Answer:
Terrestrial Planets
Explanation:
Terrestrial planets are made up of rocks. They are all solid, dense and rocky in nature.
There are four known terrestrial planets which are Mercury, Venus, Earth and Mars.
These planets are orbits round the Sun in an elliptical orbital.
The other planets in the solar system are the gaseous planets. They are otherwise called gas giants.They are predominantly made up of gases. They are Jupiter, Saturn, Uranus and NeptuneThe Gas giants are also called outer planets.
Which of the following IS NOT an ionic compound?
A) C2H5OH
B) KCI
C) Mg3N2
D) MnO2
why was the turtle shy at the party?
Answer:
Because he likes someone named shelly?
Along with maintaining structure and reproduction, what is the third item that all living things face as a challenge? Question 3 options: How to socialize appropriately How to social distance effectively How to get enough sleep. How to get enough energy for daily life
Answer:
So the answer is gonna be how to get enough energy for your daily life
Explanation:
Sometimes the human body cant get enough energy from the food and protein the food gives out.
And two or more complete sentences explain how to balance the chemical equation and classify its reaction type.
__H3PO4 + __NaBr —> __HBr + ___Na3PO4
Answer:
H₃PO₄ + 3NaBr → 3HBr + Na₃PO₄
Explanation:
The unbalanced reaction expression is given as:
H₃PO₄ + NaBr → HBr + Na₃PO₄
We need to balance the expression.
Let us assign variable a, b, c and d and solve mathematically;
aH₃PO₄ + bNaBr → cHBr + dNa₃PO₄
Conserving H : 3a = c
P: a = d
O : 4a = 4d
Na: b = 3d
Br: b = c
Let a = 1, c = 3, d = 1, b = 3
So:
H₃PO₄ + 3NaBr → 3HBr + Na₃PO₄
what kind of oxide is formed when a piece of sodium is dropped in the water
Answer:
Sodium oxide is the product
Explanation:
4Na+O2->2Na2O
based on the balanced equation: 2 K + Cl2 --> 2KCl what is the mole ratio of K to KCl
Answer:
2 : 2
Explanation:
The balanced chemical equation is given as:
2K + Cl₂ → 2KCl
From the balanced reaction equation, we can conclude that;
2 moles of K will react with 1 mole of Cl₂ 2 moles of K will produce 2 moles of KCl 1 mole of Cl₂ will produce 2 moles of KClTherefore, the mole ratio is 2:2 or 1:1 in the simplest form.
Describe the paper
chromatography in short.
Answer:
Paper chromatography, in analytical chemistry, technique for separating dissolved chemical substances by taking advantage of their different rates of migration across sheets of paper. It is an inexpensive but powerful analytical tool that requires very small quantities of material.
Explanation:
Hope it is helpful....
Which of these is an example of genetic variation?
A. Two lizards are fighting and one loses its tail.
B. Bacteria reproduce asexually and produce two clones.
C. Two sisters are born with brown hair and one dyes their hair blonde.
D. In butterflies, some are born with more dark colored spots than others.
Answer:
D. in butterflies, some are born with more dark colored spots than others.
Explanation:
hope this helps my friend
Do you know this Ca(NO2)2 ? It's not calcium nitrate
Answer:
The answer is, in fact, Calcium Nitrate. I even looked it up to make sure, and according to PubChem, it is Calcium Nitrate. I suggest asking your teacher what this question is trying to ask because if it says it is not Calcium Nitrate, someone got it wrong.
Explanation:
The only other name I can think of, though, is Calcium Dinitrite.
What happens to the energy when you heat the iron? Why is this happening?
Answer:
When iron is heated in air it reacts with oxygen to form the compound iron oxide. Iron is a solid and oxygen is a gas. 5 Draw diagrams to show how the atoms are arranged in iron, oxygen and iron oxide in the circles below their names. Use different colours for the iron atoms and the oxygen atoms.
Explanation:
The pictures below show samples of different substances.
The mass and volume of each sample differ from the mass and volume of the other samples. Is it possible for each sample to contain 1 mol of each substance?
A. No, because they have different masses.
B. No, because they have different volumes.
C. Yes, if each sample contains 6.02 x 1023 atoms.
D. Yes, if each sample contains 2 amu.
Answer:
C. Yes, if each sample contains 6.02 x 10²³ atoms.
Explanation:
It is possible for each sample to contain 1 mole of each sample if and only if each of the sample if made up of 6.02 x 10²³ atoms.
6.02 x 10²³ atoms is the Avogadro's number. This number is equivalent to a mole of a substance.
If the amount of matter in the given substance is at least one mole, it is possible that they are made up of one mole each of each substance. If they contain lesser amount of atoms, then it is not up to one mole of substance. But if it is greater, then, we can have even more than one mole of substance.A mole is simply a unit of measurement and it is equivalent to 6.02 x 10²³ atoms.
Answer:
Answer: C (Yes, if each sample contains 6.02 x 1023 atoms.) for all the edge speed runners ;)
Explanation:
Got it right on the test review edge 2022
How can we separate a homogenous mixture (a solution)? For example, how can we separate salt that has been dissolved in water?
Answer:
Well, to separate salt from water, you would stir the two together to create a homogenous mixture. Then you would boil the mixture; all the water would evaporate, leaving behind the salt
Explanation:
Which list of features describes an economy based on free enterprise?
government control of trade, laws that favor business, labor guilds
government ownership of factories, law that favor workers, limited trade with other countries
no government intervention, law of supply and demand, open trade with other countries
some government intervention, minimum wage laws, price setting
Answer:
no government intervention, law of supply and demand, open trade with other countries
Explanation:
A free enterprise system is an economy that is free from any type of government intervention.
Also, I took the quiz :)
To calculate acceleration you must know both the objects velocity and _______________ 1pt
Answer:
i think its speed
Explanation:
Answer:
Velocety and mass
Explanation:
WILL MARK BRAINLIEST
*please answer correctly*
I’ve been stuck on this question for a while so I’d appreciate it
Nucleus Nucleus Atom 1 Atorn 2 Nucleus Nucleus Atom 3 Atom 4 Which two atoms are of elements in the same group in the periodic table?
Explanation:
The atoms of elements on the same period on the periodic table typically have the same number of valence electrons.
They have the same electronic configuration.
Valence electrons are electrons in the outermost shell of an atom.
The number of electrons in an atom is a good indicator of elements that might potentially belong to the same group.
The amount of matter in a given amount of volume is referred to as
A. Weight
B. Mass
C. Density
D. Volume^2
Answer:
It would be Density because:
Density= mass/ volume
Density refers to the amount of matter or mass of a substance over a volume
In continuing to think about the rock cycle, we know the phases can take thousands, even millions of years to occur. Which stage in the cycle can happen in mere hours or days?
a. Lithification and Erosion
b. Heat and pressure
C. Compaction and weathering
d. Cooling & Crystallization
Answer:
d. Cooling & Crystallization
Explanation:
One of the stages of the rock cycle that can take place under mere hours or days is cooling and crystallization.
Cooling and crystallization of lava on the earth surface is a very rapid and fast process.
When magma from within the earth reaches the surface, it becomes lava. Due to the nature of the surface, it cools rapidly and very fast to form very fine grained igneous rocks.
Balance the following Equation:
___Zn + ___HCl --> ___ZnCl2 + ___H2
50g of zinc are reacted with 50g of hydrogen chloride. What is the limiting reactant?
Group of answer choices
HCl
ZnCl2
Zn
H2
Answer:
HCl
Explanation:
Given data:
Mass of Zn = 50 g
Mass of HCl = 50 g
Limiting reactant = ?
Solution:
Chemical equation:
Zn + 2HCl → ZnCl₂ + H₂
Number of moles of Zn:
Number of moles = mass / molar mass
Number of moles = 50 g/ 65.38 g/mol
Number of moles = 0.76 mol
Number of moles of HCl:
Number of moles = mass / molar mass
Number of moles = 50 g/ 36.5 g/mol
Number of moles = 1.4 mol
Now we will compare the moles of Reactant with product.
Zn : ZnCl₂
1 : 1
0.76 : 0.76
Zn : H₂
1 : 1
0.76 : 0.76
HCl : ZnCl₂
2 : 1
1.4 : 1/2×1.4 = 0.7
HCl : H₂
2 : 1
1.4 : 1/2×1.4 = 0.7
Less number of moles of product are formed by HCl it will act limiting reactant.
HELP PLEASEEEEEEEE HELPPPPPPP (IMAGE)
Question 1 options:
solid
liquid
gas
Question 2 options:
solid
liquid
gas
Question 3 options:
solid
liquid
gas
Complete the Lewis structures for diazine (C5H4N2) showing the two most common resonance forms. Draw the Lewis structures with the formal charges minimized.
Answer:
See explanation and image attached
Explanation:
Lewis structures dot structures that show the number of valence electron in a molecule. Sometimes, we show bonded electrons using a single line as in the image attached.
Two images are shown. They are the both resonance structures of diazene. The both structures only differ in the arrangement of electrons as we can see from the image.
Which statement best explains how the gases of the atmosphere affect the temperature of Earth?
A
The gases reflect all of the heat from the Sun, preventing it from reaching Earth's surface.
B
The gases absorb all of the heat from Earth's surface, preventing it from radiating into space.
С
The gases absorb some of the heat from the Sun, holding it to keep it warm near Earth's surface.
D
The gases reflect some of the heat from Earth's surface, holding it away from the surface in space.
Answer: The answer is c
Explanation:
The gases absorb some of the heat from the Sun, holding it to keep it warm near Earth's surface. Hence option C is correct.
What is atmosphere?Atmosphere is defined as a layer of gas that surrounds a planet and is kept there by the gravitational pull of the planetary body. The atmosphere of the earth shields its people by absorbing dangerous sun rays and preserving a constant temperature. It protects Earth from many space hazards and enables life there. As a result, it is crucial for regulating climate and a source of life on planet.
The majority of the infrared energy from the Sun is absorbed and re-emitted in all directions by greenhouse gas molecules and clouds, creating the greenhouse effect. This causes the lower atmosphere and the Earth's surface to warm.
Thus, the gases absorb some of the heat from the Sun, holding it to keep it warm near Earth's surface. Hence option C is correct.
To learn more about atmosphere, refer to the link below:
https://brainly.com/question/26767532
#SPJ2
Select the correct answer.
What is the formula of the compound vanadium(V) oxide? Use the list of polyatomic ions and the periodic table to help you answer.
A.
VO2
B.
VO5
C.
V5O2
D.
V2O5
E.
V2O2
Answer:
Vanadium(V) oxide is the inorganic compound with the formula V2O5. Commonly known as vanadium pentoxide,
Explanation:
then it is answer D
How much Ag can be produced if one is given 64 g of Ag2O?
mass Ag = 59.5 g
Further explanationGiven
64 g of Ag2O
Required
Mass of Ag
Solution
Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements
mass of Ag in Ag2O :
= ((2 x Ar Ag)/molar mass Ag2O )x mass Ag2O
[tex]\tt mass~Ag=\dfrac{2.Ar~Ag}{MW~Ag_2O}\times mass~Ag_2O[/tex]
Ar Ag : 107,8682 g/mol
MW Ag₂O = 231,735 g/mol
Input the value :
mass Ag = ( (2 x 107,8682 g/mol )/ 231.735) x 64 g
mass Ag = 59.5 g
Or we can use reaction
2Ag₂O ⇒ 4Ag + O₂
mol Ag₂O :
= 64 : 231.735
= 0.276
mol Ag :
= 4/2 x moles Ag₂O
= 4/2 x 0.276
= 0.552
mass Ag :
= 0.552 x 107,8682 g/mol
= 59.54 g
I WILL GIVE YOU BRAINLY PLSS!!! :(
Budding is a form of ______________ reproduction in which a new ______________
develops from a bud or outgrowth due to _________ division. The new organism remains
attached as it grows, separating from the ___________________ only when it is mature.
3. Vegetative reproduction is a form of _____________ reproduction in ___________ .
It is a process by which new organisms are produced without _______________ or
_______________ . It can occur naturally or be induced by ______________________ .
Answer:
Budding is a type of asexual reproduction in which a new organism develops from an outgrowth or bud due to cell division at one particular site.
Explanation:
Answer:
Budding is a type of asexual reproduction in which a new organism develops from an outgrowth or bud due to cell division at one particular site.
Explanation:
How many moles are in 9.63 x 10^22 atoms of Ar?
Answer:
0.16 moles of Ar
Explanation:
One mole is equal to 6.022×10^23 atoms
9.63 x 10^22 atoms * 1 mol/6.022×10^23 atoms = 0.15991364995 moles
What happens to the charge if a nonmetal
takes two valence electrons?
Answer:
if a non-metal takes two valence electrons then it get negatively charged to form ion.
Answer:
The nonmetal will gain a negative charge of magnitude 2
Explanation:
X be the nonmetal
On gaining two electrons
X^2-
Answer answer answer answer answer answer answer
Answer:
if she did it immediately and then weighed it all it would b
Explanation:
Answer:
The answer is B
I saw this question in class today
Explanation:
The sum of 4.824 + 2.03 + 4.72319 + 123.4567 + 111.1 expressed to the
proper number of significant figures is
Answer:
246.13389
Explanation:
Simplify the expression.
1. Look up bromine on the periodic table. What is the most common isotope of bromine?
Answer:
The most common isotope is Bromine-79.
Explanation: