Answer:
They mix together to form a new compound
Explanation:
I hope its correct if not I'm sorry!
What is the lowest energy level that contains d orbitals?
O A. 4
O B. 3
O C. 2
D. 1
Answer:
I believe it 3
I need help with this one question
Answer:
colder
Explanation:
If you have 40.0 g HCl and 40.0 g NaHCO3, do you have the same number of moles of each?
They both have a different number of moles
Further explanationGiven
40 g HCl
40 g NaHCO3
Required
moles
Solution
The mole is the number of particles contained in a substance
1 mol = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass
n = mass : molar mass
So the moles of a compound are affected by its molar mass (inversely proportional)
The larger the molar mass (of the same mass), the smaller the moles
molar mass HCl = 58.5 g/mol
molar mass NaHCO3 = 84 g/mol
mol HCl :
= 40 : 58.5
= 0.684
mol NaHCO# :
= 40 : 84
= 0.476
What two terms are used to describe the temperature at which solids and liquids of the same substance exist at the same time?
Answer:
The answer is melting and freezing point.
Explanation:
Which graph above shows an object’s acceleration?
a or b
Why did you choose that graph in question above (explain why)
Answer:
A i just did it. And yes i do go to k12
Explanation:
How many chemical changes can something go through
Answer:
Only one
Explanation:
What is the acceleration at 5s?
Answer:
-10 divided by 5=-2m/s squared
Explanation:
Answer:
A body falls for 5s from rest. If the acceleration due to the gravity of earth ceases to act, The distance travels in the next 3s is.
Explanation:
hopeot help you
In the following chemical equation, which are the reactants?
2HF + Mgo MgF2 + 2H20
>
A. 2HF + MgF2
B. 2H+ + Mgo
C. MgF2 + H20
D. MgO + H20
A
B
D
Which of the following represents a neutralization reaction which hydrofluoric acid and sodium hydroxide(a base) react to produce sodium choride(a salt) and water? 
Explanation:
A neutralization reaction is a reaction that involves an acid and a base.
When an acid reacts with a base to produce salt and water only, the reaction is said to be a neutralization reaction.
Acid + Base → Salt + Water
Such reactions are classified as a double displacement reaction in which a non-ionizing product is formed
what would a bond between potassium and chlorine be
Answer:Potassium react with elemental chlorine, an electron transfers from a potassium atom to a chlorine atom, forming potassium ion and chloride ion. ... As the bond formation between ions, the bond will be ionic. This is because, this process of transfer of electrons from one atom (K) to another atom (Cl).
Explanation:
In your own words, define the word "potential"
Answer:
1 : the chance or possibility that something will develop and become real There is a potential for injury. 2 : an ability or quality that can lead to success or excellence : promise She has great potential as a musician.
Explanation:
Answer:
potential: possessing or demonstrating the ability to evolve into or become something in the future.
OAmalOHopeO
Which statements accurately describe volume? Check all that apply. Volume is a physical property of an object. Volume is measured using a balance. The volume of a solid changes with the shape of the container. One unit of volume is the milliliter. Liquids and solids have constant volumes
Answer:
Liquids and solids have constant volumes
Explanation:
I believe this is the most correct statement
Answer:
Volume is a physical property of an object.
One unit of volume is the milliliter.
Liquids and solids have constant volumes.
Hope this helps <3
Explanation:
Which best explains why fungi are often called natural recyclers?
They provide a continuous food resource for many other organisms.
They break down rotting materials and return nutrients to the soil.
They take in large amounts of carbon dioxide, helping to clean the air.
O They are found in nature and have many different practical uses,
They break down rotting materials and return nutrients to the soil.
( They don't do photosynthesis since they are much different from plants)
Answer:
B
Explanation:
A room is a cube that measures 4 meters in each dimension. If the temperature changes from 10 C to 30 C, and the pressure decreases from 760 mm to 718 mm Hg, would air be trying to enter or leave the room? Show tour work
Answer:
More air will enter the room since the volume of the room increases.
Explanation:
We'll begin by calculating the initial volume (V₁) of the room. This can be obtained as follow
Length (L) of room = 4 m
Initial volume (V₁) =..?
V₁ = L³
V₁ = 4³
V₁ = 64 m³
Next, we shall determine if there is an increase in the volume of the room or not. This can be obtained as follow:
Data obtained from the question include:
Initial volume (V₁) = 64 m³
Initial temperature (T₁) = 10 °C + 273 = 283 K
Final temperature (T₂) = 30 °C + 373 = 303 K
Initial pressure (P₁) = 760 mmHg
Final pressure (P₂) = 718 mmHg
Final volume (V₂) =?
P₁V₁/T₁ = P₂V₂/T₂
760 × 64 / 283 = 718 × V₂ / 303
48640 / 283 = 718 × V₂ / 303
Cross multiply
283 × 718 × V₂ = 48640 × 303
203194 × V₂ = 14737920
Divide both side by 203194
V₂ = 14737920 / 203194
V₂ = 72.53 m³
SUMMARY
Initial volume (V₁) of room = 64 m³
Final volume (V₂) of room = 72.53 m³
From the calculations made above, we can see that the volume of the room increases from 64 m³ to 72.53 m³. Thus more air will enter the room since the volume of the room increases.
True or false: Oceans have no effect on the temperature on Earth’s land???
Answer:
false
Explanation:
Which statement describes absolute and apparent brightness?
NOTES TO TAKE DOWN:
Apparent brightness is a human measurement, and it would change for each star if the measurement were taken from another location. The more precise counterpart of apparent brightness is called absolute brightness (or absolute magnitude) and is the measure of the luminosity of a star, but on a common scale.
ANSWER:
Absolute brightness is the actual amount of light produced by the star, whereas apparent brightness changes with distance from the observer.
Which is an example of kinetic friction?
friction between a car’s windshield and the air as you drive into the wind
friction between a sticky note and the page of a book as it marks your place
friction between your shoes and the ground when you stand still
friction between your skin and a pencil as it rests in your palm
Answer: friction between a car's windshield and the air as you drive into the wind.
Explanation: Hope this helps :)
A chip is burned beneath an aluminum container holding 28.7 g of water causing the temperature of the water to increase from 11.3 °C to 33.2 °C. How many joules of heat were absorbed by the water? Water’s specific heat is 4.18 J/gºC
Answer:
Q = 2627.25 J
Explanation:
Given that,
The mass of water, m = 28.7 g
The temperature of the water to increase from 11.3 °C to 33.2 °C
The specific heat of water is 4.18 J/gºC
The heat absorbed by the water is given by :
[tex]Q=mc\Delta T\\\\Q=28.7 \times 4.18 \times (33.2-11.3)\\\\Q=2627.25\ J[/tex]
So, 2627.25 J of heat is absorbed by the water.
How many moles of silver metal are produced from 1.55 moles of copper metal? How many moles of copper(II) nitrate?
Answer:
1. 3.1 moles of silver, Ag.
2. 1.55 moles of Cu(NO₃)₂.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
Cu + 2AgNO₃ —> Cu(NO₃)₂ + 2Ag
From the balanced equation above,
1 mole of Cu reacted to produce 1 mole of Cu(NO₃)₂ and 2 moles of Ag.
1. Determination of the number of mole of silver (Ag) produced.
From the balanced equation above,
1 mole of Cu reacted to produce 2 moles of Ag.
Therefore, 1.55 moles of Cu will react to produce = 1.55 × 2 = 3.1 moles of Ag.
Thus, 3.1 moles of Ag is produced.
2. Determination of the number of mole of copper(II) nitrate, Cu(NO₃)₂ produced.
From the balanced equation above,
1 mole of Cu reacted to produce 1 mole of Cu(NO₃)₂.
Therefore, 1.55 moles of Cu will also react to 1.55 moles of Cu(NO₃)₂.
Thus, 1.55 moles of Cu(NO₃)₂ is produced
anybody know the answer to this ???
Answer:
Answer is C.
Explanation:
I hope it's helpful!
How many molecules are there in 5.9 moles of NaCl?
The number of molecules= 3.55 x 10²⁴
Further explanationGiven
5.9 moles of NaCl
Required
The number of molecules
Solution
The mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
So for 5.9 moles :
= 5.9 x 6.02 x 10²³
= 3.55 x 10²⁴
LEVEL 2
Solve each problem and write
the matching letter on the
blank above the answer
S Iron (1) oxide
Lead (IV) oxide
I
Load (1) Oxide
U Iron (1) Oxide
H Iron (III) hydroxide
T
Iron (IV) oxide
R Iron (II) Oxide
G Lead (1) Oxide
O
Lead (II) hydroxide
N
Iron (1) hydroxide
A Lead (111) hydroxide
Pbo
Feo,
Fe(OH), Pb(OH), FOOH
Pb,
Fo,o
Pb(OH),
Foo
Pb(OH), Foo
FeOH
Pbо,
Answer:
PbO = lead oxide G
FeO2 Iron (iv) oxide T
Fe(OH)3 iron(iii) hydroxide H
Pb(OH)3 lead(iii) hydroxide A
FeOH iron(i) hydroxide N
Fe2O3 iron (iii) oxide S
Pb(OH)3 lead(iii) hydroxide A
FeO iron(ii) oxide R
Pb(OH)2 lead(ii) hydroxide O
Fe2O iron (i) oxide U
FeOH iron (i) hydroxide N
PbO2 lead(iv) oxide D
Explanation:
If you need 2.5 moles of Rb2Cr7, how many grams do you need?
Answer:
0
Explanation:
Which type of absolute dating method would be best for a rock layer believed to be millions of years old?
Α. Helium (He)
В. Beryllium (Be)
C. Phosphorus (P)
D. Sulfur (S)
Answer: d
Explanation:
What does the respiratory system do for
the human body?
Answer:It’s helps use take in fresh air and conduct it to carbon
dioxide.
Explanation:Our respiratory system not only helps us turn air to Co2 the frest air also helps refresh our blood when it passes through our heart.
The primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. The respiratory system does this through breathing. When we breathe, we inhale oxygen and exhale carbon dioxide. This exchange of gases is the respiratory system's means of getting oxygen to the blood. The respiratory system also helps to regulate the acid-base level in the blood. lastly, the respiratory system allows us to vocalize by the movement of exhaled air through the larynx.
brings oxygen into the body
PLs help mweee Ill mark brainliest
the 3rd one is the answer
Chemical properties describe matter based on its ability to change into___
A. A new substance
B. The same thing
C. Water
D. A powder
Answer:
A. A new substance
Explanation:
sorry if its wrong if its right your welcome <3
What are 3 similarities between physical changes and chemical changes
Answer:
Heat change is involved in both process.
II. Both result in change of state of matter
Explanation:
Physical change substance involves the alteration of physical state of a substance. Chemical change substance involves the alteration of the chemical composition of the substance
What does autosexual mean?
Answer:
Autosexuality means people are more attracted to themselves than to others and may prefer masturbation to sex with a partner.
Answer: autosexual people are people who are attracted to themselves rather than other people.
Explanation: