All categories

3 years ago

In scientific notation, the number .000 000 753 should be written as

Chemistry

1 answer:

kramer3 years ago

3 0

Answer:

Explanation:

You want one whole number to the left of the decimal. Depending on how many times u have to move the decimal over (in this case 7 times) determines the number you put after 10. And its -7 because to get it back to its original position you have to move left, which is a negative direction.

You might be interested in

Wavy bands of light and dark minerals visible in gnesis bedrock probably formed from the ?

HACTEHA [7]

it is number 4 heat and pressure during metamorphism

3 0

3 years ago

Read 2 more answers

How much 5.50M NaOH must be added to 680.0 mL of a buffer that is 0.0215 M acetic acid and 0.0270 M sodium acetate to raise the

Lelu [443]

5.50M NaOH must be added to 680.0 mL of a buffer, The amount of NaOH is mathematically given as

V=2.107mL

<h3>What is the volume of 5.50M NaOH?</h3>

Generally, the equation for Chemical Reaction is mathematically given as

CH3COOH+OH^{-} ⇄ CHCOO^{-} + H2O

Therefore

pka=-log(1.8*10{-5})

pKa=5-0.25527

pKa=4.3447

Hence

$pH=pKa+log\frac{CH3COO}{CH3COOH}\\\\0.75=4.7447+log\frac{0.01564+x}{0.01428-x}$

x=0.0115898

Volume of NaOH

V=0.0021072L

V=2.107mL

Read more about Chemical Reaction

brainly.com/question/11231920

#SPJ1

5 0

2 years ago

Chalcopyrite, the principal ore of copper (Cu), contains 34.63 percent Cu by mass. How many grams of Cu can be obtained from 7.3

DENIUS [597]

Answer:

$2.55\times 10^{6}g$ Cu can be obtained from $7.35\times 10^{3}kg$ ore

Explanation:

1 kg = 1000 g

So, mass of ore is $(7.35\times 10^{3}\times 1000)g$ = $7.35\times 10^{6}g$

Now, 100 g of ore contains 34.63 g of Cu

So, $7.35\times 10^{6}g$ ore contains $\frac{(34.63g)\times (7.35\times 10^{6}g)}{100g}$ Cu or $2.55\times 10^{6}g$ Cu.

6 0

4 years ago

Some fireplace logs (commercially made) burn with a red and/or green flame. Using the information in this experiment, what eleme

Diano4ka-milaya [45]

Answer:

Because each element has an exactly defined line emission spectrum, scientists are able to identify them by the color of flame they produce. For example, copper produces a blue flame, lithium, and strontium a red flame, calcium an orange flame, sodium a yellow flame, and barium a green flame. When you heat an atom, some of its electrons are "excited* to higher energy levels. When an electron drops from one level to a lower energy level, it emits a quantum of energy. ... The different mix of energy differences for each atom produces different colors. Each metal gives a characteristic flame emission spectrum

5 0

3 years ago

Why are vials made from vapor glass stronger then typical vials?

Drupady [299]

Answer:

Explanation:

I'm not that sure plz tell me if this is right

6 0

3 years ago