An atom of a certain element has 18 protons, 18 electrons, and a mass number
of 40. At room temperature this element is a very stable gas. How many
neutrons are in this atom?
Record your answer and fill in the bubbles on your answer document. Be sure
to use the correct place value.

Answers

Answer 1

Answer:

40-18 = 22

Explanation:

The mass number is the sum of the neutrons and protons.  You know you have 18 protons and a mass number of 40.


Related Questions

Food contains what that must be released to be used?

Answers

Answer: Nutrition

Explanation: Nutrients are the essential nourishments for growth and the maintenance of life.

Which events take place in the light-dependent reactions of photosynthesis?
ERRE
O Light energy is converted sugars; sugars are broken down for energy.
O Light energy is captured by plants, light energy is used to make sugar.
O Light energy is converted to chemical energy; chemical energy is used to make sugar.
O Light energy is captured by plants; light energy is converted to chemical energy.
W
Markthina

Answers

Answer:

d

Explanation:

the dispersal of ink in a beaker of water is an example of
a. endocytosis
b. diffusion
c. active transport
d. osmosis

Answers

The answer is diffusion.

Answer:

A

Explanation:

Diffusion is the answer:)))

Which statement best defines building blocks

Answers

Answer:

Building blocks are the basic units of a structure, they are what make up something. Atoms are building blocks of everything, atoms are the basic unit of matter and is the building blocks of physically everything.

Explanation:

Select the correct answer.
George owns a pet dog. One day, he notices that the dog has become very aggressive, and bites anyone who comes close. Which parameter of
health is most likely the cause of the dog's behavior?
OA general
OB.
historical
Oc. physical
OD. Psychological

Answers

Answer: D I believe

Answer:

psychological..............


What factors might cause a kelp forest to disappear?

Answers

Answer: Natural Causes and Human Activities

Explanation:

The factors influencing kelp forest stability are diverse: kelp harvesting; grazing by fishes, sea urchins, and crustaceans; plant competition; storms; sedimentation; and pollution; global warming and the association with rising ocean temperatures.

Answer:

does this help ?

Explanation:

a large patch of warm water developed off the coast, creating a catalyst that has further changed this underwater environment. The persistent warmer sea temperatures stress the kelp forests to the point that growth and reproduction have slowed dramatically and caused damage to remaining fronds and tissue.

5. A herd of zebras has 9 males and 62 females.
During a one-year period, 22 foals that are born
survive and 25 adults die. Six females join the
herd. Three males and 11 females leave the herd.
Has the herd reached its carrying capacity for this
ecosystem? How do you know?
O a. The herd has reached its carrying capacity
because the growth rate is negative.
Ob.The herd has reached its carrying
capacity because the growth rate
is positive.
O c. The herd has not reached its carrying capacity
because the growth rate is negative.
Od.The herd has not reached its carrying
capacity because the growth rate
is positive.

Answers

Answer:

Choice: (A) The herd has reached its carrying capacity because the growth rate is negative.

Explanation:

The herd has reached its carrying capacity because the growth rate is negative. Hence option a is correct.

What is ecosystem?

Ecosystem is defined as a ecology's structural and functional unit where living things interact with one another and their surroundings. Healthy ecosystems maintain our soil, clean our air, control the climate, recycle nutrients, and give us food. They provide tools and raw ingredients for producing medicines and other goods. Major elements of many ecosystems include plants, animals, insects, microorganisms, rocks, soil, water, and sunlight.

Clumps can disperse in a region when there is an unequal distribution of resources like food, water, moisture, temperature, or other materials. More food supplies are available, finding a mate requires less migration for individuals, and organisms are better protected from predators.

Thus, the herd has reached its carrying capacity because the growth rate is negative. Hence option a is correct.  

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In what ways are the ingredients in a cake like the gases in Earth’s atmosphere?

Answers

Answer:

because there are different types of gases and layers of the atmosphere on earth.

Explanation:

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background info: potato cells were added to different solutions of NaCl and it has to do something with Osmosis

Answers

Answer:

The water moving form inside the potato to the outside, making it lose mass.

Explanation:

I hope this is right.

Where would you find DNA in plant and animal cells?

Answers

Answer:

Some DNA is present within the mitochondria of animals, plants, and fungi and within the chloroplasts of plants.

Explanation:

A in Bio last year.

Answer:

The DNA is located in the Nucleus in both plant and animal cells

I need help please !!!

Answers

Answer:

i cant see

Explanation:

Just answer 6 and 7 please I just answer what u can

Answers

Answer:

They are not verbal-- something less in the impostance of getres tey more than it.

Explanation:

An essay is, generally, a piece of writing that gives the author's own argument — but the definition is vague, overlapping with those of a paper, an article, a pamphlet, and a short story. Essays have traditionally been sub-classified as formal and informal

Answer:

someone answered right when i was about to answer wow

Explanation:

In the atmosphere, 50% of the air lies below an altitude of

Answers

Answer:

it is 89.0000655

Explanation:

bn hn hhhbnhh h kjjhjn nh

In the atmosphere, 50% of the air lies below an altitude of 89.0000655.

What do you mean by altitude of atmosphere?

Exosphere. Located between about 700 and 10,000 kilometers (440 and 6,200 miles) above Earth's surface, the exosphere is the highest layer of Earth's atmosphere and, at its top, merges with the solar wind.

The commonly accepted end of earth's atmosphere falls within the thermosphere at 62 miles (100 kilometers) above the earth's surface. This commonly accepted boundary is called the Kármán Line.

The Stratosphere extends around 31 miles (50 km) down to anywhere from 4 to 12 miles (6 to 20 km) above the Earth's surface. This layer holds 19 percent of the atmosphere's gases but very little water vapor.

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True or False: Enzymes have an optimal or ideal pH level?

Answers

Answer:

All enzymes have an ideal pH value, which is called optimal pH. Under the optimum pH conditions, each enzyme showed the maximum activity. For example, the optimum pH of an enzyme that works in the acidic environment of the human stomach is lower than that of an enzyme that works in a neutral environment of human blood. All enzymes have an optimum pH that they work best at. Its often neutral pH 7, but not always.

Explanation:

i hope this is good?

Pilar just won a coveted award at work, even though many of her colleagues told her she didn't have a chance of getting it. While standing on the stage at the company's banquet dinner, she wanted to gloat and call out the people who didn't support her, but she knew this would not be appropriate. Instead, she stayed positive and smiled, thanked all of her colleagues, and graciously accepted the award. Pilar ended up conforming to this particular social setting's _____.

Answers

Answer:

Pilar ended up conforming to this particular social setting's negativity.

Explanation:

Pilar's co-workers do not show support for the causes in which she participates, on the contrary, they underestimate her and denigrate the capacities she has and the possibility of being rewarded for the hard work she intends to do. This does generate an environment full of negativity, which can harm everyone involved. The fact that Pilar, overcoming this environment, winning the prize and giving a sincere speech, regardless of what her colleagues said, shows that she got used to and adapted to a place with this type of negativity.

Salmonella typhi is a bacteria that reproduces by splitting into two
identical organisms. What type of asexual reproduction is this?
1Binary Fission
2O Vegetative Propagation
3Budding
4Fragmentation

Answers

Answer:

Binary fission

Explanation:

Binary fission is a type of asexual reproduction in bacteria in which two identical daughter cells arise from a new cell. It is asexual in the sense that it does not require two parents but only one.

According to this question, Salmonella typhi is a bacteria that reproduces by splitting into two identical organisms. This is evidently a type of BINARY FISSION reproduction by the bacteria cell.

Do molecules crossing a membrane using active transport go WITH or AGAINST the concentration gradient??​

Answers

Against

The concentration gradient is the probability of where ions will go freely to try and make the concentration the same in each part of the cell. When ions want to cross into the membrane, most of them will have to go against the concentration gradient and will use energy to do so!

Hope that helps :)

What is an active site?
A )a gland that secretes a particular enzyme
B) a part of an enzyme molecule into which a substrate molecules fits
C)a part of the substrate to which an enzyme molecule attaches
D)a place in the body where an enzyme works

Answers

Answer:

B is correct.

Explanation:

How does Interphase relate to the 4 stages of the Cell Cycle?

Answers

Answer:

Interphase is the first stage of Mitosis. This is the cell cycle. Interphase is when the DNA is replicated

Hoped this helped :)

Which property of water allows water to be conducted up to the leaves?

Answers

Answer:

Cohesive nature of water

Explanation:

Capillary action helps bring water up into the roots. With the help of adhesion and cohesion, water can work it's way all the way up to the branches and leaves.

Answer: B

Explanation:

A type of asexual reproduction in which a prokaryotic cell replicates its DNA and divides in half, producing two identical daughter cells, is called

binary fission
conjugation
mitosis
transduction

Answers

Answer: binary fission, form of sexual reproduction in which paramecia and some prokaryotes exchange genetic information. I THINK this is right!

Answer:

The answer is binary fission.

Explanation:

Binary fission, asexual reproduction by a separation of the body into two new bodies. In the process of binary fission, an organism duplicates its genetic material, or deoxyribonucleic acid (DNA), and then divides into two parts (cytokinesis), with each new organism receiving one copy of DNA.

Hope that helps you!!

Many birds live in mountainous temperate forest ecosystems. Above the tree line on mountains, however, the ecosystems change. Few birds are found there. Many factors contribute to the lower number of birds seen above a mountain’s tree line. Which of these factors is abiotic? _________________________________
(limited food, frequent high winds, high flying predators, no trees for shelter)

Answers

im pretty sure it’s no trees for shelter!

Building of dams and interstate highways are examples of


Human Environment Interaction


Location


Place


Region


Movement

Answers

Answer:

Human environment interaction

Explanation:

OK so thats the answer hope it helped ⇔ I really do

Which is denser, 50 mL of water or 500 mL of water?

Answers

Answer:

50mL

Explanation:

Density is inversely proportional to volume.

This implies that, for the same mass of water, the higher the volume, the less dense it is.

By comparison 500ml is greater than 50ml

Going by the above analysis, 50ml will be less dense than 500ml because it is smaller.

- Which of the following is NOT a molecule?
b. silver
a. water
c. carbon dioxide
d. sugar

it’s A

Answers

Answer:

sugar

Explanation:

sugar is a combination of different molecules

answer : d. sugar
explanation : it’s made up of many molecules

Need 11 facts about solar eclipse

Answers

1-The longest a total solar eclipse can last is 7.5 minutes.

2-The width of the path of totality is usually about 160 km across and can sweep across an area of Earth's surface about 10,000 miles long.

3-Almost identical eclipses occur after 18 years and 11 days.

4-This period of 223 synodic months is called a saros.

5-Each year there are between 2 and 5 solar eclipses.

6-The total solar eclipse, when the Moon completely obscures the Sun and leaves only the faint solar corona, is known as a Totality.

7-Total solar eclipses are rare, happening only once every 18 months.

8-Total solar eclipses produce harmful rays that can cause blindness.

9-If any planets are in the sky at the time of a total solar eclipse, they can be seen as points of light.

10-During a total solar eclipse, conditions in the path of totality can change quickly. Air temperatures drop and the immediate area becomes dark.

11- A solar eclipse can only occur when the Moon is close enough to the ecliptic plane during a new moon

Answer:

1-The longest a total solar eclipse can last is 7.5 minutes.

2-The width of the path of totality is usually about 160 km across and can sweep across an area of Earth's surface about 10,000 miles long.

3-Depending on the geometry of the Sun, Moon, and Earth, there can be between 2 and 5 solar eclipses each year.

4-A total solar eclipse can happen once every 1-2 years. This makes them very rare events.

5-Almost identical eclipses occur after 18 years and 11 days. This period of 223 synodic months is called a saros.

6-During a total solar eclipse, conditions in the path of totality can change quickly. Air temperatures drop and the immediate area becomes dark.

7-There is another type of solar eclipse, known as a hybrid eclipse, which shifts between a total and annular eclipse depending on where you view it from on Earth. These are comparatively rare.

8-The speed of the Moon as it moves across the Sun is approximately 2,250 km (1,398 miles) per hour.

9-If you are at the North or South Poles, you cannot view a total solar eclipse.

10-In ancient times, people thought an eclipse was a sign that the gods were angry or that bad things were about to happen.

11-During a total solar eclipse day time looks more like twilight.

Explanation:

Your welcome.

What are viroids?
short strands of circular RNA
short strands of circular DNA
long strands of DNA coiled into circles
small circles of proteins

Answers

The answer is "short strands of circular RNA"

Select the answer below that describes the process of photosynthesis

photosynthesis is when humans convert their food into energy
photosynthesis is when plants convert sunlight, water and carbon dioxide into energy
photosynthesis is when plants convert sunlight, water and oxygen into energy
photosynthesis is how plants grow

Answers

Photosynthesis is when plants convert sunlight, to water, and carbon dioxide into energy

Answer:

Photosynthesis is when plants convert sunlight, water, and oxygen into energy.

photosynthesis is how plants grow

Explanation:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities. This chemical energy is stored in carbohydrate molecules, such as sugars, which are synthesized from carbon dioxide and water – hence the name photosynthesis, In most cases, oxygen is also released as a waste product. Most plants, most algae, and cyanobacteria perform photosynthesis; such organisms are called photoautotrophs. Photosynthesis is largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere and supplies most of the energy necessary for life on Earth.

Hope this helps!

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Including Alaska and Hawaii, which additional biomes are found in the United States?

Answers

Answer:

Temperate grassland, desert, temperate woodland, and shrubland, northwestern coniferous forest and temperate forest.

Explanation:

Answer:Temperate grassland, desert, temperate woodland, and shrubland, northwestern coniferous forest and temperate forest.

Explanation:

List the three parts of the cell theory

Answers

Answer:

-  All organisms are composed of cells. -  Cells are alive and the basic living units of organization in all organisms. -  All cells come from other cells.

Explanation:

:)

The three parts of the cell theory are as follows:

All living things are made up of one or more cells.Cells are the basic and functional unit for living things.All cells come from pre-existing cells.

CELL THEORY:

The cell theory is a widely accepted theory that is made up of three components as proposed by Mathias Scleiden, Theodor Schwann and Rudolph Virchow in the 1890's.

The three parts that makes up the cell theory are as follows:

All living things are made up of one or more cells.Cells are the basic and functional unit for living things.All cells come from pre-existing cells

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5u = 56 -3u i dont get how this works ;-; :p WILL,,GIVE,,BRAINLIEST!!!!!!!!!Question:In pictureHAVE A BRAINLY DAY!!!! :D work out the probability that halima at least walks one way What does inconspicuous mean Which would best allow a species to survive environmental changes? (8.L.4.2)similar physicalfeatureslow mutation rategenetic diversitysmall population in this picture lines AB and CD are parallel. Find the measures of the following angles. Explain your reasoning. YALLLL I NEEDDDD HELPPPPPPP LOOK QT THE PICTURE PLZZZ hey diddle diddle, the median's the middle; you add and divide for the mean. The mode is the one that appears the most,and the range is the difference between. 2,49,15,9Mean:Median:Mode:Range: is square root 1/9 a rational number? Explain What are 4 agricultural products presently being worked with and studied in Nc biotechnology? Evaluate the following expression: 24^3+7.2-15^5+6.2 fill in each blank with the present indicative, present subjunctive, or infinitive, based on the context.1. Todos los das, cuando yo _________ (LLEGAR) a casa, me quito los zapatos y me siento a descansar. Hoy hice lo mismo.2. Esta tarde, cuando __________ (LLEGAR) mi hija de la escuela, va a hacer su tarea.3. A menos que _________ (NEVAR), nosotros vamos a ir al parque tambin.4. Despus de _________ (PASAR) tiempo en el parque, tenemos que regresar a casa.5. En caso de que mi esposa no ___________ (PODER) salir temprano, voy a dejar comida en el horno.6. Oh no. Creo que necesito ir a Walmart para __________ (COMPRAR) leche.7. Con tal de que no _________ (HABER) mucho trfico, puedo salir y regresar rpidamente.8. Mi hija quiere que yo recicle ms. No voy a reciclar hasta que ella me ____________ (DECIR) cmo comienzo.9. Dnde est mi hijo mayor? l siempre me manda un texto cuando ____________ (SALIR) de sus clases.10. Pues, cuando l __________ (VOLVER) a casa, le voy a preguntar "por qu no me mandaste un texto para avisarme dnde andabas"? Please help me out please! Read this excerpt from Brighton Beach Memoirs.KATE (Comes out of the kitchen with a glass of lemonade and one roller skate) A roller skate? On my kitchen floor? Do you want me dead, it that what you want?EUGENE (Rushes into the house) I didn't leave it there.KATE No? Then Who? Laurie? Aunt Blanche? Did you ever see them on skates? (She holds out the skate) Take this upstairs... Come here!EUGENE (Approaches, holding the back of his head) Don't hit my skull, I have a concussion.Which line from the excerpt provides historical context?A) Don't hit my skull, I have a concussionB) Do you want me dead? Is that what you want?C) A roller skate? On my kitchen floor?D) No? Then who? Laurie? Aunt Blanche? What is the value of 4x 3y if x = 3 and y = 6? Use the figure at the right. If JK = 2x + 12 and NO = 14, what is the value of x? Is water abiotic or biotic? When finding the common denominator between fractions, which value can be helpful, GCF or LCM? If the offspring of the cross showed ccdominance, what would the eyes of the offsping look like? Answer.. the offspring would have one circle eye and one star eye. 5. Why should the free ends of a conduction tester not be connected for a longtime?