Answer:
question 1 i believe is c i will put the other answeres in comments
when i finish the test
Explanation:
The carbon cycle plays an important in maintaining carbon balance on the earth.
What is the carbon cycle?The carbon cycle is the cycle by which carbon is recycled between the atmosphere and the geosphere.
In the carbon cycle, the process of recycling carbon do not include deep burial, compaction, and cementation.
Volcanic eruptions are one natural way that carbon can move OUT of the geosphere.
Fossil fuels, atmosphere, land biomass and rocks are all carbon reservoirs, but fossil fuels contains the MOST carbon.
The atmosphere is the carbon reservoir that changes the quickest and has the biggest direct effect on climate.
Ocean acidification occurs because the ocean absorbs more human-produced CO2, causing the acidity to increase.
A potential impact of ocean acidification is that ocean ecosystems may suffer, making it harder for humans to get food from the ocean.
Therefore, the carbon cycle is important in maintaining carbon balance on the earth.
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What do we know about the arrangement of atoms during a chemical reaction?
Answer: In a chemical reaction, the atoms and molecules that interact with each other are called reactants. ... No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
Explanation:
Answer: In a chemical reaction, the atoms and molecules that interact with each other are called reactants. ... No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
Explanation: Hope this helped! :)
If I touch a hot object, my hand gets hot through which type of heat transfer?
Answer:
Thermal Transfer.
Explanation:
If you touch a hot object, the heat is transferred from the object to your hand through conduction. (This is the actual answer.)
A horse weighs 240 kg. If its running at a speed of 18 m/s, what's the linear momentum of the horse
Answer: The answer is 4320
Explanation:
I got the answer correct
True or False: The amount of water has and will always remain about the same?
Answer:
In the world? I would say no, but at the same time there are a lot of variables to consider in this. But I'd say no. Just my opinion.
Explanation
Answer:
False the amount of water on earth has decreased over the years
Explanation:
calculate the [H+] if the [OH-] is 7.34x10^-10
pls show work
The equation for the complete combustion of ethene (C 2 H 4 ) is C 2 H 4 + 3O 2 2CO 2 + 2H 2 O If 2.70 mol of C 2 H 4 reacted with 6.30 mol , O 2 a. Identify the limiting reagent. b. Calculate the moles of water produced .
Answer:
22
Explanation:
Single-celled organisms need a microscope to be seen...
O True
O False
Answer:
True
Explanation:
Microscope is an instrument which is used to observe small objects. There are many types of microscope with a different magnitude.
Ms. Gratz went outside last night and saw a full moon as shown:
Which moon phase would she see next?
Hi! I need some help with this pleaseeee!!
When two objects of different temperatures are placed in contact with one another, eventually: (choose one option from below)
a) both their average kinetic energy and temperature will be the same
b) their average kinetic energy will be the same
c) neither their average kinetic energy and temperature will be the same
d) their temperature will be the same
What must be happening to the forces of attraction between particles when a change of state occurs?
Answer:
The particles need energy to overcome the attractions between them. As the liquid gets warmer more particles have sufficient energy to escape from the liquid. Eventually even particles in the middle of the liquid form bubbles of gas in the liquid.
Fe2O3 (s) + 2 Al (s) ---> 3 Fe (l) + Al2O3 (s) Based on the thermite reaction, how much aluminum oxide (Al2O3) is formed from 8.0 grams of aluminum (Al)?
Answer:
15.3 g
Explanation:
Fe₂O₃ (s) + 2Al (s) → 3Fe (l) + Al₂O₃ (s)First we convert 8.0 grams of aluminum into moles, using its molar mass:
8.0 g Al ÷ 27 g/mol = 0.30 mol AlThen we convert 0.30 moles of aluminum into moles of aluminum oxide, using the stoichiometric coefficients:
0.30 mol Al * [tex]\frac{1molAl_2O_3}{2molAl}[/tex] = 0.15 mol Al₂O₃Finally we convert 0.15 moles of Al₂O₃ into grams, using its molar mass:
0.15 mol Al₂O₃ * 102 g/mol = 15.3 g Al₂O₃Shontal compared some of the properties of a marble to a piece
of wood. She placed a marble and a piece of wood in a bucket filled
with water. Shontal observed the wood floating on top of the water,
but the marble sank to the bottom of the bucket. Which statement
best explains why the marble and piece of wood acted differently in
the water?
Answer:
I can't see your answer choices, but it would be something that related to density of the marble vs. wood.
Explanation:
Density is mass divided by volume. A marble with a greater density than water will sink, and wood with lower density than water will float.
Find the volume of 2.40 moles of gas whose temperature is 50.0°C and whose pressure is 2.00 atm.
blank a long narrow Stepside value that forms the deepest part of the ocean
Answer:
The answer is a trench
Which type of bonding forms due to electrical attractions between oppositely charged elements
Answer:
Explanation:
Ionic bond
Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.
True or false: All molecules or atoms in a substance have the same amount of kinetic energy at a given temperature?
Answer:
1
False. if they all moved together at any time then it would be a million things withinthe human species all at once at a high rate
a.
1. You touch a shopping cart in the grocery store parking lot. What type of heat
transfer is happening between your hand and the handle?
Conduction
b. Convection
C. Radiation
d. Thermal Equilibrium
The transfer of energy between systems through work is the expansion of gas in a steam engine. By doing work or by transferring heat, energy can be transferred. Therefore, option A is correct option.
What is energy transfer?Energy transfer is a phenomenon in which energy transfer from one matter to another matter. Energy requirement is necessary to move any object so work has to be done by the gas to the piston.
Heat can be transferred by three ways radiation, convention or conduction. In conduction, direct contact of two body is necessary for transfer of molecules. When we touch a shopping cart in the grocery store parking lot, then conduction is the process by which heat is transferred between our hand and the handle.
Therefore, the option A is correct option that is conduction.
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What are bacteria? Chapter 7 lesson 2 AYU
Answer:
a group of unicellular microorganisms
Answer:
bacteria are a type of biological cell,they constitute a large domain of prokaryotic microorganisms,single celled. The cells are all prokaryotic . This means they do not have a nucleus or any other structures which are surrounded by membranes . ... Bacteria also have small, closed-circles of DNA called plasmids present in their cytoplasm
Explanation:
Which statement is not
true?
A. The troposphere is responsible for nearly
all of Earth’s weather.
B. The exosphere reaches deep into space
and is the least dense layer.
C. The thermosphere typically breaks up
meteors before they hit Earth.
D. The stratosphere allows commercial
airlines to fly with less turbulence because
of fewer convection currents.
The atmosphere of the earth is layered and each layer of the atmosphere has its own properties. The atmosphere of the earth is divided into four layers. The thermosphere typically breaks up meteors before they hit Earth is not correct. The correct option is C.
What is mesosphere?The four important layers of atmosphere are troposphere, stratosphere, thermosphere and mesosphere. The layer of the atmosphere which is found above the stratosphere is defined as the mesosphere. It is the coldest layer of the atmosphere.
A meteor is known as a celestial object which is made up of rocks and minerals which enters the atmosphere of the earth and burns out completely before reaching the surface of the earth. It is known as the shooting star or falling star.
The temperature of mesosphere drops with altitude. By 80 km it reaches 100 degree celsius. The meteors burn up in this layer not in thermosphere.
Thus the correct option is C.
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Using the equation below, calculate the percent yield of H3PO4 if an experiment that started with 12.98 grams of HCl and excess Na3PO4 yielded 8.42 g of H3PO4. Please round to the nearest 0.01 and remember units and substance.
Na3PO4 + HCl --> NaCl + H3PO4
how does reactants in photosynthesis combine to make atoms molecules
Answer:
hope this helps
Explanation:
Photosynthesis
Photosynthesis
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities. This chemical energy is stored in carbohydrate molecules, such as sugars, which are synthesized from carbon dioxide and water – hence the name photosynthesis, from the Greek phos, "light", and sunthesis "putting together". In most cases, oxygen is also released as a waste product. Most plants, algae, and cyanobacteria perform photosynthesis; such organisms are called photoautotrophs. Photosynthesis is largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere, and supplies most of the energy necessary for life on Earth.
Observa los dibujos cada uno representa una sustancia. Cada bolita representa un simboliza un átomo de un elemento.
Answer:
A: Elemento
B: Elemento
C: Elemento
D: Compuesto
E: Elemento
F: Compuesto
G: Compuesto
H: Compuesto
I: Elemento
J: Compuesto
K: Elemento
L: Elemento
Se adjunta la imagen con los dibujos.
Explanation:
Un elemento químico está compuesto por átomos específicos, por ejemplo el oxígeno, el helio, el sodio, cloro. Por otro lado, un compuesto químico es la combinación de dos o más elementos químicos diferentes, por ejemplo, cloruro de sodio, que forma por la combinación de sodio y cloro (NaCl), dióxido de carbono, que se forma por la unión de carbono con tres átomos de oxígeno (CO₃), agua que se forma por la combinación de dos átomos de hidrógeno con un átomo de oxígeno(H₂O), etc.
can someone explain in detail how molar mass, Avogadro's number, and volume are all connected through moles? Im so confused :(
Answer:
See Explanation
Explanation:
By definition, 1 mole is the mass of substance (or, formula mass in grams) containing 1 Avogadro's Number (N₀ = 6.02 x 10²³) of particles. That is ...
1 mole of hydrogen atoms (H) = 1.00794 grams
1 mole of molecular hydrogen (H₂) = 2.01588 grams
1 mole of any substance = 1 formula weight in grams
1 mole = 1 Avogadro's Number (N₀) = 1 formula weight in grams
In the concept of 'gas laws' 1 mole of any (all) gas at STP conditions ( => 0°C & 1 atmosphere pressure) occupies 22.4 Liters & is known as the 'molar volume' of a gas at STP. If the temperature &/or pressure change the volume will not be 22.4 Liters.
For reactions whose coefficients are balanced to the lowest whole number values (i.e., no fractional coefficients) the equation is known as the 'standard reaction' and conditions are assumed to be STP and the coefficients of gas phase components indicate molar volumes. Example ...
Given N₂(g) + 3H₂(g) => 2NH₃(g) is assumed to be at 0°C; 1 Atm pressure.
Molecular Nitrogen = 1 molar volume = 22.4 Liters of N₂(g)
Molecular Hydrogen = 3 molar volumes = 3 x 22.4 Liters of H₂(g) = 67.2 Liters of H₂(g)
Molecular Ammonia = 2 molar volumes = 2 x 22.4 Liters of NH₃(g) = 44.8 Liters of NH₃
A 30.0 mL aliquot of 0.0250 M HCl solution is titrated using 0.0500 M NaOH.
A) determine the volume of NaOH necessary and the pH at the equivalence point.
B) Determine the pH of the solution after 160.00 mL base is added.
Answer:
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hkgkfu
Explanation:
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When thermal energy is removed from matter, what happens to the molecules?
Answer:
Figure it out.
Explanation:
What is the formula for the compound formed by Al3+ and N3- ?
Answer:
[tex]\boxed {\boxed {\sf AlN}}[/tex]
Explanation:
The goal when forming compounds is to achieve a net charge of 0.
We are given aluminum with a charge of 3+ and nitrogen with a charge of 3-.
These charges are equal and opposite, so one of each will equal 0.
3+ (Al) + 3- (N) = 0Therefore, we do not need any subscripts. List the metal's symbol (aluminum) then the nonmetal.
AlNTh formula for the compound, which is aluminum nitride, is AlN.
2 HCl (9)
=H2(g) + Cl2 (9)
K = [H][CI]/[HCI)
UK = [H][CI]/2[HCI]
K = 2[HC]/[H]CI.)
K = [HCI)?/[H][1]
Answer:
(K) = [H2] [Cl2] / [HCl]²
Explanation:
The equation of the reaction is given as;
2 HCl (g) ⇔ H2 (g) + Cl2 (g)
The Equilibrium constant is the ratio of the concentration of the products and reactants raised to the power of their coefficients
Products = H2 and Cl2
Reactants = HCl
Equilibrium constant (K) = [H2] [Cl2] / [HCl]²
Describe a time in the group discussion when someone cited evidence from their research to make a point.
The role of the presenter in a group discussion to introduce information for the group to discuss.
What do you mean by group discussion?A discussion involving a number of people who are connected by some shared activity, interest, or quality.
Group discussion is a tool to test your teamwork skills, listening skills, discussion ability, subject knowledge, and communication.
Intrinsic skills like reasoning, speaking and time management come in very handy.
Skills that you can work upon include presentation, summarizing and people speaking.
The purpose of a group discussion is not to win an argument or to amuse your classmates.
The purpose of a discussion is to help each group member explore and discover personal meanings of a text through interaction with other people.
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Answer:
This happened when a nutritional question was presented. When asked a nutritional question, evidence was cited from one of the above sites to back up the answer.
Explanation:
what are the chemical properties of acids
Answer:
Acids are sour in taste. Acids react with carbonates and hydrogen carbonates to form a salt, water, and carbon dioxide gas. Extremely active metals such as Potassium (K), Calcium (Ca), Sodium (Na), etc tend to explode when combined with acids. Weak Acids like Carbonic Acid doesn't act with any metal at all.
I copied and pasted
but I hope the info helps
The gametes are identical to each other and combine to make an identical organism.
True
False
Answer:
true
Explanation: