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3 years ago

Why do object change speed or direction?

Chemistry

1 answer:

Vadim26 [7]3 years ago

8 0

The force upon a moving object

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Molarity of 2%W/V of NaOH is

TiliK225 [7]

Assume it is 1 litre and weighs 1kg.
2 percent of 1 kg is 20g.
20g divided by molar mass of NaOH.
20g divide by 40 = 0.5 mole
0.5 mole in a litre would be 0.5M
That is the answer: 0.5M

6 0

2 years ago

which change in the temperature of the one gram sample of water would cause the greatest increase in average kinetic energy of i

LenaWriter [7]

Maybe about in the 50ths

8 0

3 years ago

In methane combustion, the following reaction pair is important: At 1500 K, the equilibrium constant Kp has a value of 0.003691

andre [41]

Explanation:

Let us assume that the value of $K_{r}$ = $2.82 \times 10^{5} \times e^({\frac{-9835}{T}}) m^{6}/mol^{2}s$

Also at 1500 K, $K_{r}$ = $2.82 \times 10^{5} \times e^({\frac{-9835}{1500}}) m^{6}/mol^{2}s$

$K_{r} = 400.613 m^{6}/mol^{2}s$

Relation between $K_{p}$ and $K_{c}$ is as follows.

$K_{p} = K_{c}RT$

Putting the given values into the above formula as follows.

$K_{p} = K_{c}RT$

$0.003691 = K_{c} \times 8.314 \times 1500$

$K_{c} = 2.9 \times 10^{-7}$

Also, $K_{c} = \frac{K_{f}}{K_{r}}$

or, $K_{f} = K_{c} \times K_{r}$

= $2.9 \times 10^{-7} \times 400.613$

= $1.1617 \times 10^{-4} m^{6}/mol^{2}s$

Thus, we can conclude that the value of $K_{f}$ is $1.1617 \times 10^{-4} m^{6}/mol^{2}s$ .

6 0

2 years ago

A force is applied but nothing happens

Lana71 [14]

If a force is applied but nothing happens, then it means that the forces are balanced. Being at such state, equal forces are acting on an object in opposite directions. Hope this answers the question. Have a nice day. Feel free to ask more questions.

7 0

2 years ago

What is chemical reaction ?

butalik [34]

Answer: Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products.

Explanation:

7 0

2 years ago