Use this diagram to answer the following
questions.
a
7 Identify Is this an atom or a molecule?
Explain your reasoning.

THIS IS ACTUALLY SCIENCE NOT CHEMISTRY

Answer:

Voltage is the pressure from an electrical circuit's power source that pushes charged electrons (current) through a conducting loop, enabling them to do work such as illuminating a light.

Explanation:

I hope this is right i found it off a website called fluke!

Answer:

Explanation:

For 4 all you have to do is take the -log(H3O+) and then use your PH values to identify if it's acidic or basic

a. 2.06 - acidic

b. 8.4 - basic

c. 6.67 - acidic

d. 5.85 - acidic

Answer: D

Explanation:

Answer:

7.6125

Explanation:

multiply 7.5 with 1015

yll got 76125 divide it by 1000 to get answer in grams

The mass in grams of 7.5 × 10¹⁵ molecules of ammonia is 21.08 × 10⁻⁸ g.

Mass of any substance from moles will be calculatd as:

n = W/M , where

W = required mass

M = molar mass

We know that in 1 mole of any substance 6.022 × 10²³ particles of that sybstance are present.

No. of moles in 7.5 × 10¹⁵ = 7.5 × 10¹⁵molecules / 6.022 × 10²³ molecules per mole

No. of moles in 7.5 × 10¹⁵ = 1.24 × 10⁻⁸ moles

Molar mass of ammonia = 17 g/mol

Now we put the requred values on the first equation to get the mass as:

W = (1.24 × 10⁻⁸mol)(17 g/mol)

W = 21.08 × 10⁻⁸ g

Hence required mass of ammonia is 21.08 × 10⁻⁸ g.

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Answer:

atomic #8

atomic mass 15.999U

# protons 8

# neutrons 8

# protons 8

The given element nitrogen have 7 electrons and 7 protons. Mass number is the sum of number of protons and neutron. The number of neutrons is 7. Thus mass number of the isotope is  14.

Nitrogen is 7th element in periodic table. It is an electronegative element and is included in p block. Nitrogen exists as gas but sometime it can be liquified under high pressure.

Isotopes are atoms with same atomic number and different mass number. Nitrogen have two isotopes. N-14 and N-15. Mass number is the sum of number of protons and neutrons.

Even though isotopes are different in mass number their chemical properties will be similar but there exists slight changes in their physical properties.

Here, we have 7 protons and 7 electrons therefore, the mass number 14.Thus the isotope given in the diagram is N-14.

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Answer:

Explanation: In a chemical formula, the symbols for each element in the compound are followed by subscripts that tell us how many of that element are in the compound. The subscripts that follow each element's symbol indicate how many of that element are in the compound. Notice how H is located in more than one place.

Explanation:

Answer:

False

Explanation:

Water molecules are spread up but slightly, enough that none of the molecules actually move freely around each other. Only gas and plasma molecules are very spread apart.

Answer: Water inside the seed coat creating a pushing force, breaking the seed coat.

Explanation:

Seed germination can be defined as the process by which a new plant emerge out from a seed. The radicle is the first emerging part from a seed and it develops into a root and the plumule is the second emerging part and it develops into a shoot. The light, water, adequate temperature, and soil are the factors that are necessary for seed germination.

According to a given situation, the popcorn kernel will receive the moisture necessary for the germination process, the water will imbibe into the seed coat creating pressure inside the seed and which will cause the seed coat to break and the new plant parts or seedling will emerge out of the seed coat.

Answer:

1. water will freeze at a temperature below 32 degrees fahrenheit 0 degree celsius.

2. Ice will melt at a temperature above 32 degrees fahrenheit 0 degrees celsius.

3. water boils at 212 degrees fahrenheit or 100 degrees celsius.

Answer:

shorter wavelength = alpha wave

Explanation:

Given that,

The alpha wave has a frequency of 5 Hz and the beta wave has a frequency of 2 Hz.

We need to compare the wavelengths of these two waves.

For alpha wave,

[tex]\lambda_1=\dfrac{c}{f_1}\\\\\lambda_1=\dfrac{3\times 10^8}{5}\\\\=6\times 10^7\ m[/tex]

For beta wave,

[tex]\lambda_2=\dfrac{c}{f_2}\\\\\lambda_2=\dfrac{3\times 10^8}{2}\\\\=15\times 10^7\ m[/tex]

From the above calculations, we find that the wavelength of the alpha wave is shorter than the wavelength of the beta wave.

Answer: False

Explanation: The moon travels at 1.42 mph around the Earth.

Answer:

false

Explanation:

Answer:

if you mean question 21

true

Explanation:

sorry if wrong

Answer:

C. The fruit and the hamburgers were affected by an increase in heat energy.

Explanation:

One claim Harvey can use to support the examples from his experiment is that the hamburgers and fruits were affected by an increase in the heat energy.

Answer:

btw it's not c

Explanation:

a fruit rotting or infected is a chemical reaction therefore,its close to d

Answer:

15 sec

Explanation:

Answer:

Blending is done to break open, or lyse, the cells.

DNA resides in the nucleus, which is enclosed by the nuclear membrane. The nucleus is further enclosed by the cell membrane. So, to get the DNA, we need to break open both the membranes. Cell membranes are made up of lipids and proteins. The detergent molecules to attach to the cell and nuclear membranes, causing them to break open.

Meat tenderizer contains the enzyme protease that helps cleave proteins. Even after breaking open the nucleus and cell membrane, the DNA is still protected by cell proteins. Meat tenderizer cleaves the proteins, leaving behind only the DNA molecule.

DNA is insoluble in alcohol and hence, when alcohol is added, it precipitates out the DNA.

Explanation:

PLATO Answer

Answer:

3. Texture.

Explanation:

Igneous rocks texture refers to the size of minerals in the rock, which is assessed by how visible they are to the naked eye.

Answer:

3.5ML

Explanation:

At the constant pressure, the final volume of the carbon dioxide gas was equal to 4.62 ml at a temperature of 0ºC.

Charles's law can be explained as when the pressure of the gas is kept constant, the volume of gas is directly proportional to the temperature of a gas.

The volume of the gas and the temperature of the gas have a direct relationship according to this law.

Therefore, V∝ T

or    V₁/T₁ = V₂/T₂                                               ....................(1)

Given, the initial temperature of the CO₂ gas, T₁ = 22 ºC

T₁ = 22 + 273 = 295 K

The final temperature of the CO₂ gas, T₂ = 0ºC

T₂ = 0 + 273 = 273 K

The initial volume of the gas, V₁ = 5 ml

Substitute the value of V₁, T₁, and T₂ in equation (1 ) to get final volume of CO₂ gas:

5/295 = V₂/273

V₂ = 4.6 ml

Therefore, the final volume of the gas is equal to 4.6 ml at 0 ºC, when there is no change in the pressure.

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Answer:

b

Explanation:

The atomic number tells us all of the following except B. The order in which the elements were discovered.

The atomic number is the number of protons in the nucleus of an atom. The number of protons outline the identity of detail (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).

The atomic variety helps human beings discover factors in step with the variety of protons one atom of the element has. It essentially defines the element. while having a neutral rate, it also offers the variety of electrons the detail has (in one atom). while isotopes are a component, it would not completely exchange the atom.

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Answer:An alcoholic drink is a drink that contains ethanol, a type of alcohol produced by fermentation of grains, fruits, or other sources of sugar. The consumption of alcohol plays an important social role in many cultures. Most countries have laws regulating the production, sale, and consumption of alcoholic beverages.

Explanation: vodka the preferred alcoholic beverage of choice among alcoholics? #3 Doesn't make you feel bloated or full like beer does. It goes down quickly and smooth. #4 Gets you drunk just as fast as any other hard liquor can, and obviously much faster than beer or wine.

Answer:

Explanation:

independent-longer wire

dependent-bulbs being brighter

constants-lamp brand and so on

Answer:6.02

Explanation:

Answer:

there are about 6 atoms in hydrogen

Answer:

D. Science i think

Explanation:

Answer:

D. A process that breaks down large rocks into smaller pieces.

Explanation:

Physical weathering if referred to the process of rocks breaking apart without changing their chemical composition. If you look at the other answers, none of them match the description of physical weathering.

Answer:

A process that breaks down large rocks into smaller pieces.

Answer:

2.00 L of a gas is collected at 25.0°C and 745.0 mmHg. What is the volume at STP? STP is a common abbreviation for "standard temperature and pressure." You have to recognize that five values are given in the problem and the sixth is an x. Also ... 273 1. A gas has a volume of 800.0 mL at minus 23.00 °C and 300.0 torr.

Explanation:

Answer:

A; radiation

Explanation:

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