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ZanzabumX [31]
3 years ago
15

How would a sandblasted rock differ from a rock that hasn't been sandblasted?

Chemistry
1 answer:
steposvetlana [31]3 years ago
3 0
A non-sandblasted rock could be rough or smooth depending on how it was formed.

A sandblasted rock should be much smoother, since the sand blasts away any rough edges. It will, however, be slightly smaller due to losing those edges.
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2. What charge does an electron have? a. Positive b. Negative c. Neutral d. No charge
SashulF [63]
The answer is negative, since neutron is neutral and Protons have Positive.
7 0
3 years ago
Thermal energy added to a substance that is not changing state causes the substance’s temperature to
tatyana61 [14]

Answer:

increase

Explanation:

Conduction involves the transfer of electric charge or thermal energy due to the movement of particles. When the conduction relates to electric charge, it is known as electrical conduction while when it relates to thermal energy, it is known as heat conduction. Conductors include metal, steel, aluminum, copper, frying pan, pot, spoon etc.

In the process of heat conduction, thermal energy is usually transferred from fast moving particles to slow moving particles during the collision of these particles. Also, thermal energy is typically transferred between objects that has different degrees of temperature and materials (particles) that are directly in contact with each other but differ in their ability to accept or give up electrons.

Hence, thermal energy added to a substance that is not changing state causes the substance’s temperature to increase because it would absorb energy in the form of heat.

6 0
3 years ago
In the reaction, 2Na (s) + 2H2O (l) → 2NaOH (aq) + H2 (g), which of the reactants or products is in the gas phase?
lys-0071 [83]
Clearly H2 is in gaseous state as could be seen from (g) written with it which tells state of the product
5 0
3 years ago
The question is below
rodikova [14]
The anode is the electrode where the oxidation occurs.

Cathode is the electrode where the reducction occurs.

Equations:

  Mn(2+) + 2e-  --->  Mn(s)                      Eo = - 1.18 V
2Fe(3+) + 2e-  ----> 2 Fe(2+)                2Eo = + 1.54 V

The electrons flow from the electrode with the lower Eo to the electrode with the higher Eo yielding to a positive voltage.

Eo = 1.54 V - (- 1.18) = 1.54 + 1.18 = 2.72

Answer: 2.72 V

3 0
3 years ago
(Boyle's Law):
elena-s [515]

<u>Answer:</u> The final volume will be 16.85 mL

<u>Explanation:</u>

To calculate the new pressure, we use the equation given by Boyle's law. This law states that pressure is inversely proportional to the volume of the gas at constant temperature.  

The equation given by this law is:

P_1V_1=P_2V_2

where,

P_1\text{ and }V_1 are initial pressure and volume.

P_2\text{ and }V_2 are final pressure and volume.

We are given:

Conversion factor: 1 atm = 760 torr

P_1=705torr=0.927atm\\V_1=50mL\\P_2=2.75atm\\V_2=?mL

Putting values in above equation, we get:

0.927atm\times 50mL=2.75atm\times V_2\\\\V_2=16.85mL

Hence, the final volume will be 16.85 mL

4 0
4 years ago
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