need help 1-5 test please quick

Answer:

If you are going at 120km per hour then, you should be able to go 360km in 3 hours.

Explanation:

Okay so, just multiply 120x3 and you get 360

also, Dividing 120/60 (How many mins are in a hour) You get 2Kilometers per min

Hope this helps!

Answer:

Metallic character decreases as you move across a period in the periodic table from left to right. This occurs as atoms more readily accept electrons to fill a valence shell than lose them to remove the unfilled shell. Metallic character increases as you move down an element group in the periodic table. This is because electrons become easier to lose as the atomic radius increases, where there is less attraction between the nucleus and the valence electrons because of the increased distance between them.

Answer: I said god bless him

Explanation:

Answer:

D.The space between the water particles becomes much larger.

Explanation:

Answer:

the space between the water particles become much larger

Answer:

The two chlorine atoms are said to be joined by a covalent bond.

Explanation:

The reason that the two chlorine atoms stick together is that the shared pair of electrons is attracted to the nucleus of both chlorine atoms. Hydrogen atoms only need two electrons in their outer level to reach the noble gas structure of helium.

Two chlorine atoms are are said to be stably bonded together as the two atoms require 1 valence electron each to complete their octet which is achieved by formation of covalent bond.

Covalent bond is defined as a type of bond which is formed by the mutual sharing of electrons to form electron pairs between the two atoms.These electron pairs are called as bonding pairs or shared pair of electrons.

Due to the sharing of valence electrons , the atoms are able to achieve a stable electronic configuration . Covalent bonding involves many types of interactions like σ bonding,π bonding ,metal-to-metal bonding ,etc.

Sigma bonds are the strongest covalent bonds while the pi bonds are weaker covalent bonds .Covalent bonds are affected by electronegativities of the atoms present in the molecules.Compounds having covalent bonds have lower melting points as compared to those with ionic bonds.

Learn more about covalent bond,here:

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Answer:

Explanation:

The density of a substance can be found by using the formula

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

From the question

mass = 216 g

volume = 24 cm³

The density is

[tex]density = \frac{216}{24} \\ [/tex]

We have the final answer as

Hope this helps you

Energy, potential energy, is stored in the covalent bonds holding atoms together in the form of molecules. This is often called chemical energy. Except at absolute zero (the coldest temperature it is possible to reach), all molecules move.

Answer:

Chemical energy

Explanation:

Energy, potential energy, is stored in covalent bonds holding atoms together in the form of molecules

Answer:

A. Solution, Colloid, Suspension

Hope i could help

Answer:

its A

Explanation:

got it right on edge, i hope this helps

Answer:

C, it is a limited resource.

Explanation:

where is the diagram?

without the diagram i can't help

Answer:

1. Aorta

2. Right ventricle

3. Right ventricle

4. Right ventricle

5. Left ventricle

Explanation:

i believe these are correct because i got the same answers on my test

Answer:

x = 1, -7.5

Explanation:

2x² + 13x = 15

Divide the left side of the equation by 2

2(x² + 6.5x) = 15

Divide 6.5 by 2 and square the quotient

6.5/2 = 3.25

3.25² = 10.5625

Add 10.5625 to the left side

2(x² + 6.5x + 10.5625) = 15

Since you have a 2 outside the parentheses, you will be adding 10.5625•2 to the right side.

10.5625 • 2 = 21.125

2(x² + 6.5x + 10.5625) = 36.125

To factor (x² + 6.5x + 10.5625), add b/2 to x

b/2 = 6.5/2 = 3.25

2(x + 3.25)² = 36.125

Divide by 2

(x + 3.25)² = 18.0625

Square root.

(x + 3.25) = √18.0625

x + 3.25 = ±4.25

Subtract 3.25.

x = 4.25 - 3.25 = 1

x = -4.25 - 3.25 = -7.5

x = 1, -7.5

Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question we have

mass = 7.9 × 10

We have the final answer as

Hope this helps you

Answer:

2:a-heterogenous

b-homogenous

c-heterogenous

d-heterogenous with water

3:Filtration is used to separate insoluble particles from a solution

Distillation is used to separate liquids with close but different boiling points e.g water and ethanol

Explanation:

2: homogenous mixtures form a uniform layer meaning that a mixture containing more than one layer is heterogenous

What does the green frog shown below look like?

Answer:

covalent bond

Explanation:

A carbon–oxygen bond is a polar covalent bond between carbon and oxygen. Oxygen has 6 valence electrons and prefers to either share two electrons in bonding with carbon, leaving the 4 nonbonding electrons in 2 lone pairs :O: or to share two pairs of electrons to form the carbonyl functional group.

Answer:

B. Color

Explanation:

We can estimate the temperature of a star by looking at the color of the star.

Red stars are the least hot among stars and Blue stars are the hottest.

Answer:

No

Explanation:

No, Ana's prediction of sorting out : mixture 1 'marble salt' with by her fingers, ie handpicking is not right.

Marble & salt particles mixture can't be sorted by handpicking. They can be seperated by the method of sieving rather, as marble particles being bigger stay in the sieve & salt particles being smaller (finer) pass through it.

Answer:observation

Explanation:

this is the answer because they saw it they know it is there. the flowers are pink and they saw that that’s what an observation is so the answer is an OBSERVATION

Answer:

Decay. Plutonium-242 primarily decays into uranium-238 via alpha decay, before continuing along the uranium series.

Explanation:

please mark as brainlist

Answer:

Yes

Explanation:

Because they both react with something

Answer:

Al3+ indicates an ion of aluminum having a charge of + 3. I.e., since an aluminum atom normally has 13 protons and 13 electrons, this ion has 10 electrons (-10 charge) and 13 protons (+ 13 charge) giving it a charge of + 3 (-10 + 13 = +3).

Explanation:

Al3+ indicates an ion of aluminum having a charge of + 3. I.e., since an aluminum atom normally has 13 protons and 13 electrons, this ion has 10 electrons (-10 charge) and 13 protons (+ 13 charge) giving it a charge of + 3 (-10 + 13 = +3). Hopefully this helps you

Answer:

Explanation:

There really are no atoms. Some are ions. However at your level, I think you are expected to answer something connected to 6.02 * 10^23

First Find the mass of one mole

Na: 2 * 23 = 46

S:    1 * 32 = 32

O:   4* 16  = 64

Total          142

Next Find the number of Moles

1 mole has a mass of 142

x mole have a mass of 180

Cross Multiply

142 * x = 180  * 1

x = 180 / 142

x = 1. 27 moles.

Next figure out the number of atoms in 1.27 moles of Na2SO4

Na: 2 * 1.27 * 6.02 * 10^23 = 1.53 * 10^24

S : 1  * 1.27 * 6.02 * 10^23 =  7.6 * 10^23

O: 4 * 1.27 * 6.02 * 10^23  =3.05 * 10^24

Total                                      5.34*10^24

Answer:

silicon (Si)

Explanation:

Sulfur is known to have to smallest amount of radius, therefore silicon has the largest ionization energy.

Answer:

the answer is this is an example of convection

Answer:

1. Reproduction: One or two parents, organisms make new offspring

2. Offspring: A new living organism

3. Gamete: female and male create mini-me by cell division

4. Budding: Hydra

5. Binary fission: Bacteria

6. Zygote: The original cell after egg cell and sperm cell join

7. Fragmentation/Regeneration: Sea star / Planarian

8. Mitosis: Healling and growth occurs in budding

9. Meiosis: Egg or sperm cell/ specialized cells

Explanation:

1. Reproduction is the process by which organisms make new offspring either sexually (involving two parents) or asexually (involving one parent only).

2. An Offspring is a new living organism

3. A gamete is a mature sexual reproductive cell, as a sperm or egg, that unites with another cell to form a new organism. It formed from female and male parents by cell division known as meiosis

4. Budding is a form of asexual reproduction in which a new offspring grows out from a part of the parent. It occurs in Hydra.

5. Biinary fission is a form of asexual reproduction which involves a separation of the parent into two new offspring. It commonly occurs in Bacteria

6. Zygote is the original cell formed after egg cell and sperm cell fuse.

7. Fragmentation/Regeneration: this is a form of reproduction in which a parent splits into fragments which are then able to develop into new organisms. It occurs in Sea star and Planarians

8. Mitosis is a form of cell division which a cell divides into two identical daughter cells with the same genetic components as the parent cell. It functions in healing and growth as well as in budding

9. Meiosis is a type of cell division that results in the production of sex cells or gametes. The number of chromosomes in the parent cell is halved and four gamete cells are produced. Egg or sperm cell/ specialized cells are produced by meiosis.

Answer:

Explanation:

The percentage error of a certain measurement can be found by using the formula

[tex]P(\%) = \frac{error}{actual \: \: number} \times 100\% \\ [/tex]

From the question

actual volume = 198.2 mL

error = 200 - 198.2 = 1.8

So we have

[tex]P(\%) = \frac{1.8}{198.2} \times 100 \\ = 0.90817356205...[/tex]

We have the final answer as

Hope this helps you