They speed up the breakdown of food in the stomach.
Answer:
there is no chance of any defects. 2) The position of isotopes becomes clarified in modern periodic table. That is the main two reasons as to why modern periodic table is less defective than Mendeeleev's periodic table.
Explanation:
Reason 1:- It is based on atomic number.
Reason 2:-Problem regarding Position of isotopes is resolved.
Reason 3:-Problem of position of Cobalt and Nickel is resolved whigh were placed wrongly in mandeelev periodic table.
Reason 4:-Blank spaces which were there in mandeelev periodic table are no more vacant now.
Answer:
i believe that the answer is D.
Explanation:
Answer:
a)
b)
c)
Explanation:
Hola.
Para resolver los numerales a), b) y c), debemos seguir los siguientes procedimientos:
a) En este caso, primeo calculamos la masa que 45.9 cm³ ocupan con una densidad 0.924 g/cm³ como se muestra a continuación:
Seguidamente, sabiendo que estos gramos ocupan 0.275 moles, podemos facilmente calcular la masa molar como la relación entre ellas:
b) En este caso, como se tienen 120 cm³ calculamos la nueva masa:
Luego, con la masa molar, las moles:
Finalmente, con el número de Avogadro, las moléculas presentes:
c) Aquí, consideramos que hay una molécula de la sustancia, por lo que usando el número de Avogadro, podemos calcular las moles que una molécula tiene:
Luego, usando la masa molar, calculamos la masa de una molécula:
¡Saludos!
Power<span> may be defined as the rate of doing work or the rate of using energy. It can be calculated by dividing the energy output or the work done over the time period. It is calculate as follows:
P = W / t
P = 600 J / 4 s
P = 150 Watts</span>