Answers
Answer:
the signifigant figures would be 5
Explanation:
branilest pleass
Related Questions
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
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
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 ..........................................
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♥
a kilogram of lead occupies a much smaller volume than a kilogram of water, because_____ has a much higher density
Answers
Answer:
lead
Explanation:
As we know the formula
[tex]\boxed{\sf Density=\dfrac{Mass}{Volume}}[/tex]
[tex]\\ \sf\longmapsto Volume=\dfrac{Mass}{Density}[/tex]
Hence object having less density occupy higher volumewhat are elements?????
Answers
An element is a substance that cannot be broken down into any other substance.
I hope this answer helps you..
Which of the following correctly
describes a physical change in
matter?
A. matter keeps its chemical makeup, but a
change in size, shape, volume, or state of matter
occurs
B. particles leave and a new substance is made
C. a new substance is formed by atoms
combining in different ways
Answers
Answer:
the option A is right matter keeps it's chemical makeup like size shape volume and state
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.
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.
The radioactive elements used in nuclear
power plants are plutonium and
A thoriun B. tritium C. radon
D. radium E. uranium
Answers
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!
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."
Please help due at 11:00
Answers
You are given 2 balls that are made of the same material. They are also the same size and color. One is hollow and one is solid. Determine the physical property that could be used to identify the ball as a solid.
Group of answer choices
boiling point
solubility
pH
density
Answers
Answer:density
Explanation:
it’s how’s how dens the ball is
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
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!!
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 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]
What subatomic particle is in constant movement around the nucleus forming a cloud like appearance
Answers
Answer:
Electron
Explanation:
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
Answers
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
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.
Someone plz help me :(
Answers
Answer:
b. the development of new vaccine prevents disease from spreading
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.
A rectangular object measures 3 cm x 2 cm x 1 cm and it has a mass of 4 g. What is the density of
this rectangular object?
Answers
Answer:
Density of the rectangular object = 4 / 6 = 0.67g/cm³
Explanation:
First find the volume of the rectangular object.
Volume of the rectangular object = 3 x 2 x 1 = 6cm³.
Density of an object = mass of the object / volume of the object
Therefore,
Density of the rectangular object = 4 / 6 = 0.67g/cm³
How many micrograms (ug)
are equal to 0.000520 grams?
[?] ug
Answers
Answer:
520
Explanation:
This is easy
Gimme ur bath water plzzzz
Answers
Answer:
plzz can you explain in detail this Q
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]
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)
Q. Calculate the number of atoms in each of the following (i) 52 moles of Ar (ii) 52 u of He (iii) 52 g of He
Answers
The number of atoms will be 3.131 x [tex]10^{25}[/tex], 7.8286 x [tex]10^{24[/tex], and 7.8286 x [tex]10^{24[/tex] atoms respectively.
Number of atomsThere are 6.022 x [tex]10^{23}[/tex] atoms in 1 mole of every substance.
52 moles of Ar will contain 52 x 6.022 x [tex]10^{23}[/tex] = 3.131 x [tex]10^{25}[/tex] atoms
52 u of He = 52/4 = 13 moles of He.
13 moles of he = 13 x 6.022 x [tex]10^{23}[/tex] = 7.8286 x [tex]10^{24[/tex] atoms
52 g of He = 52/4 = 13 moles of He.
13 moles of he = 13 x 6.022 x [tex]10^{23}[/tex] = 7.8286 x [tex]10^{24[/tex] atoms
More on number of atoms can be found here: https://brainly.com/question/8834373
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1. The number of atoms in 52 mole of Ar is 3.13×10²⁵ atoms
2. The number of atoms in 52 u of He is 7.83×10²⁴ atoms
3. The number of atoms in 52 g of He is 7.83×10²⁴ atoms
Avogadro's hypothesis1 mole of substance = 6.02×10²³ atoms
1. How to determine the number of atoms in 52 mole of Ar1 mole of Ar = 6.02×10²³ atoms
Therefore,
52 mole of Ar = 52 × 6.02×10²³
52 mole of Ar = 3.13×10²⁵ atoms
2. How to determine the number of atoms in 52 u of He4 u of He = 1 mole
Thus,
52 u of He = 52 / 4
52 u of He = 13 moles
From Avogadro's hypothesis,
1 mole of He = 6.02×10²³ atoms
Therefore,
13 moles of He = 13 × 6.02×10²³
13 moles of He = 7.83×10²⁴ atoms
Thus,
52 u of He = 7.83×10²⁴ atoms
3. How to determine the number of atoms in 52 g of He4 g of He = 1 mole
Thus,
52 g of He = 52 / 4
52 g of He = 13 moles
From Avogadro's hypothesis,
1 mole of He = 6.02×10²³ atoms
Therefore,
13 moles of He = 13 × 6.02×10²³
13 moles of He = 7.83×10²⁴ atoms
Thus,
52 g of He = 7.83×10²⁴ atoms
Learn more about Avogadro's number:
https://brainly.com/question/26141731
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