Answer:
96 g
Explanation:
Tomando en cuenta que estamos hablando de una solución de Nitrato de potasio cuya concentración es 12% m/V, debemos entonces usar la expresión de %m/V:
%m/V = msto / Vsol * 100 (1)
De esta expresión, debemos despejar la masa de soluto (msto) que es precisamente el valor que estamos buscando. Al hacer el despeje tenemos:
msto = %m/V * Vsol / 100 (2)
Ahora solo nos queda sustituir los valores dados y resolver:
msto = 12 * 800 / 100
<h2>
msto = 96 g de KNO₃</h2>
Espero te sirva.
26.4 kg of calcium hydroxide (Ca(OH)₂)
Explanation:
We have the following chemical reaction:
CaO + H₂O → Ca(OH)₂
molecular weight of Ca(OH)₂ = atomic mass of Ca × number of Ca atoms + atomic mass of O × number of O atoms + atomic mass of H × number of H atoms
molecular weight of Ca(OH)₂ = 40 × 1 + 16 × 2 + 1 × 2 = 74 g/mole
molecular weight of CaO = atomic mass of Ca × number of Ca atoms + atomic mass of O × number of O atoms
molecular weight of CaO = 40 + 16 = 56 g/mole
number of moles = mass / molecular weight
number of moles of CaO = 20 / 56 = 0.357 kmoles
Taking in account the chemical reaction we devise the following reasoning:
if 1 kmole of CaO produces 1 kmole of Ca(OH)₂
then 0.357 kmoles of CaO produces X kmoles of Ca(OH)₂
X = (0.357 × 1) / 1 = 0.357 kmoles of Ca(OH)₂
mass = number of moles × molecular weight
mass of Ca(OH)₂ = 0.357 × 74 = 26.4 kg
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number of moles
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Answer:
An incident ray is a ray of light that strikes a surface.
Answer: Option (c) is the kinetic energy.
Explanation:
The kinetic energy present within the particles of a substance is known as thermal energy. Measure of average kinetic energy of particles of a substance is known as temperature.
Whereas heat defined as the transfer of thermal energy from a hot object to a cold object.
Enthalpy is defined as the heat gained or lost by a substance in a chemical reaction.
Thermodynamics is the study of relation between heat and work with chemical or physical changes.
Thus, we can conclude that a measure of kinetic energy of particle motion within a substance is temperature.
Answer: I kin tommyinnit
Red foxes is the top one
White spruces and willows are the producers
the bottom one is Lynx and hawk.
