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DiKsa [7]
3 years ago
10

An atom contains one proton, one electron, and one neutron. Which two particles are most similar in mass?

Chemistry
1 answer:
SIZIF [17.4K]3 years ago
3 0

Answer:

Proton and neutron

Explanation:

Electrons are very light, and don't really have a significant impact on the atomic mass

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What happens when water reaches its boiling point?
Luda [366]

Answer:

khi sôi nhiệt độ của nước đạt 100oC, đến lúc này một phần nước sôi sẽ biến thành hơi nước, hơi nước sẽ đùn lên phá vỡ mặt nước và bốc hơi vào không khí, hình thành lên hiện tượng sôi của nước. Nước sôi đánh dấu mốc chuyển đổi trạng thái từ nước (thể lỏng) sang hơi nước (thể khí).

Explanation:

3 0
3 years ago
A solution of saturated pbi2 is found to contain 2.7 ✕ 10−3 m iodide ion. calculate the ksp of pbi2
BigorU [14]
When the compound PbI₂ dissolves, it dissociates as follows;
PbI₂ --> Pb²⁺ + 2I⁻
Molar solubility is the number of moles dissolved in 1 L of solution
A saturated solution is when the maximum amount of solute is dissolved in the solution.
Molar solubility of Iodide when solution is saturated is 2.7 x 10⁻³ mol/L, then solubility of Pb²⁺ is (2.7 x 10⁻³ mol/L) / 2 = 1.35 x 10⁻³ mol/L
ksp is the solubility product constant that can be calculated as follows;
ksp = [Pb²⁺][I⁻]
ksp = (1.35 x 10⁻³ mol/L) x (2.7 x 10⁻³ mol/L)²
      = 1.35 x 10⁻³ x 7.29 x 10⁻⁶
      = 9.8 x 10⁻⁹ 
4 0
4 years ago
Please help me with this question
Tcecarenko [31]

Answer:

Moon

Explanation:

5 0
3 years ago
Each day, changes take place in the atmosphere. All these frequent changes are called _______.
sergij07 [2.7K]
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6 0
3 years ago
Read 2 more answers
How to change 5 % W/V of NaCl to ppm , M ? molar mass = 58.5<br>please clear explain​
11Alexandr11 [23.1K]

Answer:

50000ppm and 0.855M.

Explanation:

ppm is an unit of chemistry defined as the ratio between mg of solute (NaCl) and Liters of solution. Molarity, M, is the ratio between moles of NaCl and liters

A 5% (w/v) NaCl contains 5g of NaCl in 100mL of solution.

To solve the ppm of this solution we need to find the mg of NaCl and the L of solution:

<em>mg NaCl:</em>

5g * (1000mg / 1g) = 5000mg

<em>L Solution:</em>

100mL * (1L / 1000mL) = 0.100L

ppm:

5000mg / 0.100L = 50000ppm

To find molarity we need to obtain the moles of NaCl in 5g using its molar mass:

5g * (1mol / 58.5g) = 0.0855moles NaCl

Molarity:

0.0855mol NaCl / 0.100L = 0.855M

7 0
3 years ago
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