Answer:
For a liquid, it is 25°F
Explanation:
The standard state for a liquid is 25°C
Answer:
The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups. The elements in each group have the same number of valence electrons. As a result, elements in the same group often display similar properties and reactivity.
Explanation:
Answer: 150g MgO
Explanation:
3.6 moles MgO * (mass of MgO = 24.305 + 15.999 = 40.304/1mole) = 145.0944
only 2 sig figs needed so it will be 150
The cart with the greatest change in speed is the cart with a mass of 75 Kg
Acceleration is defined as the change in velocity of an object with time. Also, acceleration is related to the force and mass according to the following equation:
Acceleration (a) = Force (F) / mass (m)
<h3>a = F / m</h3>
To answer the question, we shall determine the acceleration of each cart.
<h3>For cart of mass 75 kg</h3>
- Mass (m) = 75 Kg
- Force (F) = 200 N
- Acceleration (a) =?
a = F / m
a = 200 / 75
<h3>a = 2.67 m/s²</h3>
<h3>For cart of mass 125 kg</h3>
- Mass (m) = 125 Kg
- Force (F) = 200 N
- Acceleration (a) =?
a = F / m
a = 200 / 125
<h3>a = 1.6 m/s²</h3>
<h3>For cart of mass 350 kg</h3>
- Mass (m) = 350 Kg
- Force (F) = 200 N
- Acceleration (a) =?
a = F / m
a = 200 / 350
<h3>a = 0.57 m/s²</h3>
<h3>For cart of mass 450 kg</h3>
- Mass (m) = 450 Kg
- Force (F) = 200 N
- Acceleration (a) =?
a = F / m
a = 200 / 450
<h3>a = 0.44 m/s²</h3>
From the above illustrations, we can see that the cart with a mass of 75 K has the greatest change in speed (i.e 2.67 m/s²)
Learn more about acceleration: brainly.com/question/390784
Answer:
The answer to your question is 3 moles of Fe and 4.5 moles of S
Explanation:
Data
moles of Fe = ?
moles of S = ?
moles of Fe₂S₃
Unbalanced chemical reaction
Fe + S ⇒ Fe₂S₃
Reactants Elements Products
1 Fe 2
1 S 3
Balanced chemical reaction
2Fe + 3S ⇒ Fe₂S₃
Reactants Elements Products
2 Fe 2
3 S 3
-Calculate the moles of each reactant
2 moles of Fe ------------------- 1 mol of Fe₂S₃
x -------------------- 1.5 moles Fe₂S₃
x = (1.5 x 2) / 1
x = 3 moles of Fe
-Calculate the moles of S
3 moles of S --------------------- 1 mol of Fe₂S₃
x --------------------- 1.5 moles of Fe₂S₃
x = (1.5 x 3) / 1
x = 4.5 moles of S
