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galben [10]
3 years ago
5

HELP if all the forces acting on an object are balanced then

Chemistry
1 answer:
Rashid [163]3 years ago
3 0

Answer:

As per Newton's first laws of motion, everybody continues to be at state of rest or of uniform motion in a straight line unless and until it is compelled by some external unbalanced forces acting on it.

Hence, it is the unbalanced force that changes the state of rest or motion of a body. Balanced force is responsible for keeping the body to be either in static equilibrium or in dynamic equilibrium.

As per the options given in the question, the last one is true for an object under balanced forces.

sorry if this doesn't work

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A voltaic cell is constructed in which the anode is a Fe|Fe2 half cell and the cathode is a Cd|Cd2 half cell. The half-cell comp
Svetradugi [14.3K]

Answer: The Anode reaction is Fe(s)\rightarrow Fe^{2+}(aq)+2e^-

Explanation:

Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.

Oxidation reaction is defined as the reaction in which a substance looses its electrons.Oxidation occurs at anode.

Anode : Fe(s)\rightarrow Fe^{2+}(aq)+2e^-

Reduction reaction is defined as the reaction in which a substance gains electrons. Reduction occurs at cathode.

Cathode : Cd^{2+}(aq)+2e^-\rightarrow Cd(s)

3 0
3 years ago
In the target above, how would you classify the "hits"? (note: an accurate "hit" is a bull's-eye.)
Dominik [7]
B) Accurate is the right answer
5 0
4 years ago
1. You find a separatory funnel set up in a fume hood. There are clearly two visible layers. Describe a method you could use to
hoa [83]

Answer:

You find a separatory funnel set up in a fume hood. There are clearly two visible layers. Describe a method you could use to determine which layer is the aqueous layer.

Explanation:

In the separating funnel, the liquid with less density exists at the top layer and the liquid with greater density will exist at the bottom layer.

To identify the aqueous layer, add a bit of water to the separating funnel.

Then, observe where the water will go and mix.

If it mixes with the bottom layer, then the bottom layer is the aqueous layer.

If water mixes with the top layer, then top layer is the aqueous layer.

3 0
3 years ago
CORRECT ANSWER GETS BRAINLIEST!!!!!!!!!!!!
Mrac [35]

Answer:

2, 4, 1, 3, 5

Explanation:

i believe is this a test

please mark this answer as brainlest i got the answer from someone by the way which is my sis

but forget all of that

please mark brainlest

8 0
3 years ago
Read 2 more answers
Gold has an atomic weight of 196.97 g/mol, and a density of 19.3 g/cm3. Approximately how many atoms are in a spherical gold nan
ale4655 [162]

<u>Answer:</u> The number of atoms in spherical gold nano particle are 26.918\times 10^4

<u>Explanation:</u>

  • To calculate the volume of sphere, we use the equation:

V=\frac{4}{3}\pi r^3

where,

r = radius of the sphere = 10nm=10^{-6}cm    (Conversion factor:  1nm=10^{-7}cm )

Putting values in above equation, we get:

V=\frac{4}{3}\times 3.14\times (10^{-6})^3\\\\V=4.19\times 10^{-18}cm^3

  • To calculate mass of of the substance, we use the equation:

\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}

Volume of gold = 4.19\times 10^{-18}cm^3

Density of gold = 19.3g/cm^3

Putting values in above equation, we get:

19.3g/cm^3=\frac{\text{Mass of gold}}{4.19\times 10^{-18}}\\\\\text{Mass of gold}=8.0867\times 10^{-17}g

  • To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Mass of gold = 8.8067\times 10^{-17}g

Molar mass of gold = 196.97 g/mol

Putting values in above equation, we get:

\text{Moles of gold}=\frac{8.8067\times 10^{-17}g}{196.97g/mol}=4.47\times 10^{-9}moles

  • According to mole concept:

1 mole of an element contains 6.022\time 10^{23}  number of atom

So, 4.47\times 10^{-19} moles of gold will contain = 4.47\times 10^{-19}\times 6.022\times 10^{23}=26.918\times 10^4 number of atoms.

Hence, the number of atoms in spherical gold nano particle are 26.918\times 10^4

8 0
3 years ago
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