Answer:
Distancia = 925 metros.
Explanation:
Dados los siguientes datos;
Tiempo = 50 segundos
Velocidad = 18.5 m/s
Para encontrar la distancia recorrida;
Matemáticamente, la distancia viene dada por la fórmula;
Sustituyendo en la fórmula, tenemos;
Distancia = 925 m.
Por tanto, el cuerpo recorrió una distancia de 925 metros.
Answer: The amount of heat needed is = 4.3kJ
Explanation:
Amount of heat H = M × C × ΔT
M= mass of benzene = 64.7g
C= specific heat capacity = 1.74J/gK
ΔT = T2-T1
Where T1 is initai temperature = 41.9C
T2 is the final temperature( boiling point of benzene) = 80.1C
H= 64.7×1.74×80.7
H= 4300J
H=4.3kJ
Therefore, the amount of heat needed is 4.3kJ
Answer: a)
is the limiting reagent
b) 3.59 g
c) 11.6g
Explanation:
To calculate the moles :


According to stoichiometry :
a) 9 moles of
require= 4 moles of
Thus 0.15 moles of
will require=
of 
Thus
is the limiting reagent as it limits the formation of product and
is the excess reagent.
b) As 9 moles of
give = 8 moles of 
Thus 0.15 moles of
give =
of 
Mass of 
c) As 9 moles of
give = 3 moles of 
Thus 0.15 moles of
give =
of 
Mass of 
Answer: metal
Explanation: it says element so conductor and semiconductor are out and a halogen is a group of gases on the periodic table so this brings up to a conclusion of metal.
NOTE: I am not a professional***
The scientist that performed the cathode ray experiment leading to the discovery of electrons is J.J. Thomson.
<h3>What is a cathode ray?</h3>
A cathode ray is a tube that contains negatively charged electrode( that is the cathode) which emits electrons when heated at a low pressure.
The cathode ray was used by the scientist, J.J. Thomson to find the ratio of charge to mass (e/m) of the electrons.
Therefore, the scientist that performed the cathode ray experiment leading to the discovery of electrons is J.J. Thomson.
Learn more about electrons here:
brainly.com/question/11316046
#SPJ1