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lesantik [10]
3 years ago
9

In a mechanical clock, the swinging of a pendulum causes the hands to move. The diagram shows the path of the pendulum as it swi

ngs. At which point in its swing does the pendulum have the least gravitational potential energy?

Chemistry
2 answers:
lesya [120]3 years ago
7 0
The answer is Point C because it is the lowest point
Tanya [424]3 years ago
5 0

Answer:

Point C

Explanation:

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Difference between atom and ion <br>plz plz answer ​
hjlf

Answer:

Pls mark me brainliest

Explanation:

Atoms are neutral; they contain the same number of protons as electrons. By definition, an ion is an electrically charged particle produced by either removing electrons from a neutral atom to give a positive ion or adding electrons to a neutral atom to give a negative ion. When an ion is formed, the number of protons does not change.

Neutral atoms can be turned into positively charged ions by removing one or more electrons. A neutral sodium atom, for example, contains 11 protons and 11 electrons. By removing an electron from this atom we get a positively charged Na+ ion that has a net charge of +1.

Atoms that gain extra electrons become negatively charged. A neutral chlorine atom, for example, contains 17 protons and 17 electrons. By adding one more electron we get a negatively charged Cl- ion with a net charge of -1.

The gain or loss of electrons by an atom to form negative or positive ions has an enormous impact on the chemical and physical properties of the atom. Sodium metal, for example, which consists of neutral sodium atoms, bursts into flame when it comes in contact with water. Neutral chlorine atoms instantly combine to form Cl2 molecules, which are so reactive that entire communities are evacuated when trains carrying chlorine gas derail. Positively charged Na+ and negatively charged Cl- ions are so unreactive that we can safely take them into our bodies whenever we salt our food.

3 0
3 years ago
Read 2 more answers
What is the initial pressure of a gas if it’s occupied a volume of 0.375 L but now occupies a volume of 1.25 L at a pressure of
MrMuchimi

Answer:

318 kPa

Explanation:

Step 1: Given data

  • Initial pressure (P₁): ?
  • Initial volume (V₁): 0.375 L
  • Final pressure (P₂): 95.5 kPa
  • Final volume (V₂): 1.25 L

Step 2: Calculate the initial pressure of the gas

Assuming constant temperature and ideal behavior, we can calculate the initial pressure of the gas using Boyle's law.

P₁ × V₁ = P₂ × V₂

P₁ = P₂ × V₂ / V₁

P₁ = 95.5 kPa × 1.25 L / 0.375 L = 318 kPa

7 0
2 years ago
2. Write a balanced chemical equation from the following descriptions.
Kitty [74]

Answer:

AgNO3 + NaCl ---> AgCl + NaNO3

4 0
3 years ago
In the final stage of the nuclear fuel cycle, the spent fuel must be transported, processed, and disposed of properly. True Fals
Aleksandr [31]
True
After the process of Ore processing, Enrichment, Fuel production and being passed through the reactor core the last remaining step is spent fuel disposal. 
8 0
3 years ago
Read 2 more answers
What is the mass percent of oxygen in sodium bicarbonate (NaHCO3)?
Alenkasestr [34]
The answer is 57.14%.

First we need to calculate molar mass of <span>NaHCO3. Molar mass is mass of 1 mole of a substance. It is the sum of relative atomic masses, which are masses of atoms of the elements.

Relative atomic mass of Na is 22.99 g
</span><span>Relative atomic mass of H is 1 g
</span><span>Relative atomic mass of C is 12.01 g
</span><span>Relative atomic mass of O is 16 g.
</span>
Molar mass of <span>NaHCO3 is:
22.99 g + 1 g + 12.01 g + 3 </span>· <span>16 g = 84 g

Now, mass of oxygen in </span><span>NaHCO3 is:
3 </span>· 16 g = 48 g

mass percent of oxygen in <span>NaHCO3:
48 g </span>÷ 84 g · 100% = 57.14%

Therefore, <span>the mass percent of oxygen in sodium bicarbonate is 57.14%.</span>
8 0
3 years ago
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