Answers
Answer: it’s the bottom 2
Explanation: I just took the test and was able to see the answer. :)
Answer:
Chemistry makes no sense. See below for answer.
Explanation:
Related Questions
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
Answers
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.
If you need 2.5 moles of Rb2Cr7, how many grams do you need?
Answers
Answer:
0
Explanation:
which of these elements has the highest electronegativity
A) lithium
B) nitrogen
C) potassium
D) arsenic
E) beryllium
Answers
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
Answers
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:
what would a bond between potassium and chlorine be
Answers
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:
anybody know the answer to this ???
Answers
Answer:
Answer is C.
Explanation:
I hope it's helpful!
Chemical properties describe matter based on its ability to change into___
A. A new substance
B. The same thing
C. Water
D. A powder
Answers
Answer:
A. A new substance
Explanation:
sorry if its wrong if its right your welcome <3
What two terms are used to describe the temperature at which solids and liquids of the same substance exist at the same time?
Answers
Answer:
The answer is melting and freezing point.
Explanation:
What is salinity? (giving you 30 points if you answer it and I give brainlist)
Question 1 options:
a liquid mixture in which the smaller component (solute) is distributed evenly through the major component (solvent)
The concentration of dissolved salt in a liquid
to become incorporated with a liquid in forming a solution
the total amount of salt dissolved in the sea
Answers
Answer:
D
Explanation:
Salinity is the saltiness or amount of salt dissolved in a body of water
Answer:
its b trust me i got it right
Explanation:
How many moles of silver metal are produced from 1.55 moles of copper metal? How many moles of copper(II) nitrate?
Answers
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
True or false: Oceans have no effect on the temperature on Earth’s land???
Answers
Answer:
false
Explanation:
Which type of absolute dating method would be best for a rock layer believed to be millions of years old?
Answers
Explanation: Most absolute dates for rocks are obtained with radiometric methods. These use radioactive minerals in rocks as geological clocks. The atoms of some chemical elements have different forms, called isotopes.
What does autosexual mean?
Answers
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:
PLs help mweee Ill mark brainliest
Answers
the 3rd one is the answer
Which statement describes absolute and apparent brightness?
Answers
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.
If you have 40.0 g HCl and 40.0 g NaHCO3, do you have the same number of moles of each?
Answers
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
I need help with this one question
Answers
Answer:
colder
Explanation:
What is the lowest energy level that contains d orbitals?
O A. 4
O B. 3
O C. 2
D. 1
Answers
Answer:
I believe it 3
Which graph above shows an object’s acceleration?
a or b
Why did you choose that graph in question above (explain why)
Answers
Answer:
A i just did it. And yes i do go to k12
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,
Answers
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:
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,
Answers
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:
How many molecules are there in 5.9 moles of NaCl?
Answers
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
In your own words, define the word "potential"
Answers
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 of the following represents a neutralization reaction which hydrofluoric acid and sodium hydroxide(a base) react to produce sodium choride(a salt) and water? 
Answers
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
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
Answers
2HF + Mgo MgF2 + 2H20
>
A. 2HF + MgF2
B. 2H+ + Mgo
C. MgF2 + H20
D. MgO + H20
A
B
D
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
What are 3 similarities between physical changes and chemical changes
Answers
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
Α. Helium (He)
В. Beryllium (Be)
C. Phosphorus (P)
D. Sulfur (S)
Answers
Answer: d
Explanation:
What does the respiratory system do for
the human body?
Answers
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
What is the acceleration at 5s?
Answers
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
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
Answers
Answer: friction between a car's windshield and the air as you drive into the wind.
Explanation: Hope this helps :)