Answers
Related Questions
Any material that exerts magnetic force is considered a magnet true or false?
Answers
Answer:
Any material that exerts magnetic force is considered a magnet.
TRUE
what is a big plants
In the world
who can say
I want a answer
Answers
Answer:
Jupiter
Explanation:
Fifth in line from the sun, Jupiter is, by far, the largest planet in the solar system.
please help asap....will mark brainliest
a compound is made up of 56.34% oxygen and phosphorus.state the empirical formula and name the compound
Answers
Answer:
An interesting way to approach this problem is to determine the oxide's molecular formula first, then backtrack and find its empirical formula.
So, you know that this oxide of phosphorus has a molar mass of
284 g mol
−
1
. This tells you that one mole of this oxide has a mass of
284 g
.
You also know that the oxide has a percent composition of
43.66
%
phosphorus and
56.34%
oxygen.
This means that every
100 g
of oxide will contain
43.66 g
→
phosphorus,
P
56.34 g
→
oxygen,
O
Pick a
284-g
sample of this oxide, which will be equivalent to one mole, and determine how many moles of each constituent element it contains. This will get you the compound's molecular formula.
So, you can say that this sample will contain
284
g oxide
⋅
43.66 g P
100
g oxide
=
123.994 g P
284
g oxide
⋅
56.34 g O
100
g oxide
=
160.006 g O
Use the molar masses of the two elements to convert the masses to moles
For P:
123.994
g
⋅
1 mole P
30.9738
g
=
4.003
≈
4 moles P
For O:
160.006
g
⋅
1 mole O
15.9994
g
=
10.001
≈
10 moles O
Since this is how many moles of phosphorus and oxygen you get in one mole of the oxide, it follows that its molecular formula will be
molecular formula
=
∣
∣
∣
∣
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
a
a
P
4
O
10
a
a
∣
∣
−−−−−−−−−−
→
phosphorus pentoxide
To find the empirical formula, all you have to do is rewrite the
4
:
10
mole ratio that exists between the two elements in its smallest whole number form.
In this case, you can say that
4
:
10
⇔
2
:
5
This means that the empirical formula will be
empirical formula
=
∣
∣
∣
∣
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
a
a
P
2
O
5
a
a
∣
∣
−−−−−−−−−
Identify the statements that are correct. Check all that apply. View Available Hint(s)for Part A The mass ratio of oxygen to carbon in CO is twice the mass ratio of oxygen to carbon in CO2. For two compounds of C and O, the mass ratio of C to O in one compound is a multiple of the mass ratio of C to O in the other compound or can be converted to a small whole number ratio. The mass ratio of oxygen to carbon in CO2 is 2.667 for every sample of CO2. The mass ratio of oxygen to carbon in CO is 1.33 for every sample of CO.
Answers
The correct statement is; For two compounds of C and O, the mass ratio of C to O in one compound is a multiple of the mass ratio of C to O in the other compound or can be converted to a small whole number ratio.
According to the law of multiple proportions, if two elements say, A and B combine to form more than one chemical compound; the various masses of one element, A, which combine with a fixed mass of the other element B are in simple ratio.
This means that, if there are two compounds of elements like C and O (as in CO and CO2), the mass ratio of C to O in one compound is a multiple of the mass ratio of C to O in the other compound or can be converted to a small whole number ratio.
Learn more; https://brainly.com/question/11378529
Match the parts of the skeletal system with its level of organization.
1. Thigh bone
2. living cell
3. Bones cells working together
4. All the bones, cartilage, and ligaments
To:
A. Organ system
B. Organ
C. Tissue
D. Cell
Answers
Hi, these are the answers:-
Thigh bone → Organ
Living cell → Cell
Bone cells working together→ Tissue
All the bones, cartilages and ligaments→ Organ System
Hope it helps you...
Pls mark brainliest if it helps you...
(Answered by Benjemin)
A ball hits a wall. What is true about the magnitude of the force experienced by the ball compared with the force experienced by the wall?
ОА.
The ball experiences more force than the wall.
OB. The ball experiences less force than the wall.
O c.
The ball and the wall experience the same force.
OD
The ball experiences half the force of the wall.
Answers
According to Newton's 3rd Law of motion, each force has an equal and opposite reaction force. Although this concept is sometimes confused because people often mistake force for the action of the ball and wall after the collision. Of course, the ball will bounce back and the wall will stay still, but that has to do with collisions, not the force on the objects. So the answer is C.
I.Molten Nacl conducts electricity due to the presence a
a-free electrons
b. free ions
c. Free molecules .
d. Atoms of sodiium and chloride.
Answers
Answer:
Hello! Your answer would be BELOW
Explanation:
So a molten salt powers electricity. Hence, molten sodium chloride conducts electricity due to the presence of free ions. So, the correct answer is option D. Atoms of sodium and chloride.
Hope I helped! Hope you make an 100%
-Amelia♥
Gimme ur bath water plzzzz
Answers
Answer:
plzz can you explain in detail this Q
Dante loves taking care of the chickens on his farm. He feeds them rice everyday. His Grandma told him that he should feed them corn everyday instead of rice because it will make them grow fatter.
He decides to do an experiment to test what type of food will make his chickens fatter. Before the experiment, the chickens weigh an average of 5 pounds. David makes two groups of chickens. He feeds Group A rice everyday, and feeds Group B corn everyday. After one month, David weighs the chickens to see if they gained any weight. Group A weighs an average of 5 pounds and group B weighs an average of 7 pounds. What is the test variable (independent variable) in this experiment? *
Answers
Answer:
The independent variable in this experiment is what he feeds the chickens (rice or corn).
Explanation:
The independent variable is the variable the experimenter manipulates or changes.
What method of measuring volume of these objects would be most accurate and why?
Answers
Answer:
where are the object
Explanation:
can you have a look at your question
How many micrograms (ug)
are equal to 0.000520 grams?
[?] ug
Answers
Answer:
520
Explanation:
This is easy
Where Would It Fall?
Six friends were talking about asteroids and meteorites that
could fall to the Earth. The friends wondered where an object
from space would most likely fall. This is what they said:
Maya:
“I think it has the greatest chance of landing in
a desert."
Elsa:
"I think it is most apt to land where humans are living."
Walter:
"I think it will most likely land in an ocean."
Mac:
"I think it will probably land on an ice-covered area."
Amber:
"Chances are it will land on the largest continent."
Evan:
"Most likely it will land in a body of freshwater."
Which person do you most agree with? Explain your reasons for where you think a
large object from space would most likely fall
Answers
Answer: Walter: On the Ocean
Explanation: Oceans cover 71% of Earth. Chances are 71% it will land with a salty splash.
Convert 355 degrees C to K.
Answers
Answer: 628.15 K
Explanation:
Add 273.15 to any temperature in Celsius to get it in kelvin
Pls helllllpppppp!!!!!
how was the interior of the atom was experimentally dicovered?
Answers
Answer:
Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson's plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged "soup."
32. List three examples of substances. Explain why each
is a substance. (3.1)
Answers
Answer: Chemical X H3 and f1
Explanation:
This is my cookie >:( you cannot have it
(Also the question of the cookie is it homogeneous or heterogeneous? DONT EAT IT [its mine])
Answers
prove that the liquid pressure is directly proportional to the depth of the liquid?
Answers
Explanation:
Pressure and depth have a directly proportional relationship. This is due to the greater column of water that pushes down on an object submersed.. so the deeper the liquid level the higher the pressure of the liquid.
Someone plz help me :(
Answers
Answer:
b. the development of new vaccine prevents disease from spreading
NEED IT ASAP
1) Plants need water for______in order to make food. water is needed more for _____, to maintain body temperature and transport nutrients.
Answers
Answer:
Hi Lovelys!!
Answer down below!!
Explanation:
Answer: Plants need water for photosynthesis in order to make food. Water is needed more for cooling, to maintain body temperature and transport nutrients.
Reason: Plants need water for photosynthesis. Water also helps move nutrients from the soil into the plant. Too little water can cause a plant to wilt or droop. Too much water can cause a plant's roots to rot. Plants are about 80-95% water and need water for multiple reasons as they grow including for photosynthesis, for cooling, and to transport minerals and nutrients from the soil and into the plant.
Hope this helps!! =3
Have a wonderful day, evening, or night!!
Why is ice melting considered to be a PHYSICAL change?
A. the water molecules do not change chemically and are still H2O
B. the water molecules change into new chemicals and are no longer H2O
C. They are chemically mixed and won’t for H2O
D. They will just be the same liquid (already did this and it wasn’t it)
Answers
Answer:
A. the water molecules do not change chemically and are still H2O
Explanation:
The arrangement of molecules is the only change that occurs
[tex].[/tex]
True or False:
If a chemical is used in a chemical reaction as a reactant but no
products are formed and nothing changes about the chemical,
it is safe to assume it has no chemical properties.
Answers
Answer:
i think true ..........................................
The speed of sound through air is approximately 343 m/s. What is the speed in
miles per hour? 1 ft = 0.3048 m; 1 mile = 5280 feet
Answers
Answer:
343m/s= 767.26...mph
Explanation:
First we convert meters to feet.
343m = 1125.32ft
Next, we convert feet to miles.
1125.32ft = 0.2131288 miles
Finally, we convert 0.2131288 miles per second into mph. Since there's 3600 seconds in an hour, we multiply 0.2131288 by 3600.
0.2131288 x 3600 = 767.26368...
I hope this helps!
Your friend's pet hamster weighs 152 grams on Earth. If that hamster traveled to space, what is its weight and why? Answer in complete sentences,
Answers
Answer:
force of gravity 1.2 N
Explanation:
dont know for sure but here's what I got
compound 1 contains 15.0g of hydrogen and 120.0g oxygen. What is the percent compound of each element?
Answers
Note down the formula below
[tex]\boxed{\sf Mass\%\;of\; element=\dfrac{Mass\:of\:the\: element}{Mass\;of\:the\: compound}\times 100}[/tex]
Mass of the compound
[tex]\\ \sf\longmapsto 15+120=135g[/tex]
Mass % of Hydrogen:-
[tex]\\ \sf\longmapsto \dfrac{15}{135}\times 100[/tex]
[tex]\\ \sf\longmapsto \dfrac{1}{9}\times 100[/tex]
[tex]\\ \sf\longmapsto 11.1\%[/tex]
Mass % of Oxygen:-
[tex]\\ \sf\longmapsto \dfrac{120}{135}\times 100[/tex]
[tex]\\ \sf\longmapsto \dfrac{8}{9}\times 100[/tex]
[tex]\\ \sf\longmapsto 88.9\%[/tex]
A scientist is working in a lab and accidentally combines two liquids that quickly form a solution. Which process could be used to separate the two liquids?
Answers
Answer:
Distillation
Explanation:
The method of distillation can be used to separate the two liquids, if their boiling point is known. The liquid with lower boiling point will be evaporated and its vapours will be captured, while the liquid with higher boiling point will remail in the container in the liquid state.
The process that could be used to separate the two liquids is heating the liquids and letting one boil away first. The correct option is A.
What is liquid?The liquid is one of the states of matter. The liquid has molecules that are nearer than gas. The liquid does not have a specific shape and size. They acquire the shape of the container in which they are poured.
When the liquid is boiling and the molecules of the liquid convert into vapor. The molecules of liquid go far away from each other. When the temperature increased, boiling happened. The process will be heating the liquids and letting one boil away first.
Thus, the correct option is A. heating the liquids and letting one boil away first.
To learn more about liquid, refer to the link:
https://brainly.com/question/16650179
#SPJ2
The question is incomplete. Your most probably complete question is given below:
heating the liquids and letting one boil away first
passing the liquids through a filter to collect one of them
collecting one of the liquids with a spoon
waiting for the two liquids to separate
What is the formula mass of a compound with 2 aluminum atoms and 3 oxygen atoms?
Answers
Answer:
[tex]\boxed {\boxed {\sf 101.96 \ amu}}[/tex]
Explanation:
Formula mass is the sum of the atomic masses of the atoms in a molecule. Essentially, it is the mass of 1 molecule of a compound.
We are given a compound containing 2 aluminum atoms and 3 oxygen atoms. We will use the Periodic Table to look up the atomic masses of the 2 elements in the compound.
Al: 26.981538 amuO: 15.999 amuThese are the atomic masses of 1 atom of the element. Remember we have 2 Al atoms and 3 O atoms. We multiply the element's atomic mass by the number of atoms of that element in the compound.
2 Al: 26.981538 amu *2= 53.963076 amu 3 O: 15.999 amu * 3=47.997 amuNow we add the atomic mass of 2 Al atoms and 3 O atoms.
53.963076 amu + 47.997 amu = 101.960076 amuWe may want to round this answer to the hundredth place. The 0 in the thousandth place tells us to leave the 6 in the hundredth place.
101.96 amuThe formula mass of a compound with 2 aluminum atoms and 3 oxygen atoms is approximately 101.96 atomic mass units.
When two atoms of element Y combine, Y2 molecule is formed.
What is the type of bond formed? Fill in the blanks, how it is formed.
(i) The type of bond formed is________ bond.
(ii) A Y atom has______outer electrons.
(iii) It needs____more electron to attain a stable_____electronic
configuration.
(iv) A Y atom shares____of its
____electrons with another Y atom.
Answers
Answer:
chemical bond
Explanation:
because this is the only bond used in chemical reactions just like molecules of atoms are combined by this bond
What subatomic particle is in constant movement around the nucleus forming a cloud like appearance
Answers
Answer:
Electron
Explanation:
what is the pH if H+ = 4.0 times 10 to the power of negative 8
Answers
Answer:
[tex]pH = - log[H {}^{ + } ] \\ pH = - log(4.0 \times {10}^{ - 8} ) \\ { \boxed{ \boxed{pH = 7.4}}}[/tex]
Atoms are bonded together due to the mixing of atomic orbitals to create mixed or hybrid orbitals. This is an example of a(n)?
a. problem
b. law
c. theory
d. experiment
