Answer:
We assume that there is 100g of the compound (because it makes it easier to calculate) and we turn the percentages into grams.
2% of Hydrogen = 2g of H
32.7% of Sulfur = 32.7g of S
65.3% of Oxygen = 65.3g of O
Now we change the mass of these elements to moles by dividing the mass by the molar mass (which is the value of atomic mass on your periodic table)
2g/1.01g = 1.98 mol
32.7g/32.06g = 1.02 mol
65.3g/16g =4.08 mol
divide all these mol values by the smallest mol value, which is 1.02. (Round the values to whole numbers)
1.98/1.02 = 2 (rounded) of Hydrogen
1.02/1.02 = 1 of Sulfur
4.08/1.02 = 4 of Oxygen
H2SO4 (also known as sulphuric acid) is your empirical formula.
is a single cell the smallest structure that carries out our activities nesscesary for life
yep, the cell is the smallest unit in a living organism that is capable of carrying out all of the activities of life.
the primary difference between enhancers and promoter-proximal elements is that enhancers _____.
Answer:
Enchancers are transcription factors
I hope that helps you
for which elements are outer electrons and valence electrons the same?
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.
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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
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.
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
What are their name?
Answer: Ch3 is Methlene Ch2 is Methyl Ch is Benzen
Explanation:
Hope this helps
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.
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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what is meant by pure substance????
how to keep apples from browning without lemon juice?
Answer:
eat
Explanation:
eat the dang apples
omg y'all pls so much help me!!!
1. H2SO4
2. MGNO3
their %
How many molecules of H2O are there in 200,000,000L of gas at STP?
A watch loses 0.15 sec/min, how many seconds are lost in 24 hours?
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
which temperature scale avoids negative temperatures
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.
What is the difference between Eukaryote and Prokaryote cells?
if the student finds the weight of the sodium chloride to be 28.5g,calculate the number of particles.(Na=23,Cl=35.5)
Answer:
2.93×10^23
Explanation:
molecular formula of NaCl is 58.5
58.5gof NaCl=6.023×10^23
28.5g of NaCl= 6.023×10^23÷58.5×28.5
= 2.93×10^23
___is a measure of the change in velocity of a
moving object.
THIS IS URGENT ! Please fill in the blank
how is the mode of data set defined
it is the middle value of the set
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.
the elements on the periodic table are arranged in order of increasing
Answer:
atomic number
Explanation:
A. An atom neutral (one with 0 extra charge)?
Answer:
Neutron is the correct answer.
What’s a conjugative Bas of OH-
Answer:
the answer is O²- hopefully
What increases the concentration of H+ in water ?
Answer:
Acid
Explanation:
I WILL MARK BRAINLY-EST Do you think the way we perceive food in our culture supports the guidelines in MyPlate? Explain your
answer
Samantha is investigating the densities of several liquids. Which action is the result of her creative thinking ?
Answer:
A. Poe
Explanation:
pagmali sorry na Lang
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.
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 many pairs of electrons are shared between two adjacent carbon atoms in a saturated hydrocarbon?
PLZ HELP i need it now
Can someone help me with this chemistry question please?
C. Energy use
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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)
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.Learn more: https://brainly.com/question/6111443
What do you put in the cavity of an unstuffed turkey?
the diagram of paper chromatography
I hope that the attachment helps you..