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3 years ago

Define: 1. acids, 2. strong acids, 3. weak acids.

Chemistry

2 answers:

Reika [66]3 years ago

4 0

H^+ = acid
OH^- = alkaline

Acids have a pH of below 7. The lower the number, the strongest the acid.

Sveta_85 [38]3 years ago

3 0

Answer:

1.substance that releases hydrogen ions when dissolved in water.

2.They ionise completely in water. All acid particles dissocate to release H+ ions

3.An acid that doesnt fully ionise in a soluble.

Small portion of acid particles dissocate to release H+ ions.

Explanation:

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Please Help - Complete the table

mario62 [17]

Answer:

Proteins

Elements: C, H, O, N, and some S

Monomer: amino acids

Functions: catalyzing chemical reactions, synthesizing and repairing DNA, structural support, transporting materials across the cell

Examples: hemoglobin, actin and myosin, albumin, keratin

Carbohydrates

Elements: C, H, O

Monomer: monosaccharides

Functions: cellular identity, source of energy, storage of energy, structural support, cell signaling, make ATP, convert solar energy

Examples: glucose, starch, glycogen, peptidoglycan, cellulose, chitin

Nucleic Acids

Elements: C, H, O, N, P

Monomer: nucleotides

Functions: storage and expression of genetic information, transmission of genetic code required for making proteins

Examples: DNA, RNA

Lipids

Elements: C, H, O, and some P and N

Monomer: fatty acids

Functions: energy storage, cell structure, insulation and protection, regulating and signaling, digestion

Examples: steroids (cholesterol), waxes, fats and oils, phospholipids

Hope that helps.

7 0

2 years ago

How many grams of NaOH are contained in 500 mL of a 0.80 M sodium hydroxide solution?

4vir4ik [10]

This is molarity: moles of solute/liters of solution. (Not molality)

1. Plug in what we know:

500 mL = 0.5 L

0.80 = moles/0.5

0.80*0.5 = moles

moles = 0.4

2. NaOH is given as 40 g/mole, so calculate the grams:

0.4 * 40 = 16 grams

answer: 16 grams

7 0

2 years ago

Hello, So I was wondering if this is correct... Is it?

Sonja [21]

Looks correct but the second to last I would of put abiotic and biotic factors but I don’t know what’s right for you

4 0

2 years ago

Read 2 more answers

One mole of which of these compounds contains two moles of hydrogen atoms? f NaOH g H2S h CH4 j NH3

Bas_tet [7]

G. H2S contains two hydrogen atoms

4 0

2 years ago

19. Which of the following best describes the role of the spark from the spark plug in an automobile engine?

sergey [27]

The role of a spark plug is to supply some of the energy of activation for the combustion reaction.

Explanation:

A Spark plug is a tiny bolt of lightning in which a spark of electricity is emitted across a gap creating the ignition of the combustion chamber thereby starting the engine. By putting an engine piston in motion we can power up which produces a smooth burn of the compressed air-fuel mixture.

An electrical device that fits into the cylinder head and ignites compressed aerosol gasoline by an electric spark. They have an insulated electrode connected to a coil that ignites thereby producing sparks.
The spark plug works as a heat exchanger. They tend to pull unwanted thermal energy from the combustion chamber and heat is transferred to the engine's cooling system. Thus they supply some of the energy for the activation of engines.

4 0

3 years ago