A chemical equation will be balanced when there are equal number of both reactants and products.
For example, is an unbalanced chemical equation.
As there are two molecules of Cl on reactant side and there is only one molecule of Cl present on product side.
Therefore, to balance this chemical equation we will place the numbers in front of molecules as follows.
Thus, we can conclude that a chemical equation is balanced by changing or adding numbers in front of molecules.
A chemical equation is balanced by changing or adding numbers in front of molecules. The correct answer is option c.
A chemical equation is a symbolic representation of a chemical reaction in which the reactant molecules are on the left side and the product molecules are on the right side, with an arrow separating them to indicate the direction of the reaction.
- Numbers in front of molecules are called coefficients, and they represent the number of molecules of each substance involved in the reaction. By changing the coefficients, you can balance the number of atoms on both sides of the equation.
Therefore, the correct answer is option c. numbers in front of molecules.
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Answers
Answer:In a physical change, atoms are not rearranged and the matter's physical and chemical properties are unchanged. Chemical changes, on the other hand, rearrange the atoms of matter in new combinations, resulting in matter with new physical and chemical properties.
Explanation:
easy
Answers
Answer:
Ethyleneoxideisthechemicalagentsusedforsterilization.
Final answer:
Ethylene oxide is the chemical agent used for sterilization amongst those listed in the question. This gas sterilizes by disrupting the DNA of microorganisms. Other agents listed, such as chlorine, alcohol and phenolics are generally considered disinfectants, not sterilants.
Explanation:
Out of the chemical agents listed, ethylene oxide is the one commonly used for sterilization. Ethylene oxide is a gas that sterilizes by penetrating and disrupting the DNA of microorganisms, preventing them from reproducing. It is frequently used to sterilize medical and laboratory equipment, particularly items that cannot be sterilized by high heat such as plastic, electrical equipment, and delicate instruments.
While chlorine, alcohol, and phenolics can kill many microorganisms, they are generally considered disinfectants rather than sterilants because they may not kill all types of bacteria, viruses, fungi, and spores. Soap is typically used for cleaning, not specifically for its antimicrobial properties.
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Answers
5.0 mL ------------- 100 mL ( solution )
40 mL --------------- ? ( solution )
V = 40 . 100 / 5.0
V = 4000 / 5.0
V = 800 mL
hope this helps!
Answers
Answer:
Different ions of different elements (usually metals) make a flame burn with a characteristic color when introduced into the reaction zone; the different colors are caused by the different quantized energy levels of the electrons in the different atoms.