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emmasim [6.3K]
2 years ago
11

A simple circuit with a battery connected to a buzzer by electrical wires is placed on a table. When the buzzer sounds, the tabl

e begins to ratte. Which form of energy makes the table rattle?
chemical
ОО
electrical
heat
mechanical
Chemistry
1 answer:
Ainat [17]2 years ago
7 0

Answer:

Mechanical

Explanation:

mechanical energy:

energy that an object has

because of its motion or

position

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The public is not yet able to purchase cars powered by hydrogen fuel cells because engineers have to determine how the cars perf
Leya [2.2K]

Answer:

It’s B just did it

Explanation:

6 0
3 years ago
Write the net ionic equation for the reaction between hydrocyanic acid and potassium hydroxide. Do not include states such as (a
eimsori [14]

Answer:

The net ionic equation is as follows:

HCN(aq) + OH-(aq) ----> H20(l) + CN-(aq)

Explanation:

The reaction between Hydrocyanic acid, HCN, and sodium hydroxide is a neutralization reaction between a weak acid and a strong base.

Hydrocyanic acid being a weak acid ionizes only slightly, while sodium hydroxide being a strong base ionizes completely. The equation for the reaction is given below:

A. HCN(aq) + NaOH-(aq) ----> NaCN(aq) + H2O(l)

Since Hydrocyanic acid is written in the aqueous form as it ionizes only slightly and the ionic equation is given below:

HCN(aq) + Na+(aq)+OH-(aq) ----> Na+(aq)+CN-(aq) + H2O(l)

Na+ being a spectator ion is removed from the net ionic equation given below:

HCN(aq) + OH-(aq) ----> H20(l) + CN-(aq)

4 0
3 years ago
If more solute can be dissolved in a solvent, the solution is
WARRIOR [948]

Answer:

the answer is unsaturated

Explanation:

A saturated solution contains more solute per volume of solvent than an unsaturated solution. The solute has dissolved until no more can, leaving undissolved matter in the solution. ... In a supersaturated solution, there is more dissolved solute than in a saturated solution.

7 0
3 years ago
Many factors influence the amount of a solute which will dissolve in a solvent.<br> True<br> False
Nikitich [7]
This is true there are many factors that influence the amount of a solute.
8 0
2 years ago
How many moles of CO2 will be produced from 97.0 g of C3 Hy, assuming O2 is available in excess?
xeze [42]

Answer:

<em></em>

  • <em>291 / (36 + y)</em>

Explanation:

Regardless of the value of the y subscript, the number of moles of CO₂ that can be produced from 1 mol of  C_3H_y is 3 moles: that is so because every molecule of   C_3H_y contains 3 atoms of C and every atom of C produces one molecule of  CO₂.

Then, you can calculate the number of moles of  C_3H_y in 97.0g using the molar mass of the compound:

<u />

<u>1. Molar mass of    </u>C_3H_y<u> :</u>

  • 3 × 12g/mol + y × 1 g/mol = (36 + y)g/mol

<u />

<u>2. Number of moles = mass in grams / molar mass</u>

  • Number of moles of    C_3H_y  =

                                           =   97.0 g / (36 + y)g/mol = 97.0/(36+y) mol

<u />

<u>3. Number of moles of CO₂</u>

As stated above, the number of moles of CO₂  is 3 times the number of moles of    C_3H_y :

  • Number of moles of CO₂ = 3 × 97.0 / (36 + y) mol = 291 / (36 + y)

For instance, imagine the compound is C₃H₈. How many moles of CO₂ will be produced from 97.0 g of C₃H₈?

You can replace 8 for y:

  • 291 / (36 + 8) mol = 291.0 / (44) mol = 6.61 mol

3 0
3 years ago
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