Chemistry High School

Why is lead(II) nitrate: “Pb(NO3)2” and not “Pb3NO2”?

Just a bit confused because it looks a bit funny compared to how I learned how to write compounds.

Answers

Answer 1

Explanation:

this is because the combining capacity, ie valency, of Pb is 2 of which NO3 is 1. So, when they will combine by cross method, the compound become Pb(NO3)2 (lead II nitrate).

hope this helps you.

Related Questions

A student wants to perform an experiment to study the relationship between the temperature and pressure of an enclosed gas. In one or two sentences, describe two assumptions that must be made in performing this experiment.(2 points)

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An assumption that must be made when studying the relationship between pressure and temperature is that the gases do not interact with each other.

An experiment seeks to understand the effect of one variable on the other. The relationship between the pressure and temperature of a gas is commonly studied.

In an experiment to determine the relationship between temperature and pressure of a gas, the following assumptions must be made;

The gases molecules only occupy only a negligible volume compared to the total volume of the gas.The gas molecules do not interact with each other.

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what does not happen when the temperature is increased ?

Answers

More particles collide in the correct orientation​
I agree with the person above me, more particles do collide in the correct orientation and the particles collide more often and with more energy.

A. An atom neutral (one with 0 extra charge)?

Answers

Answer:

Neutron is the correct answer.


What are their name?

Answers

Answer: Ch3 is Methlene Ch2 is Methyl Ch is Benzen

Explanation:

Hope this helps

Can someone help me with this chemistry question please?

Answers

C. Energy use

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omg y'all pls so much help me!!!
1. H2SO4
2. MGNO3
their %​

Answers

H2SO4
H: 1 x 2 = 2
S: 32 x 1 = 32
O: 16 x 4 = 64
98amu

H: 2/98 x 100 = 2%
S: 32/98 x 100 = 33%
O: 64/98 x 100 = 65%


MGNO3 (I think you meant Mg(NO3)2 aka Magnesium Nitrate. So this might be wrong because I did the version you sent instead of what I thought you might mean.)

Mg: 24 x 1 = 24
N: 14 x 1 = 14
O: 16 x 3 = 48
86amu

Mg: 24/86 x 100 = 28%
N: 14/86 x 100 = 16%
O: 48/86 x 100 = 56%

___is a measure of the change in velocity of a

moving object.

THIS IS URGENT ! Please fill in the blank

Answers

Acceleration is a measure of the change in velocity of a moving object. :)

how is the mode of data set defined
it is the middle value of the set

Answers

Answer:

No, mode isnt the middle value of a set that is median.

Explanation:

Mode (also known as modal class) is the value that appears most frequently in a data set.

I WILL MARK BRAINLY-EST Do you think the way we perceive food in our culture supports the guidelines in MyPlate? Explain your

answer

Answers

Yes, some cultures eat healthier due to restrictions on some foods they won’t eat due to their culture. So eating healthier because of that endorses the guidelines on my plate since they push us to eat healthier. One prime example is Japanese culture they believe in a balanced meal and balanced presentation.

is a single cell the smallest structure that carries out our activities nesscesary for life

Answers

yep, the cell is the smallest unit in a living organism that is capable of carrying out all of the activities of life.

What's the Matter?
Which statements correctly describe matter? Select all that apply.
A. Matter is made up of atoms.
B. Matter is a measure of the amount of material in an object.
C. Matter may exist as a solid, liquid, or gas.
D. Matter forms when particles chemically bond together.
E. Matter includes both elements and compounds.

Answers

The answer is C for matter is made up of atoms that can turn into those three stages

Answer:

Matter is anything that takes up space and has mass. Mass is the stu that matter is made of, or the amount of particles in a substance or object. Matter has physical and chemical properties and can undergo physical and chemical changes

C. Matter may exist as a solid, liquid, or gas.

Explanation:

how to keep apples from browning without lemon juice?

Answers

Answer:

eat

Explanation:

eat the dang apples

A beaker contains an acidified copper sulphate solution.A copper plate and a carbon plate is connected to postive terminal to battery whereas carbon rod is connected to negative terminal of battery.What will you observe when an electric current is passed through this setup for a considerable time​

Answers

The copper plate connected to positive terminal (anode) will decrease in size and wear away and the copper plate connected to negative terminal (cathode) will increase in size and thicken, the electrolysis will continue until the anode completely disappears

what is meant by pure substance????​

Answers

Pure substance means substance is made of one type of molecules.Or you can tell it that the heterogeneous mixtures of molecules are called pure substances.For example:-Hydrogen,water ,all elements and compounds

What’s a conjugative Bas of OH-

Answers

Answer:

the answer is O²- hopefully

which temperature scale avoids negative temperatures

Answers

Answer:

See below:

Explanation:

Hello! My name is Galaxy and I will be helping you today. I hope you are having a nice day.

There are 3 main ways to measure temperatures, you have Celsius, Fahrenheit, and Kelvins.

Celsius and Fahrenheit are main ways to measure heat in non-scientific terms, althought they are used sometimes when needed.

Kelvins are used for Science as they are precise and can deal with temperatures that are super hot or super cold.

The lowest temperature in Kelvins is 0 degrees Kelvin, also known as Absolute Zero. There are no temperatures above that. So the answer to your question would be Kelvins.

the primary difference between enhancers and promoter-proximal elements is that enhancers _____.

Answers

Answer:

Enchancers are transcription factors

I hope that helps you

How do the isotopes hydrogen-2 and hydrogen-3 differ?
A. Hydrogen-2 has three protons.
B. Hydrogen-2 has no protons.
C. Hydrogen-3 has one more electron than hydrogen -2.
D. Hydrogen-3 has two neutrons.
PLS SOMEONE HELP

Answers

Answer:

C hydrogen 3 has 0one more electron than hydrogen 2

How many molecules of H2O are there in 200,000,000L of gas at STP?

Answers

Mass of 1 mole of
H2O,200,000,000L,STP = 65.05999898g

Samantha is investigating the densities of several liquids. Which action is the result of her creative thinking ?

Answers

Answer:

A. Poe

Explanation:

pagmali sorry na Lang

What do you put in the cavity of an unstuffed turkey?

Answers

Answer: Stuffing


hope this help

for which elements are outer electrons and valence electrons the same?

Answers

Answer:

The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms. This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.

Explanation:

Elements of same group have same number of valence electrons and similar physical and chemical properties.

What are groups in periodic table ?

A periodic table is classified into different columns and rows. The vertical columns in the table are called groups and the horizontal rows are called periods.

From left to right, the atomic number of elements increases by one and atomic size increases.  Down a group, the number of electrons and atomic size as well increases.

Elements of same groups have same number of outer electrons or valence electrons. They show similarities in chemical and physical properties.

For example,  lithium and sodium are in the first group. They both have one valence electron.

Find more on groups in periodic table :

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What increases the concentration of H+ in water ?

Answers

Answer:

Acid

Explanation:

acid
Non-neutral pH readings result from dissolving acids or bases in water. An acid is a substance that increases the concentration of hydrogen ions (H+) in a solution, usually by having one of its hydrogen atoms dissociate.

What is the difference between Eukaryote and Prokaryote cells?

Answers

A eukaryotic cell is what most cells categorise into like animal, plant cells and many more it is a memory bound organelle and the dna is enclosed within the nucleus whereas a prokaryotic cell includes bacteria and Protista where the only organelles it contains is ribosomes and the dna is not enclosed in a nucleus but free flowing
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A red car and a black car begin to accelerate from rest at the same time. The red car accelerates at a constant rate of 3 meters per square second. The motion of the black car is shown in the graph below.imageWhich of the following statements correctly compares the acceleration of the two cars?A.While the cars are accelerating, the red car accelerates faster than the black car.B.While the cars are accelerating, the black car accelerates faster than the red car.C.The red car only accelerates faster than the black car for the first second of acceleration.D.The black car only accelerates faster than the red car for the first second of acceleration.

Answers

That car moves or accelerates faster which has the higher speed.

If the red car accelerate at higher speed than black car then the red car reach first on the destination but if the black car moves with higher speed than red car then the black car reach its destination earlier than the red car.

The conclusion can be drawn when the image is present or any data but there is no data or image present which provides us accurate information so we can conclude logically that car which moves at higher speed will move faster than the other car.

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the diagram of paper chromatography​

Answers

I hope that the attachment helps you..

The missing box would be the number and this is a form of decay.


please help mark brainliest

Answers

Answer:

alpha decay or particle

Explanation:

A watch loses 0.15 sec/min, how many seconds are lost in 24 hours?

Answers

Answer:  

0.15 sec/min = 9 sec/hour

9*24 = 216 seconds = 3.6 minutes

Explanation:

Answer:

216 Seconds

Explanation:

If every minute is 60 seconds than 60 multiplied by .15 is 9 Seconds Lost.

If every hour is 60 minutes compared to what we know than 24 hours multiplied by 60 is 1440 minutes.

Do the same math as before: 1440 x .15 = 216 Seconds

How could you break down the compound calcium carbonate into the elements that make it up ?
A. by melting
B. by crushing
C. with filter
D. with chemical changes

Answers

Answer:

A. By melting

Explanation:

You can break it down by thermal decomposition which is basically melting it and thats because many metal carbonates can take part in thermal decomposition reactions.

the elements on the periodic table are arranged in order of increasing

Answers

Answer:

atomic number

Explanation:

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