I googled it, here it is lol
Answer: Atoms contain tiny, negatively charged electrons
Explanation: Thomson's experiments with cathode ray tubes helped him to discover the electron (which Dalton did not know about). Dalton thought that atoms were indivisible particles, and Thomson's discovery of the electron proved the existence of subatomic particles.
<u>Answer:</u> The correct answer is Option B.
<u>Explanation:</u>
There are 3 subatomic orbitals which are present in an atom:
1. Protons: These sub-atomic particles are positively charged and are found in the nucleus.
2. Electrons: These sub-atomic particles are negatively charged and are found in the orbitals around the nucleus.
3. Neutrons: These sub-atomic particles carry no charge and are known as electrically neutral species. These particles are found in the nucleus.
From the above information, the answer to this question is Option B.
Answer:
3.7 °C
Explanation:
Step 1: Given and required data
- Initial temperature (T₁): 3.2 °C
- Specific heat capacity of water (c): 4.184 J/g.°C
Step 2: Calculate the final temperature (T₂) of the water
We will use the following expression.
Q = c ×m ×(T₂ - T₁)
T₂ = Q / c × m + T₁
T₂ = 15 J / (4.184 J/g.°C) × 7.3 g + 3.2 °C = 3.7 °C
