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Contact [7]
3 years ago
8

Describe the basic characteristics of each group of elements on the periodic table

Chemistry
1 answer:
Fofino [41]3 years ago
8 0

Answer:

Characteristics of Group

Explanation:

The elements of a group show similar chemical properties but there is a gradual variation in the physical properties of the elements in a group.

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An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11. how many electrons does boron have? 11 15 5 2
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3 years ago
A liquid solvent is added to a flask containing an insoluble solid. the total volume of the solid and liquid together is 81.0 ml
aivan3 [116]

The mass of solid is 76.905 g.

Given that,

Total volume of solid and liquid = 81.0 mL

Mass of liquid = 40.5 g

Density of liquid = 0.865 g/mL

Density of solid = 2..25 g/mL

We need to calculate the volume of liquid

Using formula of density

Density = Mass/volume(V_{l} } )\\\\volume(V_{l} )=Mass/Density

Put the value into the formula

V_{l} = 40.5/0.865\\\\V_{l} = 46.82 mL

We need to calculate the volume of solid

Volume of solid = Total volume of solid and liquid- volume of liquid

V_{s} =81.0-46.82\\\\V_{s} =34.18  mL

We need to calculate the mass of solid

P_{s}=M_{s} /V_{s}  \\\\M_{s} =P_{s}V_{s}

Using formula of density

Put the value into the formula

M_{s}=2.25 X 34.18\\\\M_{s}=76.905 g

Hence, The mass of solid is 76.905 g.

<h2>What is density?</h2>

A substance's density (more accurately, its volumetric mass density; sometimes known as specific mass) is its mass per unit volume. The most common symbol for density is (the lower case Greek letter rho).

There are three types of Density:

  • linear density
  • bulk density
  • area density

Learn more about density :

<u><em>brainly.com/question/21461758?referrer=searchResults</em></u>

#SPJ4

7 0
2 years ago
Sources of chemical raw material s<br>​
irakobra [83]

Fossil fuels (coal, natural gas, and petroleum), air, water, salt, limestone, sulphur, and some specialty raw materials for special goods, like phosphates and the mineral fluorspar, are all examples of raw materials.

<h3>What is the primary raw material?</h3>

Sand (including silica sand), clay, hard rock, limestone (including metallurgical limestone), gravel, and other building and road-building supplies are considered basic raw materials (BRM). It also includes elements used to improve agricultural soil, such as limesand and gypsum.

<h3>How many different kinds of raw materials occur?</h3>

Direct and indirect raw materials can be separated into two categories. The finished product contains direct materials. Examples are the fabric used to produce clothing or the wood used to make furniture. Throughout the process, indirect materials are used.

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The complete question is -

What are the sources of chemical raw material ?

4 0
2 years ago
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