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vitfil [10]
3 years ago
8

What is the most useful tool used by chemist?

Chemistry
1 answer:
Alexxandr [17]3 years ago
6 0
<span> a distillation apparatus is, by far, the most useful tool in the toolbox. It’s most basic use allows you to separate chemicals based on their boiling points. That alone is cool. It also allows you to manufacture chemicals by forcing reactions that wouldn’t otherwise occur and reflux reactions that would otherwise take gallons of reactants.</span>
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How many grams are in 3.00 x 10^24 molecules of Zn(C2H3O2)2?​
Burka [1]

Answer:

Mass = 917.4 g

Explanation:

Given data:

Number of molecules = 3.00 ×10²⁴ molecules

Mass in gram = ?

Solution:

1 mole contain 6.022 × 10²³ molecules

3.00 ×10²⁴ molecules × 1 mol /  6.022 × 10²³ molecules

0.5×10¹ mol

5 mol

Mass in gram:

Mass = number of moles  × molar mass

Mass = 5 mol  × 183.48 g/mol

Mass = 917.4 g

7 0
3 years ago
An object with a mass of 3.5 g raises the level of water in a graduated cylinder from 25.1 mL to 31.7 mL. What is the density of
vodomira [7]

density of the object = 0.53 g/mL

Explanation:

First we need to find the volume of the object which is equal to the rise of the water in the graduated cylinder:

volume = 31.7 - 25.1 = 6.6 mL

Now we calculate the density of the object using the following formula:

density = mass / volume

density = 3.5 g / 6.6 mL

density = 0.53 g/mL

Learn more about:

density

brainly.com/question/14177957

#learnwithBrainly

4 0
3 years ago
The Bantu were experts in this form of metallurgy. gold steel iron copper
son4ous [18]
they're experts in iron metallurgy

The bantu was originated from the southern part of Africa ( round republic of Congo) , and has been the expert of utilizing iron among the ancient tribe

Mostly they use it for their Agricultural  system ( such as their Irrigation system, for their agricultural tools, etc)
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4 0
3 years ago
Read 2 more answers
The boat shown in the photo below is moving along at a constant 20 miles per hour. Is the boat accelerating? Question 3 options:
SVETLANKA909090 [29]

Answer:

A

Explanation:

If its going at a constant speed it will not accelarate wich means to speed up.

4 0
3 years ago
Ways to manage non-biodegradable waste​
Lisa [10]

Answer:

The following are some ways of safely disposing of non-biodegradable waste.

1. Take them to a local recycling facility. Separate metal, plastic, glass, and other non-biodegradable waste and store them ready for recycling.

2. Combustion and energy recovery.

3. Disposal at sanitary facilities.

4. Reduce.

5. Landfills.

Explanation: Hope it helps! ^_^"

(G00gle)

7 0
3 years ago
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