#7- pls help me ill mark you brainliest and ill give you 5 stars <3

Answer:

0 C

Explanation:

If the normal melting point of a substance is below room temperature, the substance is a liquid at room temperature.

If both the normal melting point and the normal boiling point are above room temperature, the substance is a solid.

Answer:

[tex]ns^2[/tex]

Explanation:

Answer:

particle distance

solids are tightly packed

liquids are a little farther apart

and gases are very far

Answer:

The statement is true

I found this doing research.

Apparantly, each sub level is made up of one or more orbitals and the orbitals in each sub level are always odd number. Each orbital can only have two electrons and those two electrons will have opposite spin.

Explanation:

Answer:

True

Explanation:

Answer:

awsdxcvawsd

Explanation:

Answer:If you change the number of neutrons in an atom, you get an isotope of the same element. The addition of a neutron can make an atom radioactive. When you change the number of protons in an atom, you will change the atom from one element to a different element.

Explanation:

Answer:

all

of them

Explanation:

Answer:

a) 6.17 g of solid KOH

b) 88.0 mL of a 1.25 M potassium hydroxide solution​

Explanation:

a) We have to determine the mass of solid potassium hydroxide that has to be weighed to prepare 220 mL of a 0.500 M potassium hydroxide solution. We will also require the molar mass of potassium hydroxide, KOH, 56.11 g/mol.

0.220 L × (0.500 mol/L) × (56.11 g/mol) = 6.17 g

b) We will use the dilution rule to determine the volume of the 1.25 M potassium hydroxide solution​ to be measured.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂ / C₁

V₁ = 0.500 M × 220 mL / 1.25 M = 88.0 mL

Answer:

the answer is b

Explanation:

i just did quizz

Answer:

Hi

Explanation:

How has your brainly experience been so far? Are you liking?

Answer:

Thx you are sooo noice

Explanation:

UwU U3U

Answer:

Master-at-Arms Petty Officer 2nd Class. MA2. Machine Accountant Second Class (Naval Rating) Copyright 1988-2018 AcronymFinder.com, All rights reserved.

Explanation:

Answer:

a 1   doesn't belong

Explanation:

Gas has fast moving molecules.

Liquids have slow moving molecules.

Solids have vibrating molecules.

Answer:

...

Explanation:

Answer: the type of apple because it is an example of a constant

Explanation:

Answer:

Electrons

Explanation:

Atoms can combine together and share electrons between them. Atoms that share electrons are linked to each other in a form, called a molecule that is in a lower energy state than either of the separate atoms alone.

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Answer:500

Explanation:

Answer:

Heat required to melt 42 g if ice is 13,860 J

Explanation:

The amount of heat required to melt  grams of water at 0°C is given as follows;

The mass of the ice (water), m = 42 g

The latent heat of fusion of ice Δ[tex]H_f[/tex]= 330 J/g

Therefore, heat required to melt 42 grams is given as follows;

Heat required to melt ice = Mass of the ice, m × The specific latent heat of fusion of the ice, Δ[tex]H_f[/tex]

Heat required to melt 42 g if ice = m × Δ[tex]H_f[/tex] = 42 g × 330 J/g = 13,860 J

Heat required to melt 42 g if ice = 13,860 J.

Answer:

It has shells of protons and neutrons.

Explanation:

The nuclear structure of an atom is similar to the non-nuclear structure because has shells of protons and neutrons.

An atom consists of a central nucleus that is usually surrounded by one or more electrons.

The total number of neutrons plus protons in the same both before and after the nuclear process, although the total number of protons and the total number of neutrons may be different before and after.

Hence, the nuclear structure of an atom is similar to the non-nuclear structure because has shells of protons and neutrons.

Learn more about the atoms here:

https://brainly.com/question/1566330

#SPJ2

Answer:

Many atoms consist of a positively charged nucleus composed of protons and neutrons surrounded by a negatively charged cloud of electrons. At its most basic level, an atom is any particle of matter that contains at least one proton. ... Here are some examples of atoms: Neon (Ne) Hydrogen (H)

Explanation:

Answer:

I've already answered this one for you. Anyway, please let me know if you have any more questions or need help!

Answer:

c)estriado liso, estriado esqueletico, estriado cardíac

Explanation:

Los 3 tipos de tejido muscular filho cardíaco, liso y esquelético.

O músculo esquelético é responsável pelo movimento dos tons e das outras estruturas. La contracción del músculo cardíaco permite que o corazón bombee sangre. Los músculos lisos permitem que os alimentos se muevan a través del tracto digestivo y también ayudan al cuerpo a absorvedor los nutrientes.

Answer:

Color. I thinkkk.

Phyiscal properties are defined as properties that can be measured or observed without changing the chemical nature of the substance.

Some examples of phsyical properties are:

- Color

- Density

- Volume

- Mass

- Boiling or Melting Points

Answer:

The solution will fit into the container.

Explanation:

The following data were obtained from the question'

Volume of solution = 170 L

Length of container (L) = 2.5 ft

Height of container (H) = 60 cm

Width of container (W) = 0.8 m

Volume of container (V) =?

Next, we shall express the length, height and breadth I the same unit of measurement. In this case, we shall all in centimetres (cm).

For the length:

1 ft = 30.48 cm

Therefore,

2.5 ft = 2.5 ft × 30.48 cm / 1 ft

2.5 ft = 76.2 cm

Thus the length is 76.2 cm

For the width:

1 m = 100 cm

Therefore,

0.8 m = 0.8 m × 100 cm / 1 m

0.8 m = 80 cm

Thus, the width of the container is 80 cm.

Next, we shall determine the volume of the container as follow:

ength of container (L) = 76. 2 cm

Height of container (H) = 60 cm

Width of container (W) = 80 cm

Volume of container (V) =?

Volume = length × width × height

Volume = 76.2 × 80 × 60

Volume = 365760 cm³

Finally, we shall convert 365760 cm³ to litre (L). This can be obtained as follow:

1000 cm³ = 1 L

Therefore,

365760 cm³ = 365760 cm³ × 1 L/ 1000 cm³

365760 cm³ = 365.76 L

Therefore, the volume of the container is 365.76 L

Since the volume of the container (i.e 365.76 L) is bigger than the volume of the solution (i.e 170 L), therefore, the solution will fit into the container.

KE = 0

Energy is the ability to do work  

Energy because its motion is expressed as Kinetic energy (KE) which can be formulated as:  

[tex]\large{\boxed{\bold{KE=\frac{1}{2}mv^2}}}[/tex]

So for two objects that have the same speed, the greater the mass of the object, the greater the kinetic energy  

The stone in hand is in a motionless state (at rest) so that its velocity (v) = 0, so it has no kinetic energy

But this stone can have potential energy that is gained due to its height

Answer:

Insoluble substances remain the same when in water.

Explanation:

When a substance is regarded as insoluble, it means that the substance remains the same in water.

Soluble substances usually form one continuous phase with water when they are added to water (eg when salt is added to water).

However, when camphor is added to water, it does not form a single phase with water. It remains the same in the water and maintains a separate phase from the water. Hence camphor is an insoluble substance.

Answer:

The correct option is;

Determine the density of the object and compare the known density of pure Silver

Explanation:

The density of the object is found by finding the weight of the object, and then finding the volume (of water) the object displaces when it is immersed (in water)

The  density is then fond by dividing the weighed mass by the volume the object displaces when immersed

Compare the result of the measured density with that of pure silver. If the two have density, as well as other similar physical characteristics, then the object is likely to be pure silver.

Answer:

Gay-Lussac's law.

Explanation:

According to Gay-Lussac's pressure law, it states that the pressure of a given mass of gas is directly proportional to the absolute temperature of the gas, the assumption that the volume is kept constant.

Hence, the trucker's tires were blown up because they were under high pressure as he drove from New Jersey to California, as a result of this intense pressure the temperature of the air in the tires began to rise and it directly affected the pressure of the gas in the tires' tubes which also increased to a point that they ended up blowing out, obeying Gay-Lussac's law.

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

N = 7.14 × 10^35 molecules of O2

We have

[tex]n = \frac{7.14 \times {10}^{35} }{6.02 \times {10}^{23} } \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

line m is vertical line with an undefined slopel line correct answer is 6 8 10 12 x