what is a rule for determining the mass number of an atom or ion​

Answers

Answer 1

Answer:

The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.

sorry if im wrong

Explanation:


Related Questions

NaCl is 0.85% m/v calculate molarity ​

Answers

Answer:

For example, 0.9% NaCl contains 0.9 g NaCl per 100 ml of solution or 9 g NaCl/l. This can be converted to molarity by dividing by molecular weight: 0.9% NaCl = (9g/l)/(58.5g/mole) = 0.15 M NaCl.

The pieces of the Earth's crust or lithosphere that fit together like jigsaw puzzle pieces are called:

Question 1 options:

subduction plates

continental plates

mountain plates

tectonic plates

Answers

Answer:

Tectonic Plates

Explanation:

SANA MAKATULONG TO

AND GOD BLESS

Tectonic plates are pieces of the Earth's crust or lithosphere that fit together like jigsaw puzzle pieces.

What is Lithosphere?

This is defined as the rocky outer part of the Earth. It consists of tectonic plates in the form of different pieces.

They also fit together like jigsaw puzzle pieces which was why option D was chosen as the most appropriate choice.

Read more about Tectonic plates here https://brainly.com/question/1162125

about how many days does it take to go from one moon phase to another

Answers

Answer:

After one month, the Moon returns to the same location in the sky as the Sun and we see a New Moon again. The demo represents a month as 28 days for simplicity. But the real cycle of phases takes 29.5 days to complete.

please I'm not really sure.

Answers

Answer:

a pea!

Explanation:

Answer:

A pea

Explanation:

We already know a electron is smaller than a proton.

Help why isn’t
No one helping

Answers

Answer:

the second one

Explanation:

speed = Distance divided by time

how many total atoms of each element are presented in the following formula ​

Answers

Answer:

Aluminium (Al): (3*2)+(5*2)=16

Sulphor (S): (3*1)=3

Oxygen (O): (4*3)+(3*1)=15

10. Find the mass of 0.061 mol of H2O2.
11. Find the mass of 0.30 mol of Ne.

Answers

Answer:

10. 2.0748gm

11. 6.05391gm

Explanation:

What is physical weathering NOT caused by? (pls i really need help with this!!)

Answers

Answer:

the changing tempure in rocks causing it to back apart


Calculate the molarity of a MgSO4, solution
prepared by adding 0.32 moles of MgSO4, to
enough water to make 5.5 L of solution,
Answer in units of M.

Answers

Answer:

0.058M is molarity of the solution

Explanation:

Molarity is defined as the ratio between the moles of solute (In this case, MgSO₄) and the liters of solution.

In the problem:

Moles MgSO₄: 0.32 moles

Liters solution: 5.5L

Molarity is:

0.32 moles / 5.5L =

0.058M is molarity of the solution

Can someone help me with this

Answers

Answer:

i believe the correct answer is "Complete metamorphosis"

Explanation:

Which is there not a bacteria shape

Answers

Answer:

i cant help you, if you'd like you can re-post this with a photo of the bacterial shapes or explain them.

Explanation:

:)

brainiest plsss helpp

Answers

Answer:

b 13kg/m³ is the answer to this question

Answer:

A) 19320 kg/m^3

Explanation:

hope this helps and please give me brainiest if i get it correct or if you want? i would be happy if you did :D

Which choice best describes the objects motion from 2 to 5 seconds

Answers

Answer:

c is da answer it didn't move

How to convert 1348celsius to kelvin in stoichiometry reaction of a gas. The gas turned white not green.

Answers

Answer:

1621 K

Explanation:

How to convert 1348 celsius to kelvin

Celsius and Kelvin are both units for temperature. The relationship between both units is given as;

Kelvin (K) = Celsius ( °C )  + 273

Inserting the values from the question;

Kelvin (K) = 1348 + 273 = 1621 K

someone please help me with this????

Answers

Answer:

D po ayan po ang sagot ko salamat po

A student is making lemonade. He added 5 g of lemonade mix to a container of water. The student then weighed the container with the lemonade. The total weight was 23 g. The empty container weighed 8 g after all the lemonade was gone. How much did the water weigh? O A. 38 B. 108 C. 158 OD. 18 g RESET Arianna Thomas, ID#* *87 Growth: Science 6+ GA 2016 Question # 11​

Answers

23-8=15. Then you subtract the weight of the lemonade mixture (5) from the amount of combined weight (15) in order to get your answer (10). Hope this helps!

(this is due tonight)
Give a real life example of something that is measured in velocity units.​

Answers

Answer:

Velocity of a satellite around the earth.

Velocity of a car while driving.

Explanation:

For each problem, define whether you are calculating for a scalar or vector quantity. Show your work to receive full credit.

A ball travels 300 m in 2,000 secs going east. What is the velocity of the ball?

Answers

Answer:

I dont get what you need help with

Explanation:

Answer:

i dont get what your supposed to do either

What is an Isochron map

Answers

Answer:

An isochrone map in geography and urban planning is a map that depicts the area accessible from a point within a certain time threshold. An isochrone is defined as "a line drawn on a map connecting points at which something occurs or arrives at the same time".

Explanation:

Answer:

An isochrone (iso = equal, chrone = time) is defined as "a line drawn on a map connecting points at which something occurs or arrives at the same time". In hydrology and transportation planning isochrone maps are commonly used to depict areas of equal travel time.

Explanation:

BRAINLIEST plz

7. From the arteries, blood flows into tiny, narrow vessels called _________________________________________.

Answers

Answer:

Arterioles

Explanation:

Arterioles

The heart and blood vessels constitute the cardiovascular (circulatory) system. The blood circulating in this system delivers oxygen and nutrients to the tissues of the body and removes waste products from the tissues.

The blood vessels consist of

Arteries
Arterioles
Capillaries
Venules
Veins
All blood is carried in these vessels.

Which two processes turn layers of loose sediment into hard sedimentary rock? (ASAP)

Answers

Answer:

compaction and cementation

Explanation:

Answer:

compaction and cementation

Explanation:

Based on percent ionic character the bond between Al & Br would be classified as
A. ionic
B. polar
C. nonpolar
D. metallic
*************PLEASE HELPPPPPPPPP*********

Answers

Answer: I think it's  A

Explanation:

Which of the following is the mass in grams of 4.25 × 10³ mol of N2?

Answers

Answer:

119,059.5 g/mol

Explanation:

First, find the mass of N2

On the periodic table, nitrogen is 14.007

Because there are two nitrogens, multiply it by 2

14.007*2 = 28.014 g

Now convert... (also don't let that exponent intimidate you! You can change it to 4250 if that makes it easier)

4.25 × 10³ mol * 28.014 g/1 mol = 119059.5 g/mol

PLEASE HURRY!!!! The diagram shows 2 identical charged particle. How does the potential energy and the force of repulsion changes as the charges are brought closer together

Answers

Answer:

Please did you ever get an answer??

Explanation:

Im doing usa test prep too and its really late

What would be the right answer?

Answers

Answer:

5 is the answer since they are asking for pair. And 3 pairs in the triple bond

Answer:hydrogen=1

carbon=3

total=2h+c=2×1+3=5

How do you calculate neutrons of an element???

Answers

Answer:

The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z). Hope This Helps

Explanation:

What is the correct name for TiF3

Answers

Answer:

Titanium fluoride

Explanation:

Titanium (lll) fluoride

How do electric charges occur?

Answers

Answer:

In an atom of matter, an electrical charge occurs whenever the number of protons in the nucleus differs from the number of electrons surrounding that nucleus. If there are more electrons than protons, the atom has a negative charge. If there are fewer electrons than protons, the atom has a positive charge.

Explanation:

Plz help me out with this
10 points ​

Answers

Answer:

you can tell diorite is an intrusive igneous rock because it has a coarse-grained texture

It has a course-grained texture and the different colors indicate the different rocks that the magma intruded into to make the intrusive igneous rock, or in this case, the diorite.

what is the name of the world's first scientist?​

Answers

Answer:

Aristotle is considered by many to be the first scientist, although the term postdates him by more than two millennia. In Greece in the fourth century BC, he pioneered the techniques of logic, observation, inquiry and demonstration.

Explanation:

hope this help:))

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What was the most important issue dividing the Federalists and the Democratic Republicans? Your teacher is selecting class partners by drawing names out of a bag. There are 12 girl's names and 10 boy's names. What is the probability that she selects a boy's name followed by a girl's name (without replacement)?A) 20/77B) 30/121 Franklin's "Remarks Concerning the Savages of North America" is historically significant because it is among the first written works to promote tolerance towards others. True False Nate has a bag containing 3 red, 2 blue, 4 yellow, and 3 green marbles. If he randomly chooses one marble from the bag, what is the probability that the marble will be blue? Please give me ideas for a writing competition the topic can be about anything!!! The black line on the map below represents tec-tonic plates. The red line shows the longest ridgein the world. This mid-ocean ridge extends forabout 10,000 miles and is characterized by shal-low earthquakes and minor lava flows. It isknown as a spreading zone, as it is responsiblefor ocean sea floor spreading.Based on the evidence, what type pf plateboundary is responsible for this mid-oceanridge?A.Convergent B.Divergent C.TransformD.Oceanic PLEASE HELP ASAP I BEG OF YOU PLEASE PLEASE HELP ME FAST.I WILL GIVE BRAINLEST.!!!!!!!!!!!!!!! i need the answer for this PLEASE PLEASE HELPPPPPPP NOWWWWWW!What economic effects did the Columbian Exchange have on Europe? Choose three correct answers.Investors became less wealthy.Merchants made fewer trade voyages.Spain gained wealth by trading silver with Asia.Europe became the center of the first global economy.Many European nations became wealthy through increased trade. The unique identifier for each record in a database table is called theA. Record Id B. Id numberC. Primary key D. Row number The Scramble for Africa refers to A. African nations running from Europeans. B. European nations wanting the biggest and richest colonies in Africa. C. Africa becoming industrialized. D. The nations of Africa becoming independent. If the gravitational constant is extremely weak, how is the force of gravity on earth so strong? What is the sum of x- and y-coordinates of the midpoint between (-8,-4) and (-9, 8)? 7 is what percent of 36?a. 19.4%b.194%a 5.14%d. 514.3% What are some parts of French language or of French culture that you didnt expect, or didnt know before taking French classes? 12 sheets of paper out of 28 7/9 of 10800please help quickly !! Which detail supports the main idea Bats are useful to humans?Bats often live in large colonies in caves and under bridges.Bats are the only mammal that truly flies.Bats eat hundreds of mosquitoes and other annoying insects at night.Some bats carry rabies, a deadly virus. William Parks, a special agent of the U.S. Customs Service, was investigating allegations that Bet-Air, Inc. (a seller of spare aviation parts and supplies) had supplied restricted military parts to Iran. Parks entered Bet-Air's property and removed a bag of shredded documents from a garbage dumpster. The dumpster was located near the Bet-Air offices in a parking area reserved for the firm's employees. To reach the dumpster, Parks had to travel 40 yards on a private paved road. No signs indicated that the road was private. In later judicial proceedings, Parks testified that at the time he traveled on the road, he did not know he was on Bet-Air's property. When reconstructed, some of the previously shredded documents contained information seemingly relevant to the investigation. Parks used the shredded documents and the information they revealed as the basis for obtaining a warrant to search the Bet-Air premises. In executing the search warrant, Parks and other law enforcement officers seized numerous documents and Bet-Air records. A federal grand jury indicted Bet-Air's chairman, Terence Hall, and other defendants on various counts related to the alleged supplying of restricted military parts to Iran. Contending that the Fourth Amendment had been violated, Hall filed a motion asking the court to suppress (i.e., exclude) all evidence derived from the warrantless search of the dumpster and all evidence seized during the search of the Bet-Air premises (the search pursuant to the warrant). The federal district court denied Hall's motion. Following a jury trial, Hall was convicted on all counts and sentenced to prison. He appealed, again arguing that the Fourth Amendment was violated. How did the appellate court rule? Was there a Fourth Amendment violation? how do you solve (7x + 5) - (3x + 2)