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yulyashka [42]
2 years ago
8

PLEASE HELP ASAP I need help with this

Chemistry
1 answer:
dangina [55]2 years ago
4 0

Answer:

sorry pic wont work

Explanation:

i can help if you get the pic to work

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Which of the following would not be considered an observation in terms of the scientific method?
prohojiy [21]

Answer:

the first option, tasting a pasta sauce after adding a new ingredient.

Explanation:

tasting a pasta sauce after adding a new ingredient is not an observation because there is no qualitative or quantitative data to be taken from that experience.

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3 years ago
at standard pressure how do the boiling point and the freezing point of NaCl compare to the boiling point and freezing point of
Ede4ka [16]
Usually in this context you would be referring to the boiling and freezing point of a NaCl <em>solution</em> (saltwater) compared to pure H_{2}O. Sematics would be different for NaCl compound itself, you would say melting and boiling point for a solid substance- and the temperatures would be very, very radical (high). 
The boiling point of pure water is 100 degrees C (212 F), and the freezing/melting point is below 0 degrees C (32 F). For a salt water solution, the boiling point is raised and the melting point is lowered. This means that water will stay liquid for an increased range of temperature. Depending on the amount of NaCl solute in the water, the boiling and melting points may change a few degrees.
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3 years ago
Using the word bank explain why increasing the temperature increases the rate of reaction​
katrin2010 [14]

Answer:Increasing the temperature increases reaction rates because of the disproportionately large increase in the number of high energy collisions. It is only these collisions (possessing at least the activation energy for the reaction) which result in a reaction.

Explanation:

5 0
2 years ago
Why can you never see the far side of the mood from earth?
horsena [70]
The answer is C, because the moon does rotate it just rotates at the perfect time for us to never side the other side of it.  
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2 years ago
Read 2 more answers
Write sulfur dioxide reactions
scZoUnD [109]

Answer:

Sulfur dioxide is a covalent bond because  we have two non-metals (Sulfur and Oxygen).

S + O_{2} \to SO_{2} (<em>Sulfur dioxide formula)</em>

It's called Sulfur dioxide but it can be called Sulfurous anhydride and Sulfur (lV) oxide.

Sulfur dioxide can have different reactions:

  • In the presence of oxygen oxidation of sulfur dioxide to sulfur trioxide occurs and the formula is:

SO_{2}+\frac{1}{2} O_{2}= SO3

The equal is because  it's a reversible equation. This reaction is spontaneous.

  • The sulfur trioxide reacting with water produces sulfuric acid. The formula is:

3 SO_{2} + O_{3} \to 3 SO_{3}\\SO_{3} + H_{2}O \to H_{2}SO_{4}

  • Also the sulfur dioxide reacting with  sodium hydroxide produces sodium sulfite and the formula is:

SO_{2} + 2 NaOH \to Na_{2}SO_{3} + H_{2}O

  • And finally we have the reduction of sulfur dioxide (it can be in presence of  hydrogen sulfide) getting elemental sulfur and water. The formula is:

SO_{2} + 2 H_{2}S \to 3 S + 2 H_{2}O

7 0
3 years ago
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