Answer:
6.38
Explanation:
line up the decimals
it helps to add another 0 to 2.6 so that you can align them better
1
2.60
+ 3.78
= 6.38
8 + 0 = 8
6 + 7 = 13; write 3 and carry the one over above the 2 in 2.60
2 + 3 + 1 = 6
I tried my best to show it through text.
Can you determine the equation for density?
Answer:
YESBSJSKSSKEKEJRJRJER
30 g of pineapple added to a drink the drink rises 5 ml what is the density of the pineapple
Answer:
Density of pineapple is 6 g/mL.
Explanation:
Given data:
Mass of pineapple = 30 g
Volume rises = 5 mL
Density of pineapple = ?
Solution:
Density:
Density is equal to the mass of substance divided by its volume.
The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.
Units:
SI unit of density is Kg/m3.
Other units are given below,
g/cm3, g/mL , kg/L
Formula:
D=m/v
D= density
m=mass
V=volume
The volume rises by drink is actually the volume of pineapple.
d = 30 g/ 5 mL
d = 6 g/mL
Density of pineapple is 6 g/mL.
Something used to represent a complex idea or process in science is a what
Answer:
a model?
Explanation:
im not sure! i think so
Answer:
Yes, It is a model
Explanation:
A complex idea or a process can be demonstarated by using a Model because you can see things easier and its basically a copy of anything from forests to volcanoes but smaller to make it easier to see.
Hope This Helps
Which field is not a branch of biology
Botany
Geology
Zoology
Genetics
Answer:
Geology
Explanation:
Geology is not a branch of biology.
Biology is the study of all forms of lives. Bio - life and logy - study
It consists of studies of plants, animals and micro-organisms. Some of its sub-branches are zoology, botany, genetics, micro-biology e.t.c.
Geology is the study of the earth. It deals with the materials that makes up the earth and how they have evolved through time. some of its sub-disciplines are hydro-geology, stratigraphy, geochemistry e.t.cAnswer:
geology
Explanation: I took the test.
If you include structures in which sulfur has an expanded octet and exclude structures with triple bonds, how many resonance structures can be drawn for sulfur trioxide, SO3
Answer:
Seven
Explanation:
SO3 has a trigonal planar structure. The most apt bonding description is that of sulphur forming three sigma bonds giving rise to the plane triangle and then the presence of three delocalized pi bonds.
Plausible resonance structures for SO3 has been shown in the image attached. In all the structures, there is none in which sulphur is pictured as having triple bonds.
image credit: socratic
what do you mean by the region or space that an electron revolves the nucleus in an atom?
An atomic orbital is a mathematical feature describing the region and wave-like behavior of an electron in an atom. This characteristic can be used to calculate the opportunity of finding any electron of an atom in any precise location across the atom's nucleus.
What's the vicinity of space in which there's a high opportunity of locating an electron?An atomic orbital is regularly idea of as a location of space wherein there is an excessive opportunity of finding an electron. Every energy level corresponds to an orbital of a one-of-a-kind form, which describes wherein the electron is probable to be observed.
Learn more about atomic orbital here: https://brainly.com/question/20319149
#SPJ2
step of the scientific method reviews your original question and your hypothesis.
results
observation
conclusion
experiment
Answer: conclusion
Explanation:
It say reviews your original question and your hypothesis
Answer:
conclusion!
Explanation:
Juan measures a piece of metal and determines it has a mass of 10 grams and a volume of 2 ml
What is the density of the piece of metal?
Answer:
The answer is 5.0 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 10 g
volume = 2 mL
We have
[tex]density = \frac{10}{2} \\ [/tex]
We have the final answer as
5.0 g/mLHope this helps you
Answer:
5.0 g/mL
Explanation:
Pepsi
Vinegar
Orange Juice
What property do all three of these common household substances have in common?
A)
They are all acidic.
B)
They all taste bitter.
C)
They all have a pH above 7.
D)
They all turn litmus paper blue.
Answer:
A) They are all acidic.
Explanation:
All 3 of those have acidic qualities in the drink.
Answer:
They are all acidic
Explanat
What body of water is south of Constantinople? Atlantic Ocean Indus River Black Sea Mediterranean Sea
what is the formula for calcium bisulfate
Answer:
the formula
Explanation:
The reaction between methanol and oxygen gas produces water vapor and carbon dioxide. 2CH3OH(l)+3O2(g)⟶4H2O(g)+2CO2(g) Three sealed flasks contain different amounts of methanol and oxygen. Based on the molecular view of the three flasks, which would produce the largest quantity of total product? The flask contains 3 molecules of C H 3 O H and 3 molecules of O 2. The flask contains 1 molecule of C H 3 O H and 6 molecules of O 2. The flask contains 4 molecules of C H 3 O H and 2 molecule of O 2. For the flask which produces the largest quantity of total product, how many molecules of H2O will be formed? molecules of H2O :
Answer:
The flask that produces the largest quantity of product is the second flask
The molecules of H 2 O formed is [tex]X = 8 \ molecules [/tex]
Explanation:
From the question we are told that
The reaction is
2CH3OH(l) + 3O2(g)⟶4H2O(g)+2CO2(g)
The first flask contains 3 molecules of C H 3 O H and 3 molecules of O 2
The second flask contains 1 molecule of C H 3 O H and 6 molecules of O 2
The third flask contains 4 molecules of C H 3 O H and 2 molecule of O 2.
Looking at the three flasks we can see that base on molecular view the flask which produces the largest quantity of total product is second flask
From the balanced equation we see that 2 moles of C H 3 O H are required to react with 3 moles of oxygen hence O 2 is the limiting reactant
Generally 1 mole of any substance is [tex]1 * N_A[/tex] of that substance
Here [tex]N_A[/tex] is the Avogadro number with the value [tex]N_A = 6.02214076 * 10^{23} \ molecules[/tex]
So
Looking at the balanced equation we see that 3 moles of O 2 (3 * [tex]N_A[/tex] molecules of O 2 ) produces 4 moles of H2O(4 *
Then 6 molecules of O 2 will produce X molecules of H 2 O
So
[tex]X = \frac{6 * (4 * N_A }{3 * N_A}[/tex]
=> [tex]X = 8 \ molecules [/tex]
What is the mass of a single atom, which is approximately equal to the total mass of the protons and neutrons in an atom called?
Answer:
Mass number or relative atomic mass number.
Insoluble molecular compounds break apart into atoms when added to water.
True
O False
Answer:
False.
This is false because, no chemical reaction could possibly happen.
But in case of sodium it is highly reactive with water.......... so there will be a chemical reaction.
but as sodium is not a insoluble molecular compound this is not applicable to the situation.
Students want to gather evidence for the claim that the number of atoms present before a chemical reaction is equal to the number of atoms present after the chemical reaction. They decide to react vinegar and baking soda in a sealed plastic bag. Which of the following would provide evidence the students need
Answer:
The mass of the plastic bag, baking soda, and vinegar before the reaction was equal to the mass after the reaction.
Explanation:
The two main postulates that was given by Antoine Lavoisier are, oxygen play an important role in combustion and the other is mass of the reactant and product is conserved. Therefore, the reaction shows the law of conservation of mass.
What is law of conservation of mass?According to Law of conservation of mass, mass can neither be created nor be destroyed. Mass can only be transformed from one form to another. The law of conservation of mass was given by Antoine Lavoisier.
Every reaction in nature follow the law given by Antoine Lavoisier that is mass is always conserved. The mass of the plastic bag, baking soda, and vinegar before the reaction was equal to the mass after the reaction.
Therefore, the reaction shows the law of conservation of mass.
To know more about law of conservation of mass, here:
https://brainly.com/question/28711001
#SPJ2
