Ask question

Ask question

All categories

3 years ago

6

What is 125000 in scientific notation?

1 answer:

Usimov [2.4K]3 years ago

7 0

Answer:

1.25 x 10^5

Explanation:

You might be interested in

During an experiment, the percent yield of calcium chloride from a reaction was 85.22%. Theoretically, the expected amount shoul

devlian [24]

The formula to find yield is

(Actual Yield)/(Theorectical Yield) x100

Just do the math.

85.22% x 113 = 96.2986

Convert it to 3 significant figures

Ans: 96.3g

7 0

3 years ago

Read 2 more answers

Which of these best describes the bonding between oxygen and hydrogen in the water molecule?

DaniilM [7]

It is a Polar Covalent.

3 0

3 years ago

Draw an atomic structure of Sodium (Na). What are sub-atomic particles?

xxMikexx [17]

Sodium represents by the (Na).

7 0

1 year ago

In a constant‑pressure calorimeter, 70.0 mL of 0.310 M Ba ( OH ) 2 was added to 70.0 mL of 0.620 M HCl . The reaction caused the

Leno4ka [110]

Explanation:

Below are attachments containing the solution

5 0

2 years ago

) PABA refers to para-aminobenzoic acid which is used in some sunscreen formulations. If a 0.055 M solution of PABA has a pH of

AleksandrR [38]

Answer: $K_a$ of PABA is 0.000022

Explanation:

$NH_2C_6H_5COOH\rightarrow H^++NH_2C_6H_5COO^-$

cM 0 0

$c-c\alpha$ $c\alpha$ $c\alpha$

So dissociation constant will be:

$K_a=\frac{(c\alpha)^{2}}{c-c\alpha}$

Give c= 0.055 M and $\alpha$ = ?

$K_a=?$

$pH=-log[H^+]$

$2.96=-log[H^+]$

$[H^+]=1.09\times 10^{-3}$

$[H^+]=c\times \alpha$

$1.09\times 10^{-3}=0.055\times \alpha$

$\alpha=0.02$

Putting in the values we get:

$K_a=\frac{(0.055\times 0.02)^2}{(0.055-0.055\times 0.02)}$

$K_a=0.000022$

Thus $K_a$ of PABA is 0.000022

5 0

2 years ago