Answer:
[tex]12x {}^{2} y - 32xy + 8y[/tex]
first factorise out 4y :
[tex] = 4y( {3x}^{2} - 8x + 2)[/tex]
34. Explain how dimensional analysis is used to solve
problems.
By understanding conversion factors and how they are related to each other we can use dimensional analysis to solve problems.
Dimensional Analysis is a step by step approach to solving problems in Physics, Chemistry , and Mathematics. It involves having a clear knowledge and understanding to be able to convert a given unit to another in the same dimension using conversion factors and knowing how they are related to each other.
For instance, In Chemistry, we want to Convert 120mL to L.(note that ml stands for millilitres and ;L stands for litres)
Or first approach will be to write out the conversion factor related to our problem which is
1000ml =1L
such that 120ml = (we cross multiply))
giving us 120ml x 1L/1000ml =0.12L
This same process is applied to convert any type of dimensional analysis problems be it physics or mathematics.
See related answer here: https://brainly.com/question/18108995
A ___________
is a process that occurs when
one or more substances are changed into one or more new
substances. For example, when zinc and sulfur are mixed
together with the addition of energy in the form of heat, zinc
sulfide (ZnS) is produced.
Answer:
Reaction??
Explanation:
Covert 313.0 K to Celsius
Answer:
39.85
Explanation:
Answer:
313 Kelvin (K) = 39.850 Celsius (C)
1 K = -272.150 C 1 C = 274.150 K
8 points
A tennis ball is thrown straight up with an initial velocity of 5 m/s (vi = 5
m/s). At the highest position, the velocity is O m/s (vf = 0 m/s). How high
does the ball rise? *
O 1m
1.3m
5m
25m
Answer:
1.3 meters
Explanation: use newton third law equation.
If I have 2.4g of magnesium, how many g of oxygen(O2 ) will I need to react completely with the magnesium? 2Mg +O2 → MgO
Explanation:
just trying....hope that helps
1.6 grams of oxygen will react with 2.4 grams of magnesium.
Explanation:
Given:
2.4 grams of magnesium.
The reaction between magnesium and oxygen:
[tex]2Mg+O_2\rightarrow 2MgO[/tex]
To find:
The mass of oxygen required to react with 2.4 grams of magnesium.
Solution:
The mass of magnesium = 2.4 g
Moles of magnesium =[tex]\frac{2.4 g}{24.305 g/mol}=0.0987 mol[/tex]
[tex]2Mg+O_2\rightarrow 2MgO[/tex]
According to the reaction, 2 moles of magnesium reacts with 1 mole of oxygen, then 0.0987 moles of magnesium will react with:
[tex]=\frac{1}{2}\times 0.0987 mol=0.04935\text{mol }O_2[/tex]
Moles of oxygen required = 0.04935 mol
The mass of 0.04935 moles of oxygen :
[tex]=0.04935\times 31.999 g/mol=1.579 g\approx 1.6 g[/tex]
1.6 grams of oxygen will react with 2.4 grams of magnesium.
Learn more about the unitary method and moles here:
brainly.com/question/2499283?referrer=searchResults
brainly.com/question/20703532
What does the scientific method process allow for?
It allows to test a inference, and analyze data to determine if the inference of the observation was correct.
what is exothermic reaction?
Answer:
Exothermic reaction is a reaction in which heat is evolved.
Ex-Salt water
Answer:
[tex]\huge\red{happy} \green{birthday} \pink{dear} \orange{lakshu}[/tex]
Food X was tested with Iodine solution; it did not turn blue black. Which food nutrient was being tested?
Jupiter's moon Europa orbits the planet at a distance of about 671,030 km. What is the correct way to write this distance in scientific notation?
A. 67.103 x 10-4 km
B. 67.103 x 104 km
C. 6.7103 x 105 km
D. 6.7103 x 10-5 km
Answer:6.7103x10^5 km
Explanation:
The planet is at a distance of about 6.71030 ×10⁵ km. Therefore, option (c) is correct.
What is scientific notation?Scientific notation is a way of representing a quantity as a number having significant digits that are necessary for a specified degree and multiplied by ten to the power.
The general form of scientific notation can be written as [tex]N \times 10^{a}[/tex].
A significant digit is that digit in a number which adds to its precision. A significant includes all nonzero numbers, zeros between significant digits, and zeros represent to be significant while leading and trailing zeros are not significant digits as they exist only to represent the scale of number.
Given, using the scientific notation method we can write the scientific notation of the distance of 671,030 km.
The number 671,030 km can also be written as 6.71030 ×10⁵ km.
Therefore, the correct way to write this distance in the scientific notation of 671,030 km is 6.71030 ×10⁵ km.
Learn more about scientific notation, here:
https://brainly.com/question/18073768
#SPJ5
How many atoms is in one mole of glucose?
There are 6 atoms in one mole of gulcose.
35. A line graph uses_ on the x-axis
a. categories
b. time
C. dependent variable
d. control group
Can someone plz help me? :(
Answer:
b
Explanation:
Is a mixture of stones?
homogeneous or heterogeneous
Answer:
Heterogeneous mixture because it is not soluble and in non uniform texture.
What is the density of an object if it’s mass is 88.69g and it’s volume is 24.5mL?
what happens when tin II chloride is reacted with iron III sulphate
Answer:
it changes from Lower temperature to higher temperature
Name 2 different types of microorganisms that live or on your body.
Answer:
Your body is chock full of microorganisms, including bacteria, fungi, archaea and viruses. Altogether, there are ten times more microbes in your body than there are human cells.
Explanation:
Answer:
Germs and bacteria. They can be found on the surface of our skin.
If you have 48 ounces of eggs, how many dozens of eggs do you have?
How would you find the mass of an object from its density and volume ?
Answer:
Mass= volume x density
Explanation:
Multiply the density by the volume.
What is the tool used for measuring volume?
Answer:
Liquid volume is usually measured using either a graduated cylinder or a buret. As the name implies, a graduated cylinder is a cylindrical glass or plastic tube sealed at one end, with a calibrated scale etched (or marked) on the outside wall.
R indicates round seeds that are dominant over the wrinkled variety, represented by r. For each numbered individual in the pedigree give the genotype and phenotype.
Answer:what grade this is
Explanation:
Use the information from the diagram to calculate the enthalpy of combustion for methane.
(IGNORE MY ANSWER PLZ I ACCIDENTALLY CLICKED IT)
SOMEBODY PLZ HELP ME I REALLY NEED IT PLZZZZZZZZ
Answer:
The answer is A) -604KJ
Explanation:
I just took the Penn Foster test. =D you welcome!
CAN SOMEONE PLEASE HELP ME OUT !!!
Answer:
133242535455555555555555
Explanation:
Express the following numbers in their expanded forms
2.24 x 10⁵
1.5 x 10‐⁹
6.55 x 10‐¹
9 x 10³
A skateboarder moving at 2 m/s starts skating down a ramp. As the skateboarder heads down the ramp, he accelerates to a speed of 6 m/s in 4sec onds. What is the skateboarder’s acceleration?
Answer:
1 meter per second is acceleration
When sugar is heated on a hot plate, it turns into a liquid. When the liquid sugar is
cooled, a hard-crystalline substance is formed. This model BEST demonstrates the
formation of
photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy.
PLZ I NEED THIS ASAP!! ILL GIVE YOU BRAINLIST!!!
Answer:
6) gary suffering from slimotosis
7) duration of rubbing seaweed/drinking dr. kelp
8) whether slimotosis gets cured or not
9) rubbing seaweed and drinking dr. kelp cures slimotosis
Explanation:
Calculate the volume of an object with dimensions measuring: 3.0cm x 4.0cm x 1.0cm
Answer:
12cm^3
Explanation:
Just multiply each of the given dimension.
= 3.0 × 4.0 × 1.0
= 3 × 4 × 1
= 12
Answer:
12cm cubed
Just multiply 3, 4, and 1
What's larger centimeter or meter?
Answer:
A meter is 100 times larger then a centimeter
Why Farmers kill the silkworm inside the cocoon .
Answer:
It allows the completion of the metamorphosis of the silkworm to its moth stage, whereas most silk harvesting requires the silkworms to be killed in their cocoon stage. No animals suffer or die for the silk to be produced, making it a favorable alternative to normal silk for those who do not believe in harming animals.
How do i calculate moles to atoms/atoms to moles?
Answer:
To convert from moles to atoms, multiply the molar amount by Avogadro's number. To convert from atoms to moles, divide the atom amount by Avogadro's number (or multiply by its reciprocal).
Explanation:
