Calculate the acceleration of this object (picture below) net force:
acceleration:

aₓ = 10 m/s²

∑Fₓ = 20 N

Explanation:

Given data:

Mass of object = 2 Kg

Forces = 25 N, 45 N

Net force = ?

Acceleration = ?

Solution:

∑Fₓ = +F -F

∑Fₓ = 45 N - 25 N

∑Fₓ = 20 N

Net force is in horizontal direction thus acceleration must be in horizontal direction.

Acceleration:

∑Fₓ = maₓ

20 N = 2 Kg × aₓ

aₓ = 20 N/2Kg

N = kg.m/s²

aₓ = 10 kg.m/s²/Kg

aₓ = 10 m/s²

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2