which model of the atom is most accurate?
Answer:
it's the electron cloud model
How is heat transferred through space
Heat is transferred by energy waves moving through space. Explanation: According to research: Radiation is the transfer of heat energy through space by electromagnetic radiation. Most of the electromagnetic radiation that comes to the earth from the sun is invisible
Please give brainiest if possible, I kinda need it. Thnx!
Answer:
the transfer of energy through space is called radiation. through radiation there is no direct contact between heat source and object. sunlight radiation warms the earth's surface; radiation can also come from fires.
which one is you fav one
Answer:
the 3rd one
Explanation:
Someone please help I don't know if my answers are correct for this
Answer:
Your correct it is false
(04.05 LC) In which of the following forms is carbon present in the atmosphere? Carbon dioxide Glucose Oil Water vapor
Answer:
Carbon dioxide
Explanation:
that's all I can say
Matter changes phase by:
1.particle interaction
2.particles moving closer or further away from one another
3.particles moving faster or slower
4.heat being added or released
Answer: 4.heat being added or released
A 1.0-mole sample of potassium mass is?
Answer:
Here is your ans
Explanation:
potassium mass is 39.0983u
Tq
The half-life of cobalt-69 is 6 years. How much of a 5-gram sample is left after 12 years
Answer:
that was wrong my bad. just delete my answer
Explanation:
how much time will it take a car traveling at an average of 75 mph to go a distance of 225 miles
Time taken = 3 hours
Further explanationGiven
speed : 75 mph
distance : 225 miles
Required
time taken
Solution
An equation of constant velocity motion
[tex]\large {\boxed {\bold {d = v \times \: t}}}[/tex]
d = distance = m
v = speed = m / s
t = time = seconds
Input the value :
t = d : v
t = 225 miles : 75 miles/hour
t = 3 hours
A 100 kg rock is broken into five smaller rocks for a garden. What is the total mass of all five smaller rocks?
Answer:
100 kg
Explanation:
you cannot destory mass so, it's going to be the same just broken up pieces
For the following elements (Group 1A), Li, Na, K, Rb), which atom is larger overall?
Answer:
The smallest atom you have listed would be lithium (Li).
Explanation:
Lithium is the third smallest atom listed on the periodic table of the elements. It has an atomic number of three, meaning it has three protons in it's nucleus.
Atom size (Atomic radius) increases from UP to DOWN in the same COLUMN(group) of the periodic table. For example, in the first group, the Atomic radius trend from smallest to greatest is: H (smallest) -- Li -- Na -- K -- Rb -- Cs -- Fr (greatest).
Reason is, the increasing energy level (increases from n=1 to n=7) causes the shielding effect increase dramatically. And since the size of atom is mostly consist of electrons, more energy level is filled, the larger the atom will be.)
However, in the same ROW from left to right, the atomic size decreases as the number increases. For example, Li #3, is larger than Flourine (F) with an atomic number 9 because they are on the same ROW.
The ISS experiences ___ of Earth’s gravity.
90%
10%
75%
50%
Answer:
90%
Explanation:
Which of the following organisms would NOT be in the first trophic level of an energy pyramid?
A. dog
B. tree
C. algae
D. grass
The dog would not be in the part of first trophic level of an energy pyramid.
What is energy pyramid?Energy pyramid is defined as a model that show the flow of energy from one tropic or feeding level to next tropic or feeding level in an ecosystem.
There are basically three energy pyramid.
Pyramid of numberPyramid of biomassPyramid of energyTrophic level is defined as the source based on their nutrition or food, organisms occupy a specific place in a food chain.
First trophic level contains only green plants and producers. Their plants and product where consumed by second level of organisms.
Thus, the dog would not be in the part of first trophic level of an energy pyramid.
To learn more about energy pyramid, refer to the link below:
https://brainly.com/question/2837831
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In the equation CH4 + 2O2 --> 2H2O + CO2 What is the mass of CO2 produced when 35g of O2 reacts?
Answer:
24.06 g of CO₂
Explanation:
The balanced equation for the reaction is given below:
CH₄ + 2O₂ —> 2H₂O + CO₂
Next, we shall determine the mass of O₂ that reacted and the mass of CO₂ produced from the balanced equation. This can be obtained as follow:
Molar mass of O₂ = 2 × 16 = 32 g/mol
Mass of O₂ from the balanced equation = 2 × 32 = 64 g
Molar mass of CO₂ = 12 + (2×16)
= 12 + 32
= 44 g/mol
Mass of CO₂ from the balanced equation = 1 × 44 = 44 g
SUMMARY:
From the balanced equation above,
64 g of O₂ reacted to produce 44 g of CO₂.
Finally, we shall determine the mass of CO₂ produced by the reaction of 35 g of O₂. This can be obtained as follow:
From the balanced equation above,
64 g of O₂ reacted to produce 44 g of CO₂.
Therefore, 35 g of O₂ will react to produce = (35 × 44)/64 = 24.06 g of CO₂.
Thus, 24.06 g of CO₂ were produced from the reaction.
Write Lewis dot structures for each of the following molecules. Use VSEPR to determine the shape of each molecule. Use electronegativity values to determine the polarity of each molecule.
PH3
CHCl3
H2CO
XeCl4
PBr5
TeF4
ICl5
BF3
KrF2
SO3
my question is butterfly emerges
What types of inputs and outputs do these cell systems share
Answer:
The inputs of cellular respiration are glucose and oxygen. The outputs of cellular respiration are water, carbon dioxide
The input of cell systems share are glucose and oxygen. The output of cell systems share are carbon dioxide, energy and water.
What is a cell ?The smallest unit that can sustain life on its own and makes up all living things, including the body's tissues. The cell membrane, the nucleus, and the cytoplasm are the three primary components of a cell. The chemicals that enter and leave the cell are governed by the cell membrane, which encloses the cell.
The cell membrane, the nucleus, and the cytoplasm are the three components that make up a cell. Intricate arrangements of microscopic fibers and hundreds or even thousands of tiny, unique structures known as organelles can be found in the cytoplasm.
The system's inputs are the signals or data it receives, and its outputs are the signals or data it sends. As part of an activity, the phrase can also be employed; for example, to "perform I/O" is to carry out an input or output operation.
Thus, The input of cell systems share are glucose and oxygen. The output of cell systems share are carbon dioxide, energy and water.
To learn more about cell, follow the link;
https://brainly.com/question/3142913
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After which reaction. is there solid left in the reaction chamber
a)Sodium Azide
b)Ammonium Nitrate
c)Nitroglycerin
d)Both A & B
Answer:
B.
Explanation:
If we add more SO2 gas to the reaction chamber. To the left. The reaction would drive
backwards to re-establish equilibrium (more reactants made).
Will give brainliest if correct
Based on what you have observed in the Gizmo, which of the following chemical equations represents photosynthesis?
A. Carbon dioxide plus water yields glucose (sugar) and oxygen.
B. Oxygen plus carbon dioxide yields water and glucose.
C. Glucose plus oxygen yields carbon dioxide and water.
D. Water plus glucose yields oxygen and carbon dioxide.
Answer:
A.....
Explanation:
Carbon dioxide plus water yields glucose (sugar) and oxygen.
Describe how PERIODS and GROUPS are set up on the Periodic Table of Elements.
Answer:
Periods are horizontal rows (across) the periodic table, while groups are vertical columns (down) the table. Atomic number increases as you move down a group or across a period.
(Love your pfp btw)
Explanation:
There have been made 2 attempts of oxygen production by potassium permanganate.In the first attempt they have got 75ml oxygen in 3 minutes whearas there have been got 100ml in 5 minutes by the 2nd attempt.In what case the speed of the oxygen production is bigger???
Pls explain your answer
Answer:
The speed of oxygen production is bigger in the first attempt.
Explanation:
In the first attempt, since 75ml oxygen is produced in 3 minutes, the rate of oxygen production is r = volume of oxygen/time = 75 ml/3 min = 25 ml//min
In the second attempt, since 100ml oxygen is produced in 5 minutes, the rate of oxygen production is r' = volume of oxygen/time = 100 ml/5 min = 20 ml//min
Since r = 25 ml/min > r' = 20 ml/min, the speed of oxygen production is bigger in the first attempt.
Boron carbonate decomposes into boron oxide and carbon dioxide, how many moles of carbon dioxide are produced when 5.0 mol of boron carbonate decomposes completely?
Write the formula: carbon hexabromide
Answer: C2Br6
Explanation:
The door to the classroom weighs 3 kg. How much work is done when Michael pushes on
the door to the classroom with 15 Newtons of force, pushing the door 1.3 meters?
Work done : 19.5 J
Further explanationGiven
F = 15 N
d = 1.3 m
m = 3 kg
Required
Work done
Solution
Work is the product of force with the displacement of objects.
Can be formulated
W = F x d
W = Work, J, Nm
F = Force, N
d = distance, m
Input the value :
W = 15 N x 1.3 m
W = 19.5 J
the mass has no effect on this problem
Can you help me please?
Answer:
A. the light subatomic.... is correct answer
What would be the mass of 3 moles of water molecules?
a
54 grams
b 40 grams
C
30 grams
d 20 grams
Answer:
[tex]\boxed {\boxed {\sf A. \ 54 \ grams }}[/tex]
Explanation:
To convert from moles to grams, we must use the molar mass.
Recall that water's molecular formula is H₂O. It contains hydrogen and oxygen. Look up the two elements masses on the Periodic Table.
Hydrogen (H): 1.008 g/mol Oxygen (O): 15.999 g/molNow, use these masses to find water's mass. The subscript of 2 tells us there are 2 atoms of hydrogen, so we multiply hydrogen's mass by 2 and add oxygen's.
H₂O= 2(1.008 g/mol) + 15.999 g/mol = 18.015 g/molUse the molar mass as a ratio.
[tex]\frac{18.015 \ g \ H_2 O}{ 1 \ mol \ H_2 O}[/tex]
Multiply by the given number of moles.
[tex]3 \ mol \ H_2O*\frac{18.015 \ g \ H_2 O}{ 1 \ mol \ H_2 O}[/tex]
The moles of water will cancel.
[tex]3 *\frac{18.015 \ g \ H_2 O}{ 1 }[/tex]
[tex]3 *{18.015 \ g \ H_2 O}[/tex]
[tex]54.045 \ g \ H_2O[/tex]
Round to the nearest whole number. The 0 in the tenth place tells us to leave the number as is.
[tex]54 \ g \ H_2O[/tex]
There are about 54 grams of water in 3 moles.
Answer:
54 grams
Explanation:
First step is to find what one mole of water is in grams.
Water is H2O so that means we have two moles of Hydrogen.
H - 2 grams (on periodic table)
We have one mole of Oxygen.
O - 16 grams (on periodic table)
Add 2 and 16 to get 18 total grams in one molecule of H2O
Now multiply 3 times 18 to know how many grams in 3 moles of H2O
You end with
3x18=54 grams
does a high melting point mean the substance will melt faster or slower?
Answer:
slower...............
.
..
Answer:
it'll melt slower
Explanation:
because it needs to get to a higher temperature ig
Which state or states of matter have fixed volume but not a fixed shape?
Answer:
gas and liquid
Explanation:
research the Greenhouse effect and how it relates to heat transfer.
Answer:
The greenhouse effect is a phenomenon of radiative transfer, the process by which the energy of light waves is exchanged in matter. Radiative transfer dictates what energy is reflected, absorbed, and emitted. The greenhouse effect: A summary of the heat transfer in the Earth's atmosphere
Explanation:
trust me i have a huge brain and access to the internet
what are the steps to naming simple ionic compounds
Answer:
To name an ionic compound, you simply need to find the names of the cation and anion present in the compound and make sure to revise the ends of metal names as needed. First, write out the name of the metal, followed by the name of the non-metal with its new ending.
Explanation:
Write the name of the cation, and then write the name of the anion, changing the ending to "-ide" if it's a single element and leaving it as it is if it's a polyatomic ion.
What happens to the average kinetic energy at a constant temperature? *
1.it increases
2.it decreases
3.it stays the same
4.it disappears