Answer:
negative
the chage on hydroxide ions os negative
Answer: 2755.2 g of
will be produced from 24.6 mol of haematite.
Explanation:
The balanced chemical equation is:
According to stoichiometry :
1 mole of
produce = 2 moles of 
Thus 24.6 moles of
will produce=
of
Mass of 
Thus 2755.2 g of
will be produced from 24.6 mol of haematite.
Answer:

Explanation:
Hello,
In this case, since the density is defined as the ratio between the mass and the volume as shown below:

We can compute the density of water for the given 43 g that occupy the volume of 43 mL:

Regards.
Answer : The temperature of this gas will be, 206.9 K
Explanation :
The expression for the kinetic energy per molecule of monoatomic gas (argon) is:
...........(1)
The expression for the kinetic energy per molecule of diatomic gas (nitrogen gas) is:
.............(2)
The total kinetic energy of the molecule will be,

Now put all the expression in this, we get:


Now put all the given values in this expression, we get:


Therefore, the temperature of this gas will be, 206.9 K
Answer:
When we kick the ball, the force we apply to it causes it to accelerate from a speed of 0 to a speed of dozens of kilometers per hour. When the ball is released from the foot, it begins to decelerate (negative acceleration) due to the force of friction that is exerted upon it (as we observed in the previous example).
Explanation: