Answer:
The answer is a
Explanation:
1. How are atoms held together? What is the attraction between?
Answer:
the atom is held together by the electrostatic attraction between the positively charged nucleus and the negatively charged electrons surrounding it, the stability within chemical bonds is also due to electrostatic attractions.
Explanation:
Answer:
Some type of bond (example: hydrogen bonds between water)
Polarity can also hold atoms together
hope this Helped!
How plants affect weathering?
Plants can grow in between rocks and break apart into smaller pieces.
Plants can prevent water from eroding rocks.
Plants can prevent wind from eroding rocks.
Plants can move rocks into smaller pieces.
Answer:
plants can grow in between rocks and break apart into smaller pieces
Explanation:
What do you think is the primary reason why the Unionid mussel population declined whenever there is a dramatic increase in the Zebra mussel population?
Answer:
When the Zebra arrived they ate all the food so the Unionid mussels declined as they died from the lack of food. Causing the Zebra Zebra numbers to increase and Unionid numbers to decline.
HELP ME WILL MARK BRAINIEST
Zinc reacts with lead (II) nitrate to produce zinc nitrate and lead. This reactions is:
Word form?
Answer:
Displacement Reaction
Explanation:
Zinc replaces lead in Lead(ll) nitrate as zinc is more reactive than lead.
Which is the correct formula for the ionic compound that results from these two atoms? PLS HELP!!!
Answer:
If I am not wrong is C x2y5
Explanation:
The concept of valency is used here to determine the formula of the ionic compounds. The number of valence electrons in 'X' is 2 and that of 'Y' is 5. The formula is X₃Y₂. The correct option is D.
What is an ionic compound?The crystalline solids which are formed by neatly packed ions of opposite charges are defined as the ionic compounds. These compounds are formed by the combination of metals with non-metals.
The combining capacity of an element is given by valency. The elements belonging to the same group have the same valency. It is related to how many electrons are in the outer shell.
Here the number of valence electrons in 'X' = 2
The number of valence electrons in 'Y' = 5
The element 'X' need 6 electrons to attain the octet and 'Y' needs 3 electrons to attain the octet.
X - 6
Y - 3
The formula of the ionic compound is X₃Y₂.
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What’s the answer???
Answer:
Well I know that the first one is true.
Explanation:
Answer:
1. TRUE
2. FALSE
3. C
Explanation:
2NaHCO3 + 3CaCl2 → CaCO3 + 2NaCl + H2O + CO2
Which statement is true about the equation above?
There are 3 chlorines on the reactant side and 3 chlorines on the product side of this equation.
There are 3 chlorines on the reactant side and 3 chlorines on the product side of this equation.
There are 3 calciums on the reactant side and 2 calciums on the product side of this equation.
There are 3 calciums on the reactant side and 2 calciums on the product side of this equation.
There are the same number of oxygen atoms in the reactants and the products. There are the same number of oxygen atoms in the reactants and the products.
This equation does not follow the law of conservation of mass.
Answer:
There are the same number of oxygen atoms in the reactants and the products
Explanation:
However the equation is not balanced
3 Ca on one side and 1 on the other
Las reacciones de adición son... 2 reactivos producen 2 productos nuevos 2 reactivos producen un solo producto 1 reactivos produce 2 productos El reactivo es una sustancia carbonada y O2
Answer:
Las reacciones de adición son... 2 reactivos producen un solo producto.
Explanation:
Las reacciones de síntesis o combinación ocurren cuando dos o más reactivos forman un solo producto; generalmente se libera calor, siendo reacción exotérmica. También se les conoce como reacciones de adición.
En otras palabras, las reacciones de adición son aquellas en las cuales todos los átomos de los reactivos van a formar parte de un único producto. Uno de los reactivos (al que se le suele llamar sustrato) debe contener un enlace doble, o uno triple. Las Reacciones de Adición se dan principalmente en Química Orgánica donde los dobles y triples enlaces son comunes.
La característica principal de estas reacciones es que durante el proceso, el doble o triple enlace se rompe formando nuevos enlaces.
Las reacciones de adición son... 2 reactivos producen un solo producto.
What happens to the number of valence electrons as you move from element 1 to element 18 on the periodic table?
A)the number of valence electrons decreases
B)the number of valence electrons decreases then increases in a predictable sequence
C)the number of valence electrons increases
D)the number of valence electrons increases then decreases in a predictable sequence
Answer:
C
Explanation:
Answer: The answer is C
Explanation:
how do we know that all the continents were all together at one point in time. writing prompt and it has to be at least 7 sentences
Answer:
We can tell by how the continents look. Scientists who propose the pangea theory have said this. You can see for yourself because all the continents look like puzzle pieces you could put together. Scientists can also tell from the species. For example, let's say a scientist found a bone of a creature at the edge of a continent, the edge of another would have the same species. They have also calculated that the continents in itself are still splitting apart, but very slowly. The reason they split up was because tectonic plate movements.
What’s the answer????
Answer:
1. C
2. A
3. A
Explanation:
i'll give brainliest
You live near the ocean and your friend lives further inland. Based on this, what can you say is most likely different about the climate in your area from your friend's area in the winter?
Your friend has colder winters than you do.
Your friend has warmer winters than you do.
You have less precipitation than your friend does.
You get more sunshine in the winter.
Answer:
I'm thinking its "Your friend had colder winters than you do."
Explanation:
It is not "Your friend has warmer winters than you do." Or "You Have less precipitation than your friend does." I was doing this quiz before that had this question and its not those.
In the ocean side the the winter will be colder by the ocean breeze in the day time. The location of your friend farther from the ocean will have warmer winters than you.
What is sea breeze ?Any wind that flows from a big body of water onto or onto a landmass is called a sea breeze or an onshore breeze. Sea breezes form as a result of changes in air pressure brought on by the different heat capacities of water and dry land. Sea breezes are therefore more confined than prevailing winds.
A sea breeze is frequently seen along coasts after sunrise because land warms up far more quickly than water does when exposed to solar radiation. While dry ground also cools faster than water, a land breeze or offshore breeze has the opposite effect.
In winter seasons, along with the sea breeze make the climate more colder than that in locations farther from oceans. Hence, option b is correct.
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write an Argument for people of westfield identifying the reddish brown substance. Plz answer this is due tomorrow!!
Answer:
The reddish-brown substance is a different color than the fertilizer, which is white, and the substance that makes up the pipe, which is gray. This means that they cannot be the same substance because they do not have the same properties. The atomic models show that the reddish-brown substance is made up of different repeating groups of atoms than the fertilizer and the pipe substance. The difference in atoms caused the difference in properties.
Explanation:
lul
People of westfield identifying the reddish brown substance and that substance is rust i.e. iron oxide.
What is rust?Rust is a chemical compound which is formed by the oxidation reaction between iron and oxygen for the formation of iron oxide.
People of westfield observed the reddish brown color in the water, that is the rust compound which is obtained by the chemical reaction occur between the iron pipes and the compound present in the fertilizers that are present in water.
Hence, the reddish brown substance in rust.
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please tell me answers I am given you brainliest
Answer:
1 = one
2 = fluorine
3 = Bromine
4 = increase
5 = first increaseas and then decreases
hope it helps
If excess sodium sulfate react with 36 g of iron (III) phosphate and produce a 65.0% yield of sodium phosphate, how many grams of sodium phosphate are actually produced?
[tex]Na_2SO_4 + FePO_4[/tex] -> [tex]Na_3PO_4 + Fe_2(SO_4)_3[/tex]
Answer:
According to the stoichiometry, the theoretical yield is 11.5 grams. Multiplying this by 0.650, you get 7.48 grams.
Explanation:
7. Cecilia puts two magnetic toy trains very close to each other on a track. What will happen next, and
why.
How much energy does a wave with a frequency of 7.0 x 1012 Hz have
Answer:
4.64 × 10⁻²¹ J/s
Explanation:
[Only if the wave travels at the speed of light]
Because a wave presumed to be at light speed is a photon, E = hf.
If frequency is not given, E = hc/λ
c is the speed of light in meters per second. c = 299, 792, 458 m/s.
λ is the wavelength which is dependent.
h or plancks constant = 6.62607004 × 10⁻³² m² kg / s.
E is in units of J / s or jules ( m² kg ) per second.
If the wave has a frequency of 7.0 x 10¹² Hz or 7 THz (Tera-Hertz).
E = (6.62607004 × 10⁻³⁴) × (7.0 × 10¹²) =
46.38249028 × 10⁻²² =
4.638249028 × 10⁻²¹ J/s ≈
4.64 × 10⁻²¹ J/s
How many molecules are there in 3.20 grams of NH4SO2
Answer:
0.0389757845886336
Explanation:
Passenger airplanes take off in the troposphere but can eventually move into
the stratosphere. The planes may remain in the stratosphere until it is time to
land. Why do you think planes fly in the stratosphere?
How can you tell if two objects are in thermal equilibrium?
The objects have the same temperature.
The objects are touching each other.
The objects' temperatures are changing.
The objects are the same size.
Answer:
Two objects are in thermal equilibrium if they are in close contact that allows either to gain energy from the other.
Answer: The Objects have the same temperature
Explanation: i just took the test
how to round the decimal 4.15 to the hundredths place?
Answer:4.15 is already in the hundreths place so you are good!
if it was 4.155 then you would round it to 4.16 but its NOT that so the answer IS 4.15
Explanation:
PLEASE ANSWER ALL I WILL GIVE BRAINLIEST PLEASE!!
name the following compound Mol2
Answer:
you cant answer this
Explanation:
you left something out of the question
An alloy of sodium and potassium is used as a coolant due to its
A.high thermal conductivity
B.physical state
C.high reactivity
D.all except c
Answer:
A
Explanation:
Because It's dense meaning that it doesn't burn
Explanation:
https://youtu.be/f_kgUUaMZlw
is cobalt magnetic or no
Answer:
yes, it is a magnetic material
it can be attracted by a magnet
hope it helps
Answer:
yes ut is magnetic because it is metals
What are high tides caused by
Answer: the moons gravitational force
Explanation:
Which is a common way for a scientific calculator to show the number
below?
3*109
O A. 93
B. 9 * 103
C. 9E3
D. 3E9
Answer:
it can show it using the B method am i right
PLEASE HELP ILL DO WHATEVER Bryan is doing a triathlon and you need to calculate his average speed for all three events. He swims 1km in 0.4 hrs. He rides his bike 50km in 1.5hrs and he runs 10km in 0.7 hrs.
Answer:
toda
Explanation:
:todo lo que tienes que hacer es hacer la cosa
Answer:
16.6km/h
Explanation:
Speed is distance/time.
speed for 1st event = 1/0.4 = 2.5km/h
speed for 2nd event = 50/1.5 = 33.3 km/h
speed for 3rd event = 10/0.7 = 14.28 km/h
Average speed = 2.5 + 33.3 + 14.28 /3 = 50/3 = 16.6 km/h
How many moles each element are in a mole of methane?
[tex] \large \mathcal{ANSWER}[/tex]
This means that the mass of one methane molecule is 12.011 u + (4 × 1.008u), or 16.043 u. This means that one mole of methane has a mass of 16.043 grams. A mole can be thought of as two bags of different sized balls. One bag contains 3 tennis balls and the other 3 footballs.
Samples of helium (He), nitrogen (N 2 ), and methane (CH 4 ) are at STP. Each contains 1 mole or 6.02 × 10 23 particles. However, the mass of each gas is different and corresponds to the molar mass of that gas: 4.00 g/mol for He, 28.0 g/mol for N 2 , and 16.0 g/mol for CH 4 .