Answer:
Explanation:
1. Mercury’s atmosphere is incredibly thin.
It's thin because the atmosphere is made up of atoms blasted off its surface by the Solar wind and also consist of the stream particles coming from the outer layer of the sun
2. The length of a mercury year is about 1.5 times longer than a mercury a day.
Mercury revolves around the sun very quickly but rotates around its axis very very slowly
3.The temperature range on Mercury is about 590 °C.
During the day, temperatures on Mercury's surface can reach Very High But, the planet has no atmosphere to retain that heat
2AgF(aq)+Na2CO3(aq)=Ag2CO3(s)+2NaF(aq) net ionic equation
The net ionic equation is applied mainly in neutralization reactions, double displacement reactions and redox reactions. Therefore, the net ionic equation is Ag⁺(aq)+CO[tex]_3[/tex]²⁻(aq) [tex]\rightarrow[/tex]Ag[tex]_2[/tex]CO[tex]_3[/tex](s).
What is net ionic equation?
The net ionic equation represents a chemical equation of a reaction that give an idea of species that are really participating in the reaction. We can write net ionic equations for those electrolyte which are strong in water.
The balanced net ionic equation is
2AgF(aq)+Na[tex]_2[/tex]CO[tex]_3[/tex](aq)[tex]\rightarrow[/tex]Ag[tex]_2[/tex]CO[tex]_3[/tex](s)+2NaF(aq)
Ag⁺(aq) +F⁻(aq) +Na⁺(aq) +CO[tex]_3[/tex]²⁻(aq) [tex]\rightarrow[/tex]Ag[tex]_2[/tex]CO[tex]_3[/tex](s)+Na⁺(aq) +F⁻(aq)
Ag⁺(aq)+CO[tex]_3[/tex]²⁻(aq) [tex]\rightarrow[/tex]Ag[tex]_2[/tex]CO[tex]_3[/tex](s)
The net ionic equation cancels out ions that appear on both sides of the reaction arrow because they essentially don't participate in the reaction of interest.
Therefore, the net ionic equation is Ag⁺(aq)+CO[tex]_3[/tex]²⁻(aq) [tex]\rightarrow[/tex]Ag[tex]_2[/tex]CO[tex]_3[/tex](s).
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HELP HELP HELP HELP HELP HELP HELP HELP HELP
Answer:
3
Explanation:
I got this i am very smart
Answer:
The answer is 3) same mass more volume
Explanation:
Mass measures the amount of matter in a substance or an object.
Volume measures the amount of space that a substance or an object takes up.
4. Which of the following statements
about homeostasis is NOT true?
A Maintaining homeostasis requires that all
of the body systems work together.
B Long periods of stress can disrupt
homeostasis.
C Body temperature is a factor of
homeostasis.
D Only the nervous and endocrine systems
are involved in maintaining homeostasis.
Answer: Only the nervous and endocrine systems are involved in maintaining homeostasis.
Explanation: Hope this helped you
D. Only the nervous and endocrine systems are involved in maintaining homeostasis.
Living systems maintain homeostasis, which is defined as a state of constant internal, physical, and chemical conditions. This is a state of optimal functioning for the organism in which several variables, such as body temperature and fluid balance, are maintained within pre-determined boundaries.All of the body's systems must operate together to maintain homeostasis.Long periods of stress can cause homeostasis to be disrupted.Homeostasis is influenced by body temperature.Statement that is incorrect about homeostasis is "D. Only the nervous and endocrine systems are involved in maintaining homeostasis."For more information:
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Question 20 (2 points)
Much of the water that falls on the ground as precipitation
enters the ground through the process of infiltration
evaporates back into the atmosphere
becomes runoff and finds its way back to the ocean
forms small pools
Answer:
becomes runoff and finds its way back to the ocean
Explanation:
Precipitation refers to rainfall that reaches the earth.
Most of the rainfall that reaches the earth becomes runoff and finds its way back to the ocean.
When the rain falls on earth, some evaporates, some enters into the ground while some runs off into rivers and streams. Almost all of the rain water flows into the oceans or other bodies of water.
Hence, most of the rainfall that reaches the earth becomes runoff and finds its way back to the ocean
The atomic number of an element configuration 2,8, 8,2,13
Answer:
33
Explanation:
The atomic number of an element configuration 2,8, 8,2,13 is 33.
The electron configuration is defined as the arrangement of electrons in atomic or molecular orbitals of an atom. The sum of electrons in different orbitals shown in the electron configuration represents the atomic number of the atom.
So, atomic number of the element configuration 2,8, 8,2,13 is 33.
Unit 2 Test
What makes up all of the populations in an area?
they
O Niche
Habitat
Ecosystem
Community
how does weathering affect earths surface
as it breaks down the surface , it reshapes it
I need help plz help me
Answer:
A
Explanation:
Classify the waves as longitudinal or transverse.
Answer:
the bell is longitudinal
the secound one is transverse
third is longitudinal
the fourth is transverse
Explanation:
i got it right on my mastery test
Name the molecule when potassium reacts with chlorine?
Answer: Potassium Chloride
Explanation:
How many grams of NaOH do you need to dissolve to make 1.55 Liters of a 1.55 Molar solution?
Answer:
Mass = 96g
Explanation:
Molarity = number of moles/volume of solvent
According to the provided information, volume = 1.55L, Molarity = 1.55M
number of moles (n) = molarity × volume
n = 1.55 × 1.55
n = 2.4025
n = 2.40mol
For NaOH, molar mass = 23 + 16 + 1 = 40g/mol
mole = mass/molar mass
Mass = molar mass × mole
Mass = 40 × 2.40
Mass = 96g
(i) CH2=CH-CH2-CH=CH,
Give IUPAC name of the compound.
Answer:
The IUPAC name of CH3 – CH2 – CH2 – CH=CH2 is Pent-1-ene.
(NH4)3P is it Ionic or Molecular??
Answer: It is molecular
Explanation: The reason it is molecular is because it has no ions in the formula it only has the molecular mass which is the reason why it is in fact molecular
PLEASE HELP! ILL GIVE BRAINLIEST, EXPLAIN YOUR ANSWER PLS
Answer:
arteries carry blood from the heart to the lungs and veins carry blood from the lungs to the heart
Explanation:
Arteries carry oxygenated blood from the heart, while veins carry oxygen-depleted blood back to the heart. ... The pulmonary veins transport oxygenated blood back to the heart from the lungs, while the pulmonary arteries move deoxygenated blood from the heart to the lungs.)
Which of the following pairs of elements will form covalent bonds with each other?
Answer:
sorry I don't know so sorry so sorry so sorry so sorry so sorry so
Explanation:
so sorry I don't know so sorry so sorry so sorry maybe I think quotation ki and bro mind we are
if you are using 657.0 grams of oxygen gas to react with calcium how many gram of calcium oxide will u product
Answer:
The amount in grams of CaO that will be produced is 2,302.67824 grams
Explanation:
The reaction between calcium and oxygen to produce calcium oxide (quicklime) can be presented as follows;
2Ca (s) + O₂ (g) → 2CaO (s)
From the above chemical equation, we have;
2 moles of calcium, Ca, react with 1 mole of oxygen gas, O₂, to produce 2 moles of CaO
With the assumption that there is an excess amount of Ca, we have;
The molar mass of O₂ = 32 g/mol
The number of moles, 'n', of O₂ in 657.0 grams of oxygen is therefore;
The number of moles of a substance = Mass of substance/(Molar mass of substance)
∴ n = 657.0 g/(32 g/mol) = 20.53125 moles
The number of moles of O₂ in the 657.0 grams of oxygen present in the reaction, n = 20.53125 moles
1 mole of O₂ produces 2 moles of CaO, therefore, 20.53125 moles of oxygen will produce 2 × 20.53125 or 41.0625 moles of CaO
The molar mass of CaO = 56.0774 g/mol
Therefore, the mass of 41.0625 moles of CaO is given as follows;
Mass of substance = (The number of moles of a substance) × (Molar mass of substance)
The mass of CaO produced = 41.0625 moles × 56.0774 g/mol = 2,302.67824 g.
a primary substance that cannot be divided into separate substances; one of about 112 different basic varieties of matter making up the universe
Answer:
No you can not divide a primary substance into a seperat one because ot wpuld be like divideing the universe
How many grams are there in 3.4 x 10^24 atoms of He?
Group of answer choices
2.07
5.7 g
0.57 g
20.7
Given :
Number of He atoms, [tex]n = 3.4\times 10^{24}[/tex] atoms.
To Find :
How many grams are their in given number of He atoms.
Solution :
We know, molecular mass of He is 4 g. It means that their are [tex]6.022 \times 10^{23}[/tex] atoms in 4 g of He.
Let, number of gram He in [tex]3.4\times 10^{24}[/tex] atoms is x , so :
[tex]x = \dfrac{3.4\times 10^{24}}{6.022\times 10^{23}}\times 4\\\\x = $$22.58\ g[/tex]
Therefore, grams of He atoms is 22.58 g .
1 point
If the element Lithium (Li) were to bond with the element Sulfur (s), what
type of bond can you predict will be formed and why?*
A. Covalent-Li and S are two nonmetals
B. Covalent-Li is a metal and S is a nonmetal
C. Ionic-Li and S are two nonmetals
D. Ionic-Li is a metal and S is a nonmetal
Answer:
C. Ionic-Li and S are two nonmetals
Which types of changes must follow the law of conservation of mass?
Both physical and chemical changes
Neither physical nor chemical changes
Only physical changes
Only chemical changes
Answer: both
Explanation:
A chemical process used to produce ethanol as a fuel additive was expected to produce 5,000 kilograms of ethanol based on the amounts of starting materials used, but only 4,760 kilograms were produced. What was the percent yield for ethanol in this process? A)1.09 percent B)4.80 percent C)95.2 percent D)105 percent
Answer:
The percent yield for ethanol in this process is 95.2%
Explanation:
Yield is the ratio between the amount of product actually obtained in the reaction and the maximum amount of product that could have been obtained if the reagents had been completely consumed.
The theoretical yield is the yield is the maximum you can get in a reaction.
On the other hand, the actual performance shows what you really get in experimentation. It is generally less than the theoretical yield.
So, the percentage return is the actual return times the theoretical return multiplied by 100.
So, in this case the percentage yield will be calculated as:
[tex]percent yield=\frac{4,760 kg}{5,000 kg} *100[/tex]
percent yield= 95.2%
The percent yield for ethanol in this process is 95.2%
anybody knows the answers
Answer:
Metal is a better conductor than plastic so its going to absorb any cooler temperatures while the plastic stays the same.
Explanation:
Iron is a mineral. A nail made out of iron
a mineral.
Answers:
Is also
Is not
Answer:
is also
Explanation:
if iron is a mineral then a nail is a mineral to
A __________________ chemical equation shows that the same number of atoms in the reactants are also in the product.
balanced
rearranged
transferred
beautiful
How does evaporation lead to precipitation
Answer:
1.evaperation
2.condenstation
3.precipatation
Explanation:
So I guess condenstation leads to precipatation-
Answer:
Evaporation is when water/liquids changes state from a liquid to a gas. Which eventually with enough water water vapor (which is what forms when water evaporates), it turns into clouds. But when the clouds get too heavy and full of water. Rain/precipitation falls from those clouds.
-Hope this helps!
Explanation:
write the balanced equation for the formation of carbon dioxide.
Which volume is the greatest?
Microliter
Milliliter
Deciliter
Centiliter
Answer:
Deciliter = 0.1 L
Explanation:
The options are unit of volume. In order to determine which is greatest, all the options would be converted to liter.
Microliter = 1e-6 L
Mililiter = 0.001 L
Deciliter = 0.1 L
Centiliter = 0.01 L
Among all the options; Deciliter = 0.1 L is the greatest.
Two steps that the factory manger can take to make the factory more carbon neutral are to and to
If 1 g of radium-226 has an activity of 1 curie, what is the activity of 2 g of radium-226? 1 curie 2 curies 4 curies 10 curies
Answer:
2 curies
Explanation:
This is actually pretty easy to explain.
The Radium-226 which is an isotope of the radium, have an activity of curie. This is basically used in radioactivity of certain elements.
As in both cases we have Radium -226 and we are only varying the mass of the Radium, then, we can just do a rule of 3 to calculate this:
1 g Ra-226 --------> 1 Curie
2 g Ra-226 --------> X Curie
Solving for X:
X = 2 g * 1 Curie / 1 g
X = 2 Curies.You can also see this by taking 2 grams of Ra per separate. On one side you have 1 g of Ra-226 and on the other side, you have another 1 g of Ra-226. Both have 1 Cury of activity. If you put both on the same side, you will have 1 Cury of 1 isotope plus 1 cury of the other isotope, final result? 2 curies.
Hope this helps
Calculate the number of moles in 2.67 g of carbon trihydride
Answer:0.178 moles
Explanation: carbon trihydride seems to be an unusual name for the methyl group CH3–
ionic wt 15
moles = 2.67/15 = 0.178