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mestny [16]
3 years ago
5

WHO WAS Tannatt William Edgeworth David

Chemistry
1 answer:
Usimov [2.4K]3 years ago
4 0
<span> a </span>Welsh Australian<span> geologist and </span>Antarctic explorer<span>. A household name in his lifetime, David's most significant achievements were discovering the major </span>Hunter Valley<span> coalfield in </span>New South Wales<span> and leading the first expedition to reach the </span>South Magnetic Pole<span>. He also served with distinction in World War I.</span>
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Closer=Burn
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We are the perfect distance away from the sun for it to sustain life.
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3 years ago
What are the charges of families 1, 2, &amp; 13 (boron family) if/when they become Ions
Natalka [10]

Answer:

Explanation:

Group one elements are alkali metals. All alkali metal have one valance electron. They loses their one valance electron and from cation with charge of +1.

Charges on group one.

Hydrogen = +1

Lithium = +1

Sodium = +1

Potassium = +1

Rubidium = +1

Cesium = +1

Francium = +1

Group two elements are alkaline earth metals. All alkaline earth metal have two valance electron. They loses their two valance electron and from cation with charge of +2.

Charges on group two.

Beryllium = +2

Magnesium = +2

Calcium = +2

Strontium = +2

Barium= +2

Radium = +2

Group 13 elements are boron family. All elements have three valance electrons. They loses their three valance electron and from cation with charge of +3.

Charges on group 13.

Boron = +3

Aluminium = +3

Gallium = +3

Indium = +3

Thallium= +3

Group 13 elements are also shows +1 charge by losing one valance electron.

8 0
3 years ago
Identify the types of information that are necessary to communicate with emergency responders. Select one or more: Any chemicals
oksano4ka [1.4K]

Answer:

How the incident happened

Any chemicals involved in an incident

Any other hazards present in the lab

Explanation:

Above are the types of information that are necessary to communicate with emergency responders. The emergency responders ask the first question that how the incident happened. After that they ask that is there any harmful chemicals are present in the laboratory or what types of chemicals present in the laboratory. These questions were asked by the emergency responders in order to give the patient a suitable treatment.

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3 years ago
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Answer:

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Explanation:

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3 years ago
How do you solve the level of a liquid in a graduated cylinder
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Look at the graduated cylinder at eye level, find the meniscus, whatever the meniscus is at is your answer.
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3 years ago
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