All categories

3 years ago

Hello, So I was wondering if this is correct... Is it?

Chemistry

2 answers:

Sonja [21]3 years ago

4 0

Looks correct but the second to last I would of put abiotic and biotic factors but I don’t know what’s right for you

Olenka [21]3 years ago

3 0

Looks correct although I’m not sure about the last one the answer might not be trend maybe something else

You might be interested in

Mass defect for the isotope thorium-234 = 1.85864 amu.

SIZIF [17.4K]

Answer:

3.09 × 10-27 kg

Explanation:

I also had this question on edge and got it correct

8 0

3 years ago

Read 2 more answers

2. Petroleum is used to make

Nonamiya [84]

Answer:

D. all of the above

Explanation:

5 0

3 years ago

A 360 −mL can of soda pop contains 47 g of sucrose (C12H22O11). What is the molarity of the solution with respect to sucrose?

Nitella [24]

Answer:

this us a pm interesting question

Explanation:

good job

8 0

3 years ago

Read 2 more answers

Calculate the concentration of OH in a solution that contains 3.9 10-4 M H30 at 25°C. Identify the solution as acidic, basic or

Norma-Jean [14]

Answer:

Option A) 2.6 × 10⁻¹¹ M, acidic.

Explanation:

The ion-product constant of water $K_{\rm w}$ gives a relationship between $\rm [H_3O^{+}]$ and $\rm [OH^{-}]$ :

$K_{\rm w} = \rm [H_3O^{+}]\cdot [OH^{-}]$ .

The exact value of $K_{\rm w}$ depends on the temperature. Under $\rm 25^{\circ}C$ , $K_{\rm w} \approx 1^{-14}$ .

The question states that $\rm [H_3O^{+}] = 3.9\times 10^{-4}\; M$ . As a result,

$\begin{aligned} {\rm [OH^{-}]} &= \frac{K_{\rm w}}{[{\rm H_3O^{+}}]}\\ &\approx\frac{1^{-14}}{3.9\times 10^{-4}} && \rm {\leftarrow Only~under~25^{\circ}C.}\atop{}\\&\approx \rm 2.6\times 10^{-11}\; M\end{aligned}$ .

A solution is acidic if $\rm [H_3O^{+}] > [OH^{-}]$ .
A solution is neutral if $\rm [H_3O^{+}] = [OH^{-}]$ .
A solution is acidic if $\rm [H_3O^{+}] < [OH^{-}]$ .

$\rm [H_3O^{+}] > [OH^{-}]$ for this solution. As a result, this solution is acidic.

8 0

3 years ago

18. This reaction uses hydrogen

Helga [31]

Pneumonoultramicroscopicsilicovolcanoconiosis

6 0

4 years ago