Biology, 24.05.2020 04:02 josegalvan123jg69

TRUE OR FALSE

1. The hydrogen ion and the hydronium ion can be used interchangeably in a chemical equation to represent a hydrogen ion in aqueous solutions.

2. The Bronsted-Lowry model says that an acid is a hydrogen-ion acceptor.

3. The pH scale go from 1 to 15

4. An acidic solution contains more hydrogen ions than hydroxide ions.

5. NaOH is a base

6. Acids and bases are good conductors.

7. Lemon soda has a low pH, therefore is classified as a base.

8. The Arrhenius model states that an acid is a substance that contains hydrogen ions and ionizes to produce hydrogen ions in aqueous solution.

9. Acids taste bitter.

10. In the self-ionization of water, hydronium and hydroxide are the two ions produced.

11. A substance with a pH of 3 is an acid.

12. If you add the pH to the pOH the answer is 14.

13. HCl is hydrochloride acid.

14. The pOH is higher than 8 for acids.

15. Bases react with metals to produce hydrogen gas.

16. Monoprotic ions donate more than one hydrogen ion.

17. The pH is the negative logarithm of the hydrogen ion concentration.

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answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.

Answer from: Quest

gold i'm pretty sure i might be wrong

Answer from: Quest

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.

Answer from: Quest

Molecules called lipids have long hydrocarbon chains that determine the way they act. they can be fats, oils, or hormones, and even exist in our cell membranes

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1. The hydrogen ion and the hydronium ion can be used interchangeably in a...

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