Identify the elements and the number of atoms for each element in the following chemical formulas:

HNO3

Na2SO4

MgCl2

Answers

Answer 1
1. Note the amounts of atoms of all the component in HNO3, which are 1 atom of Hydrogen, 1 atom of Nitrogen and 3 atoms of Oxygen. Multiply each of the atomic weights by the amount of atoms of each element contained in the compound. Add up the results to obtain the molar mass: 1 + 14 + (16 x 3) = 63 gr/mole.
2. In one molecule of sodium sulfate, or Na2 SO4, there are seven atoms in all.
3. Magnesium dichloride is a magnesium salt comprising of two chlorine atoms bound to a magnesium atom. It is a magnesium salt, an inorganic chloride and a magnesium halide.

Related Questions

Is DNA bigger than proteins?

Answers

Answer:

Average weight of a DNA base pair is 650 Da. And you can find the molecular weight of DNA by using a formula, no. of basepairs*650 Da.

If u take the DNA that has information to code particular protein I presume that DNA has higher molecular weight than the protein product

Plz Help Me Will make brainliest if got it right!!!

Answers

Answer:

Sorry if I'm wrong but I think it's B

Explanation:

A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events such as famines, earthquakes, floods, fires, disease, and droughts or human activities such as specicide and human population planning.

It’s b I had to do a project on the same bottle neck topic

if i have a dream about someone i know (that i dont like as a crush) that kissed me on the head in the dream what does it mean (help pls :/

Answers

Did you try looking it up online, they give good interpretations

Please help and thanks

Answers

I believe the answer is B

What can humanity affect about the amount of carbon in the ___? PLEASE HELP cycles of matter 19.1 study guide

Answers

Answer:

carbon cycle

Explanation:

A carbon cycle is a cycle that is defined as the continuous transfer of the carbon from the earth to the atmosphere and back to the earth form the atmosphere.

Humans affects the carbon cycle to a large extend by cutting down trees and burning the fossil fuels. The vehicles running on the road also releases large amount of carbon into the atmosphere. Large industries and factories are also one of major cause for the increase in the carbon level in the atmosphere. It all affects the carbon cycle as more and more carbon is released into the atmosphere and very less is absorbed back due to less trees.

Dr. Bakker a cardiologist recently imigrated from Amsterdam to the USA where she has been asked to revalidate her credentials before being able to practice as a cardiologist in the USA. As part of this revalidation, she had to take an intelligence test, which she perfomed Below Average, which she found absurd. This is an example of

Answers

Incomplete question. However, I provided an overview of the conditions warranting such actions.

Explanation:

It is interesting to note that examples such as these indicate the standard procedure followed in the medical field in the United States.

Although in this example, the test candidate felt her grade was an unexpected one, it, however, proofs to show that such tests are very important in improving the quality of care administered in hospitals.

Thinking about the safety of yourself and your fellow classmates. Does the school have adequate safety measures in place? Is the school safe with the current procedures? What concerns do you have about the school’s safety measures? How can you improve the safety of your fellow classmates? Create a plan to improve the current safety measures in the school. Include specific methods and materials in your improvement plan. Answer the previous questions in your improvement plan. Use research and resources to provide data for your improvement plan. Include a title and a resource section that includes the sources used for your data.

Answers

Answer:

Yes it does for example the science room has the materials to be safe during school.No because there is still the covi going on and some students aren't taking it seriously.One concerne that I have is that if they need help with their studies their should be tutoring

Analyzing Gas and 1. Based on what you read, what is true about gases in the atmosphere? a All gases in the atmosphere affect energy the same way. b Different gases in the atmosphere affect energy differently. C No gases in the atmosphere affect energy at all. d Ozone is the only gas in the atmosphere. Scroll​

Answers

Answer:

Explanation:

. .

2.

Question 1: Selective Breeding
3 points
(b) The cat breeder wants to use selective breeding so that all new
kittens have blue tail tips. Describe the process of selective breeding the
cat breeder could use. *

Answers

Make sure the mom or dad cat has the gene for a blue tip tail whether it’s recessive or dominant

describe an example that shows reproductive isolation without geographic isolation

Answers

Answer:

Temporal Isolation

Explanation:

Temporal isolation relates to the time at which organisms mate. If a group of organisms mate in the winter and another group mates in the summer, they won’t mate together. This can cause speciation to occur. Hope it helps :)

What is the evidence that warmer water temperature is an environment factors influencing the growth of a species

Answers

Answer:

The answer is below

Explanation:

The evidence that warmer water temperature is an environmental factor influencing the growth of a species is that "warmer water temperature leads to coral bleaching and negatively affects the natural habitat for fishes and marine mammals."

Another evidence is the fact that warmer water temperature results to adverse weather condition which negatively affect the food security for humans and loss of waterside areas.

1. Patient c:
Using the karyotype below and the chart from the last screen:
A. Determine the sex of the patient
B. State the total number of chromosomes of the patient
Diannose the patient.

Answers

A. Patient is male because there is a Y chromosome

B. 47 chromosomes

C. Down syndrome or trisomy 21

What family does a mushroom belong to and what species is a mushroom. Please answer ASAP

Answers

Explanation:

On more technical scrutiny; Mushrooms (Agaricus bisporus) belong to the fungi family- they are fungi. Mushrooms are classed as Basidiomycetes and conveniently given their own order: Agaricales.

Answer:

Mushrooms are fungi. They belong in a kingdom of their own, separate from plants and animals. Fungi differ from plants and animals in the way they obtain their nutrients

Explanation:

Which of the following would most likely lead to the development of analogous structures in two
different species?
Choose 1 answer:
One species lives in a warm water pond, and a closely related species lives in a cold water
pond.
B
One species lives in a pond, and a closely related species lives in a nearby forest.
One species lives in a desert, and a distantly related species lives in a pond.
D
Two distantly related species both live in hot, dry deserts.

Answers

Answer: D. Two distantly related species both live in hot, dry deserts.

Explanation: Don't worry it's right. I know that for a fact because I just took the test.

The situation that would most likely lead to the development is : ( D )

Two distantly related species both live in hot, dry deserts ( D )

Analogous structures

Analogous structures are structures found in different species that appear to be similar and are also used for the same purpose in both species.

Analogous structures are not inherited from the same ancestor but are developed overtime to serve a certain purpose.

Hence we can conclude that The situation that would most likely lead to the development is Two distantly related species both live in hot, dry deserts.

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What is the vector of swollen shoot disease?

Answers

Answer:

The virus is transmitted from tree to tree by mealybug vectors. It was first discovered in Ghana in 1936, and is currently endemic in Togo, Ghana and Nigeria.

Explanation:

Answer:

Cacao swollen shoot virus

Family: Caulimoviridae

Genus: Badnavirus

Explanation:

Cacao swollen shoot virus (CSSV) is a plant pathogenic virus of the family Caulimoviridae that primarily infects cacao trees.

State the role of double fertilisation in ensuring the survival of flowering plants.

Answers

Answer:

1.Two products are obtained as a result of double fertilization.

2 There are chances of polyembryony, and the plant has better chances of survival.

3.Double fertilization gives rise to an endosperm that provides nourishment to the developing embryo.

4.It increases the viability of the seeds of angiosperms.

5.It utilizes both the male gametes produced by the pollen grains.

Dna is the instructions manual for a living thing. Each time one of your cells divide , your dna is copied. That way, each new cell has its own copy of the instruction manual.On the line below,list some items that come with instructions

Answers

Answer:

DNA is the hereditary material in humans and almost all other ... Human DNA consists of about 3 billion bases, and more than 99 ... for building and maintaining an organism, similar to the way in which ... is critical when cells divide because each new cell needs to have an ... Thank you for your feedback!

Explanation:

Dna la me la traga fuerte mi monda

Answer:

A recipe book

A job

Or even also a science project

what does it mean when i say that butterflies represent me

Answers

Answer: it could mean you are nervous people often refer butterflies to a nervous jittery feeling in their stomach or it could mean your pretty or when people call other people names and things like that then you could say im just a catterpillar now but im gonna transform into a beautiful butterfly soon id.k im not really sure

You are viewing a patients karyotype. You see 23 chromosomes total. There
are no homologous chromosomes. Which type of cell are you viewing?

Answers

Answer:

You are viewing an egg cell

The type of cell that you are viewing is known as the Germ cell (sex cell). This is because the number of chromosomes in the germ cell is found to be 23 instead of 46.

What do you mean by Karyotype?

Karyotype may be defined as the process through which the number of the appearance of chromosomes within the nucleus of the cell is determined in organisms or species. This type of process is utilized in order to examine the complete characteristics of chromosomes.

Germ cells are produced by meiosis. Due to this, they carry half the amount of genetic content in their nucleus as compared to the parental cell. They are haploid in nature.

When a female egg cell of 23 chromosomes fused with a male sperm cell of 23 chromosomes, it forms a zygote which is diploid and contains 46 chromosomes.

Therefore, the type of cell that you are viewing is known as the Germ cell (sex cell).

To learn more about Germ cells, refer to the link:

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Which body system does NOT have an excretory organ?
Circulatory System
Excretory system
Respiratory System
Digestive system

Answers

The Circulatory system does not have an excretory organ.

The answer is the Circulatory system.

18. Intermediate fossil forms are important evidence
of evolution because they show
a. how organisms changed over time.
b. how animals behaved in their environments.
c. how the embryos of organisms develop.
d. molecular homologies.

Answers

Answer: Option A

How organism change over time

Explanation:

This is because intermediate fossils are form of fossils that are transitional because they are the transition change that occur between ancestral species and the descendents organisms. Therefore changes occur over time as organisms are been transited.

For example;

Amphibian or land vertebrate (Pederpes) have Intermediate form and it is transited between primary aquatic Upper Devonian amphibians

which is the anscestral and to early tetrapods which is the descendants.

What is the name of the structure labelled F in the diagram below

Answers

Where’s the diagram????

Task 4: STAAR® Connection Question 2. In some species of plants, such as potatoes, the roots form specialized structures we call eyes. If planted, the buds will develop into a new potato plant. Which plant called tubers. The potato tubers, which store carbohydrates, can develop buds, which structures are most involved in the formation of tubers? A Shoot system and reproductive system Vascular tissue and reproductive tissue C Vascular tissue and shoot system D Shoot system, root system, and vascular tissue​

Answers

Answer:

your answer is c

Explanation:

i dont know how to explain


Differentiate between Mesozoic era and Cenozoic era on the basis of time scale and origin of species.​

Answers

Answer:

Explanation:

The Mesozoic Era is known as period of significant tectonicas well as climate, and evolutionary activity. It was known as as " Age of Dinosaurs or Reptiles" . During this era, the dominant form of life is dinosaurs.The Mesozoic Era come to life, arround 252.2 million years back. This Era can be sectioned into three different periods which are; ✓Triassic

✓Jurassic

✓Cretaceous

The span period of Cenozoic era was about 65 million years, this range from the end of the Cretaceous Period as well as the extinction of non-avian dinosaurs up to the present. Cenozoic era can be reffered to Age of Mammals such as (woolly rhinoceroses) this is because the largest land animals at this is mammals .The Cenozoic Era can be regarded as "new life" and it's known to be " age of mammals simply because largest animal that is available that time is mammals This era serves as the current as well most recent era among the three geological eras of the Phanerozoic Eon. The Cenozoic era has its spans of about 65 million years, and this range from towards end of the Cretaceous Period to the extinction of non-avian dinosaurs up to the present

The Cenozoic Era can be sectioned

into three periods which are;

✓ Paleogene : This is arround 66 million to 23 million years ago)

✓ Neogene : This is arround 23 million to 2.6 million years ago)

✓Quaternary; This is arround 2.6 million years ago to the present);

which two systems are the kidney,bladder,colon,stomach, and small intestines associated with?​

Answers

Answer:

The urinary system removes waste from the body. It is also important for keeping the body in homeostasis (balance) by controlling the composition and volume of blood. The organs of the urinary system are the two kidneys, the two ureters, the bladder and the urethra.

Explanation:

Hey mate, here's your answer..

it is associated with urinary system...................

How long has Earth been in its current era?

A. 1.8 million years
B. 65 million years
C. 5 billion years
D. 200,000 years

Science A P E X

Answers

The correct answer is B. 65 million years.

Earth has been in its current era, known as the Cenozoic Era, for approximately 65 million years.

The Cenozoic Era is the most recent geologic era and is characterized by the diversification and dominance of mammals, including the emergence of human beings. It is divided into three periods: the Paleogene, Neogene, and Quaternary.

The Cenozoic Era followed the Mesozoic Era, which ended with the mass extinction event that wiped out the dinosaurs.

The Cenozoic Era has witnessed significant geological, climatic, and biological changes, shaping the Earth's current state and providing the foundation for the development of modern ecosystems.

For more such answers on Earth

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Which statements about diuretics are true? Select all that apply.

Diuretics flush liquid out of the urinary system.

Diuretics are always dangerous to health.

Diuretics may cause a variety of side effects.

Diuretics are most commonly prescribed as a treatment for high blood pressure.

Answers

Answer:

The answers are A, C and D.

Explanation:

A, C and D are all correct descriptions.

Answer:

A,

C,

D!

Explanation:

How many organs work together to accomplish the function of the digestive system?

Answers

Answer:

3 organs

Explanation:

The hollow organs that make up the GI tract are the mouth, esophagus, stomach, small intestine, large intestine, and anus. The liver, pancreas, and gallbladder are the solid organs of the digestive system. The small intestine has three parts. The first part is called the duodenum.

3. Where do organisms get the energy they need?

Answers

Organisms that are carnivorous or omnivorous obtain their energy from secondary sources, which include other animals (as well as plants for omnivores). Omnivores and Herbivores obtain their energy from eating plants, which makes them a secondary source. The primary source would be the plants, which would obtain energy from the nutrients in the ground, as well as from sunlight. The sun, in which case, would be the original source.

~

Every organism needs energy to survive. A process in which oxygen is combined with the breakdown of sugar (glucose) molecules, releasing energy and giving off carbon dioxide and water, is known as which of the following reactions?

A. Transpiration

B. Cellular respiration

C. Carbon fixation

D. Photosynthesis

Answers

B. Cellular respiration
I think the answer is D
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