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Bezzdna [24]
3 years ago
15

Cells, chromosomes, Body system, DNA (smallest to largest)

Chemistry
1 answer:
ValentinkaMS [17]3 years ago
8 0

Explanation:

cells, dna, chromosomes, body systems

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Find the place of the digit 1 in the number 81389398.
dlinn [17]

Answer:

millions

Explanation:

the 1 is seven decimbal places to the left (seven places left of zero), which is the millions place

5 0
3 years ago
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If the mass of a material is 106 grams and the volume of the material is 23 cm3, what would the density of the material be? g/cm
den301095 [7]
Density is mass over volume
Density = 106g/23cm³ = 4.6g/cm³
7 0
3 years ago
What mass of oxygen is needed to burn 4g of hydrogen, given the equation below
aleksandrvk [35]

32g of oxygen is required to burn 4g of hydrogen.

Define molecular mass.

A specific molecule's mass is expressed in daltons and is known as the molecular mass (m) (Da or u). Due to the varying isotopes of an element that they contain, multiple molecules of the same substance can have distinct molecular weights.

The total atomic mass of every atom in a molecule, calculated using a scale with hydrogen, carbon, nitrogen, and oxygen having atomic masses of 1, 12, 14, and 16, respectively. For instance, water has a molecular mass of 18 (2 + 16), which consists of two hydrogen atoms and one oxygen atom. known also as molecular weight.

In ,2H2+O2-----> 2H2O

H 2 molecules have a mass of 2 g/mol.

The molecular weight of oxygen is 32 g/mol.

When the chemical equation is balanced,

To totally react, 32 g of oxygen are needed for every 22=4 g of hydrogen.

To know more about molecular mass use link below:

brainly.com/question/21334167

#SPJ1

7 0
1 year ago
A group of things or part that form a whole
Reptile [31]

Answer : The correct answer is " System ".

A group of things or part that form a whole is known as system .

Or System can be defined as a interacting or interdependent group of items that is forming a unified whole . For example : Gravitational system , thermodynamic system . These both systems have interacting bodies which influenced by some force .

Or it can be said : A group of parts that are combined to form whole which works a complete unit . For example : computers , telephones etc .

7 0
4 years ago
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What do strong and weak acids have in common?
Natali5045456 [20]

Answer:

All the above

Explanation:

A. Electrical current conduction

Aqueous solutions of both strong and weak acids will conduct an electric current. Weak acids are poorer conductors because they produce fewer ions.

B. Reaction with magnesium

Both strong and weak acids will react with magnesium, although weak acids will react more slowly.

C. pH paper test

Both strong and weak acids will give a colour with pH test paper, although the colours will probably be different.

D. Litmus paper test

Both strong and weak acids will turn blue litmus red.

4 0
4 years ago
Read 2 more answers
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