Determine the mass in grams of 2.25 × 10²¹ atoms of copper.

Explanati  la materia el convino

es carbón ya irogno

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Each element is defined by its number of protons.

Answer:

weight = Mass × gravity

P= m × g

P=mg

Weight (P) = ? , Mass (m) = 2 kg , gravity (g) = 9.8 m/s²

P= mg

p = 2 × 9.8

P= 19.6 kg.m/s²

P= 19.6 N

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Answer:C

Explanation:

Answer:

202.76 inches

Explanation:

1 meter = 39.37 inches

5.15 × 39.37 = 202.7559,when rounded it's 202.76

Answer:

A= 15 atoms B= 3

Explanation:

5 x 2 + 5 x 1

3 + 2 x 1

Answer:

Basic oxides are oxides that show basic properties in opposition to acidic oxides and that either react with water to form a base; or react with an acid to form a salt and water which are called neutralization reactions.

Explanation:

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Explanation:

A basic oxide is an oxide that shows basic properties in opposition to acidic oxides and that either ⁕reacts with water to form a base; or ⁕reacts with an acid to form a salt.

Answer:

Chemical bonds hold molecules together and create temporary connections that are essential to life. Types of chemical bonds including covalent, ionic,

Explanation:

Ionic bond will form by transferring the electrons , covalent bond formed by sharing the electrons while hydrogen bond will be formed by bond between electronegative atom and hydrogen molecule.

The chemical bond is formed when electrons are transferred from one atom to another. An ionic bond is the name for this type of relationship. Their melting and boiling points are quite high. Ionic chemicals, in other words, seem to be non-volatile.

When one non-metal reacts with just another non-metal, electrons are shared across their atoms, resulting in the development of a covalent bond. Among two or more atoms with same non-metal, a covalent connection can be established.

Hydrogen bonding is just a sort of dipole-dipole attraction that occurs between molecules rather than a covalently link with a hydrogen atom.

To know more about hydrogen bond , covalent bond and ionic bond,

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Answer:

Delta. Aldehyde

Explanation:

Answer:

There are various substances found in nature, which are classified as an element, compound, and mixtures. Elements are pure substances, which are found in the simplest form, compounds are formed by the combining of two or more atoms of the same or different elements. Mixtures are categorized into homogenous and heterogenous, which are based on the composition of the mixture.

Explanation:

The homogenous mixtures are defined as the mixtures in which substances or components are evenly distributed and cannot be distinguished by each other. For example, detergent, air, and water. Alloys are also considered homogenous mixtures because the elements are mixed in some particular ratio. For instance, brass and steel are such types of homogenous alloys. In brass, the solid solution of copper and zinc are mixed in a specific ratio (2:1). However, the different instruments have different ratios of brass. The brass is classified as a homogenous mixture. In contrast, heterogeneous mixtures are those in which the composition of substances is not uniform. For example, oil and water.

Answer:

skip it please, ok...? thank you

The mass of 125 mL of bromine and the volume occupied by 85 g of bromine are:  

Density is simply defined as the mass of an object per unit volume of the object. It can be expressed mathematically as

[tex]Density = \frac{mass}{volume }[/tex]

Density = 3.12 g/mL

Volume = 125 mL

[tex]Density = \frac{mass}{volume} \\\\3.12 = \frac{mass}{125}[/tex]

Cross multiply

Mass = 3.12 × 125

Therefore, the mass of bromine is 390 g

Density = 3.12 g/mL

Mass = 85 g

[tex]Density = \frac{mass}{volume } \\\\3.12 = \frac{85}{volume }[/tex]

Cross multiply

3.12 × Volume = 85

Divide both side by 3.12

[tex]Volume = \frac{85}{3.12}\\\\[/tex]

Therefore, the Volume of bromine is 27.24 mL

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Hey there! Here is the answer:

B.) decrease; increase

Here's why:

As you move from left to right across a period on the periodic table the size of an atom will decrease. As you move from top to bottom down a group on the periodic table the size of an atom will increase.

I really hope this answer helps you out! :)

Answer:

hydrocarbons contain both Hydrogen and Carbon while organic compounds

are compounds in which  one or more atoms of Carbon are  covalently linked

with  other elements

Explanation:

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Total distance=60m+40m=100m

Total Time=6+4=10s

#a

[tex]\boxed{\sf Speed=\dfrac{Distance}{Time}}[/tex]

[tex]\\ \sf\longmapsto Speed=\dfrac{100}{10}[/tex]

[tex]\\ \sf\longmapsto 10m/s[/tex]

#b

Displacement=AC=60m

[tex]\\ \sf\longmapsto Velocity=\dfrac{Displacement}{Time}[/tex]

[tex]\\ \sf\longmapsto Velocity=\dfrac{60}{10}[/tex]

[tex]\\ \sf\longmapsto 6m/s[/tex]

#C

Distance=60m

time=5s

[tex]\\ \sf\longmapsto Velocity=\dfrac{60}{5}=12m/s[/tex]

#d

The velocity of A to C is greater than Velocity from C to A

Answer:

11. A

12. B

13. D

14. E

15. C

Answer:

5.029 × 100

Explanation:

Answer:

1)Mixture is the combination of substance

2)There are two types of mixture such as heterogeneous mixture and homogeneous mixture

3)foreg=Salt solution ,sedimentation

Pure substance

1)Pure substances are also called elements

2)They are made up of small atoms

3)for eg= oxygen,Venadium ,Iron,Oxygen

Answer:

C).Iron

Explanation:

Iron has a binding energy of 8.8MeV

Answer:

It is a simple and clear account of the development of the codpuscular or, as sortie prefer to call it, the electronic, theory, of matter to explain the passage of electricity through metals and gases.

Explanation:

THE present volume is an expansion of six lectures delivered by; Prof. J. J. Thomson in his capacity of professor at: the Royal Institution. It is a simple and clear account of the development of the corpuscular, or, as sortie prefer to call it, the electronic, theory, of matter to explain the passage of electricity through metals and gases. The last two chapters are devoted to consideration of the properties of model atoms built up of corpuscles, and the evidence in favour of the view that the number of the corpuscles in an atom is about the same as its atomic weight in terms of hydrogen.

Answer:

yes

Explanation:

Answer: 60.2g

Explanation:

One mole acetic acid weighs 60.2g

Answer:

right answer is option no c

Answer:

2.4* 10⁴ m

Explanation:

1km = 1000m = 10³m

(1*24)km = 10³ * 24 m

=> 24km = 2.4 * 10⁴m

Hello! here is a paragraph you can use, that I type up to explain, make sure to not copy word for word of what I said. :)

What I use to wash up is soap. Soap has a certain ph level and includes acids and alkaline that enables water to mix and create soap foam to clean.  Soap can come in many shapes and sizes, and can be either liquid, solid, or even foamy. I think soap works because when you use friction between your wet hands and the soap bar, you are rubbing the substances of the soap that clean your hands to clean your hands. I think the friction of the rubbing creates a layer of soap that can be used to clean, and when you increase friction the more change of the soap.

Have a great day,

I hope this helps!