Answer:
375.2 kJ
Explanation:
- H₂(g) +F₂(g) → 2HF(g) +536kJ
The information the equation above provides lets us know that when 2 mol of hydrogen fluoride (HF) are produced, 536 kJ of energy (as heat) is produced.
We can then <u>state a rule of three</u>:
And <u>solve for X</u>:
- X = 1.4 mol * 536 kJ / 2 mol
Answer:
A chemical change can be indicated by a change in color, change in temperature (exothermic or endothermic), change in smell, formation of a precipitate, or the formation of gas bubbles.
Explanation:
this should work
Answer: four.
Carbon has four valence electrons, so it can achieve a full outer energy level by forming four covalent bonds. When it bonds only with hydrogen, it forms compounds called hydrocarbons. Carbon can form single, double, or triple covalent bonds with other carbon atoms
a positively charged nucleus is surrounded by mostly empty space.
Answer:
- Lipids: used for long-term energy storage
- Nucleic acids: used for storing and transmitting genetic information
- Protein: used for tissue repair and growth
- Carbohydrates: used for energy
Explanation:
These terms simply have to be memorized, but understanding their structure can help you gain a better grasp of their functions. Lipids have fatty acid chains with lots of bonds, so they are high energy. Nucleic acids have pieces that can be rearranged into many combinations that can be read by certain structures. Proteins are composed of different building blocks with different properties. The sum of these properties is the function of the protein. Lastly, carbohydrates have compact monomers that are extremely easy to break apart into energy.
