Answer : The correct option is, (D) Velocity
Explanation :
Velocity : It measures the speed of an object in a particular direction. It is a vector quantity. It depends on the magnitude and the direction. The S.I unit of velocity is, 
Distance : It measures the length between the two objects. The S.I unit of distance is, meter.
Speed : It is defined as the distance traveled per unit of time. It does not have a direction. The S.I unit of speed is,
Acceleration : It is defined as the rate of change of velocity of an object with respect to time. The S.I unit of acceleration is, 
Hence, the motion we can determine from the given data is, velocity.
Answer:
61 mole % propylcyclohexane and 39 mole % propylbenzene
Explanation:
For convenience, let’s call propylcyclohexane <em>Component 1 </em>and propylbenzene <em>Component 2</em>.
According to <em>Raoult’s Law</em>,
and
where
<em>p</em>₁ and <em>p</em>₂ are the vapour pressures of the components above the solution
χ₁ and χ₂ are the mole \fractions of the components
<em>p</em>₁° and <em>p</em>₂° are the vapour pressures of the pure components.
So,
= <em>p</em>₁ + <em>p</em>₂= 461 torr + 290 torr = 751 torr
∴ In the vapour
χ₂ = 1 – χ₁ = 1 - 0.61 = 0.39
Answer:
Explanation:
H3PO4(aq) + 3NaOH(aq) → Na3PO4(aq) + 3H2O(l)
mole of NaOH = 23.6 * 10 ⁻³L * 0.2M
= 0.00472mole
let x be the no of mole of H3PO4 required of 0.00472mole of NaOH
3 mole of NaOH required ------- 1 mole of H3PO4
0.00472mole of NaOH ----------x
cross multiply
3x = 0.0472
x = 0.00157mole
[H3PO4] = mole of H3PO4 / Vol. of H3PO4
= 0.00157mole / (10*10⁻³l)
= 0.157M
<h3>The concentration of unknown phosphoric acid is 0.157M</h3>
Answer:
a) 
b) 1657 €
Explanation:
Hola,
a) En este problema, vamos a considerar el millón de litros de agua anuales, ya que con ellos podemos calcular el calor requerido para dicho calentamiento, sabiendo que la densidad del agua es de 1 kg/L:
Luego, usamos la entalpía de combustión del metano para calcular su requerimiento en kilogramos, sabiendo que la energía ganada por el agua, es perdida por el metano:
b) En este caso, consideramos que a condiciones normales de 1 bar y 273 K, 1 metro cúbico de metano cuesta 0,45 €, con esto, calculamos las moles de metano a dichas condiciones:
Con ello, los kilogramos de metano que cuestan 0,45 €:
Luego, aplicamos la regla de tres:
0.715 kg ⇒ 0.45 €
2630 kg ⇒ X
X = (2630 kg x 0.45 €) / 0.715 kg
X = 1657 €
Regards.
Answer:2
Explanation:
Ba(OH)2 contains two oxygen atoms
BaSO4 contains four oxygen atoms.
This means that barium sulphate contains two more oxygen atoms than barium hydroxide in its formula. This is clearly seen from the two formulae shown above.
