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2 years ago

A group of students working in a chemistry lab are planning a procedure to

Chemistry

1 answer:

NARA [144]2 years ago

4 0

use a strong base to neutralize, like NaOH, KOH, etc

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The bright-line spectrum of an element in the gaseous phase is produced as

sesenic [268]

Electrons move from higher energy states to lower energy states Hope this helped

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3 years ago

Someone has left a shiny metal bowl outside in the sun. Which may have the potential to damage your eyes: looking at the outside

STatiana [176]

Answer:

Looking at the inside of the bowl

Explanation:

The curvature of the bowl would likely focus the light to a single point or area above it. This higher intensity area would be more dangerous to look at.

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3 years ago

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Convert 64,567 milliliters into nanometers

LiRa [457]

Answer:

64567000000 nanolitres

Explanation:

Base 10 decimal system: 1 milli = 1000000 nano

We simply multiply 64,567 millilitres by 1000000 to get our number in nanolitres:

64567(1000000) = 64567000000 nanolitres

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3 years ago

How many moles of oxygen atoms are present in 30.5 grams of hydrogen peroxide (h2o2)?

Pepsi [2]

1.8 moles of oxygen atoms are present in 30.5 grams of hydrogen peroxide.

<u>Explanation:</u>

First we have to convert the given weight of hydrogen peroxide to molar mass of hydrogen peroxide. So for this, we have to divide the given weight with the molecular mass of hydrogen peroxide.

$\text {Molecular mass of } \mathrm{H}_{2} \mathrm{O}_{2}=(2 \times 1)+(2 \times 16)=2+32=34 \mathrm{g}$

So,

$\text {Molar mass of } \mathrm{H}_{2} \mathrm{O}_{2}=\frac{30.5}{34}=0.90 \text { moles of } \mathrm{H}_{2} \mathrm{O}_{2}$

Second step, in this moles, 2 molecules of oxygen are present. Thus 1 mole of Hydrogen peroxide consists of 2 moles of oxygen. Then,

$0.90 moles of $\mathrm{H}_{2} \mathrm{O}_{2}=2 \times 0.90=1.8$ moles of oxygen$

So, 30.5 grams of hydrogen peroxide consists of 1.8 moles of oxygen.

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3 years ago

Answer Fast Please!!!

den301095 [7]

Answer:

The Periodic Table is organized in order of atomic number.

Explanation:

Plz give me brainliest I worked hard on this... thank u in advance.

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3 years ago

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