Answer:
the science or practice of farming, including cultivation of the soil for the growing of crops and the rearing of animals to provide food, wool, and other products.
the science or practice of farming, including cultivation of the soil for the growing of crops and the rearing of animals to provide food, wool, and other products.
Which best describes why NH4+ can form an ionic bond with Cl-?
O Its outermost shell gains one or more electrons from Cl-.
Its positive charge is attracted to the negative charge of Cl-.
o It has a negative charge that is spread over the entire ion.
o It has a nitrogen atom that is strongly attracted to Cl-.
Answer:
B)
Explanation:
Its positive charge is attracted to the negative charge of Cl–.
(Brainliest bruh Cmon)
Ammonium ion is cation which forms ionic bond with an electronegative element such as chlorine. Thus its positive charge is attracted to the negative charge of Cl-.
What is ionic bond?Ionic bonds are formed between an electropositive atom or group with an electronegative atom or group. One or more electrons are lost from the electropositive group to the electronegative group.
Electropositive groups are electron rich and are capable of forming positive ions by losing electrons. These positive ions are called cations. Whereas, electron accepting group forms negative ions called anions.
In the case of ammonium ion the NH₄⁺ is in protonated form and Cl- is in deprotonated form, thus in fact there occurs an acid-base reaction between them where NH₄⁺ donates its H to Cl- forming HCl.
The electronegative pull of chlorine atom abstract the positively charged hydrogen and thus, option B is correct.
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a water tank can hold 0.50m^3 of water. When it’s half full, how many liters are needed to refill it?
Answer:250
Explanation:
Where are chemicals found?
A. In solids, liquids, and gases
B. Only in the air
C. Only in powders
D. Only in liquids
a) Complete the table below. b) You will use this information as a guide in creating your comic strip. c) The information for the Golgi body has already been filled in for you as an example. Structure of Cell Function Factory Part or Worker Golgi body Packages materials and distributes them within A factory worker who puts products or out of the cell in boxes and transports packaged products to the warehouses or to trucks that will leave the factory Cell wall Cell membrane
plzzz i need help!!!!
Answer:
1. Chief executive officer = Nucleus.
2. Power house = Mitochondrion.
3. Maintenance team = Lysosomes.
4. Functional managers = Chromosomes.
5. Assembly line workers = Ribosomes.
6. Assembly line = Endoplasmic Reticulum.
7. Security and support = Cytoskeleton.
8. Drivers or messengers = Vesicles.
9. Packaging unit = Golgi apparatus.
10. Gate man/procurement unit = Cell membrane.
Explanation:
A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life.
Generally, cells have the ability to independently replicate themselves. These cells can be compared to the kind of structures found in a business or factory, where you have different workers performing different functions.
In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles.
Factory worker = Cell organelle.
1. Chief executive officer = Nucleus.
The nucleus controls all the activities taking place in the cell and the synthesis of proteins.
2. Power house = Mitochondrion.
The mitochondria provides all the energy required in the cell by transforming energy forms.
3. Maintenance team = Lysosomes.
They are responsible for absorbing materials and breaking the materials taken in by the cells.
4. Functional managers = Chromosomes.
They give sets of instructions for the synthesis of products.
5. Assembly line workers = Ribosomes.
They are involved in the build up of proteins.
6. Assembly line = Endoplasmic Reticulum.
This is where the ribosomes perform their tasks.
7. Security and support = Cytoskeleton.
They help to maintain and support the shape of the cells.
8. Drivers or messengers = Vesicles.
They ensure proteins are properly transported to the right and exact location.
9. Packaging unit = Golgi apparatus.
Prepares the protein for export by chemically tagging them.
10. Gate man/procurement unit = Cell membrane.
It is the wall of the cell and typically controls what leaves and enters the cell.
please help :))
Look at the displacement reaction in the experiment below. To balance this equation what number should go in front of copper in the products?
Answer:
3
Explanation:
Al + CuSO₄ → Al₂(SO₄)₃ + Cu
two aluminum atoms in products. put 2 in front of Al in reactants.
2 Al + CuSO₄ → Al₂(SO₄)₃ + Cu
three sulfur atoms and twelve oxygen atoms in products. put 3 in front of CuSO₄ in reactants.
2 Al + 3 CuSO₄ → Al₂(SO₄)₃ + Cu
three copper atoms in reactants. put 3 in front of Cu in products.
2 Al + 3 CuSO₄ → Al₂(SO₄)₃ + 3 Cu
The equation is balanced. Hope that helps.
The right answer is "3"
Answer explanation:
To balance an equation, there needs to be the same number of each atom on both sides of the equation
Compare and contrast the properties of charcoal and carbon dioxide.
Answer:
Incomplete combustion of carbon occurs if enough air is not available to convert all of it to carbon dioxide, and in such as case carbon monoxide is formed by the addition of half the amount of oxygen as is present in carbon dioxide, to the carbon atom, namely, CO instead of CO2.
Explanation:
Sucrose: density = 1.59 g/cm³. Your experiment showed a density of 1.68 g/cm³. What is the percent error *
Answer:
The answer is
5.66 %Explanation:
The percentage error of the density can be found by using the formula
[tex]Percentage \: \: error(\%) = \frac{error}{actual \: \: number} \times 100 \\ [/tex]
From the question
actual density = 1.59 g/cm³
error = 1.68 - 1.59 = 0.09
The percentage error is
[tex]P(\%) = \frac{0.09}{1.59} \times 100\% \\ = 5.66037735...[/tex]
We have the final answer as
5.66 %Hope this helps you
plss help ! chemistry
Answer:
1. place some sulfuric acid in a beaker and warm it in a water bath.
2. add a spatula of copper(II) oxide powder to the acid and stir with a glass rod.
3. continue adding copper(II) oxide powder until it is in excess.
4. filter the mixture to remove the excess copper(II) oxide.
Explanation:
which of the following substance is usted up during photosynthesis
Help ASAP
What is one way to tell that a solid has formed a solution with water?
O A. The liquid changes color as the solid disappears.
о
B. Some of the solid remains at the bottom of the container.
O C. Gas bubbles are produced as the solid disappears.
O D. The solid can be recovered by evaporating the water.
Answer:
B
Explanation:
I'm pretty sure it's B. Good luck
Some of the solid remains at the bottom of the container is one way to tell that a solid has formed a solution with water. Therefore, option B is correct.
What do you mean by solution ?A solution is a uniform mixture of one or more dissolved solutes in a solvent. A solvent is a substance that dissolves a solute to produce a homogeneous mixture. The substance that dissolves in a solvent to form a homogeneous mixture is referred to as a solute.
Solution that is saturated. A solution containing a solute that dissolves until it is no longer able to dissolve, leaving the undissolved substances at the bottom.
If more solute is added, and it still does not dissolve, the original solution has become saturated. If the solute added dissolves, the original solution was unsaturated.
Thus, Some of the solid remains at the bottom of the container is one way to tell that a solid has formed a solution with water, option B is correct.
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Which of the following statements correctly describes density? a Density is an intensive property because it does not depend on the amount. b Density is an intensive property because it depends on the amount of a substance. C Density is an extensive property because it depends on the amount of a substance. d Density is an extensive property because it does not depend on the amount.
Answer:
Density is an intensive property because it does not depend on the amount
Explanation:
Taking into account the definition of density, intensive properties and extensive properties, density is an intensive property because it does not depend on the amount of a substance (option a).
Intensive propertiesIntensive properties of matter are defined as those that do not depend on the amount of material in a body.
This means that they will remain the same even if the amount of matter in a body varies.
Extensive propertiesExtensive properties of matter are defined as those that depend on the amount of material in a body.
The greater the mass or the greater the size of the body or system, the greater the proportion of that property.
What is densityDensity is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.
In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance. Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:
[tex]density=\frac{mass}{volume}[/tex]
The density of a body will always be the same regardless of its mass. So density is an intensive property.
Correct statementConsidering the definition of density, intensive properties and extensive properties, density is an intensive property because it does not depend on the amount of a substance (option a).
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How many moles of copper are in 8.5 x1024 atoms of copper?
Answer:
The answer is
14.12 molesExplanation:
To find the number of moles of an element given the number of entities in the element we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question
N = 8.5 × 10²⁴ atoms of copper
We have
[tex]n = \frac{8.5 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 14.11960132...[/tex]
We have the final answer as
14.12 molesHope this helps you
Question 5 of 25
Which two phrases best describe vascular tissue in plants?
A. Contain root hair cells and guard cells
B. Cover the outside of plants
c. Contain cells that connect to form pipes
D. Transport water and food
SUBMIT
An atom has 10 protons and 10 neutrons, what is the elements mass number?
Shale forms from tiny particles of which material?
A. Mica
B. Sand
C. Clay
D. Obsidian
Answer:
a. mica
Explanation:
which of these has the highest frequency?
ultraviolet light
radio waves
xrays
microwaves
Why is an atom considered electrically neutral?
Explanation:
A proton and an electron have an equal amount but an opposite type of charge. Thus, if an atom contains equal numbers of protons and electrons, the atom is described as being electrically neutral.
Answer:
.
Explanation:
A proton and an electron have an equal amount but an opposite type of charge. Thus, if an atom contains equal numbers of protons and electrons, the atom is described as being electrically neutral.
Use the ruler determine the length of the blue object
Record vor answer to the neareste
The objects
Centimeters long
Answer: 2.7 centimeters long.
Explanation: count from starting at the beginning of the number on the ruler "2" and counted up until the end of the blue object. Counted 7 lines, so, 2.7 is the correct answer.
Answer:
2.7
Explanation:
a d d m y s n a p gianavaughn007 ;)
who would you rather date. . .
zuko
sokka
aang
toph
katara
suki
Answer:
katara
Explanation:
I would rather date zukoo
The default setting shows two people holding one object each. The mass of the blue object is 38 kilograms, the red one 25 kilograms. Note that the value of force each object applies on the other is the same (0.00000000396 newtons), but in the opposite direction. This value is written in standard notations. Express this value in scientific notation.
Answer:
3.96 × 10-9
Explanation:
Answer: 4.1712 x 10^-8
Explanation:
Give two examples of leaves that we eat
Solve a +b+c, When a = 25.164, b= 74.1, c= 46.98
using proper number of significant figures.
Answer:
146.244
Explanation:
25.164
+ 74.100
+ 46.980
= 146.244
8.08 x 1022 atoms of krypton
PLEASE
Answer:
8.08 x 10^22 atoms/1 = 1 mol/6.02 x 10^23 atoms
Thank you much!
you have an object with a mass of 86g and a volume of 10cm cubed. what is the density
Explanation:
density = mass/ volume
density = 86/ 10
density = 8.6 g/ cm³
An atom has a mass number of 9 and 5 neutrons What is its atomic number?
A. 14
B. 11
C. 19
D. 4
Answer:
D. 4
Explanation:
mass number - number of neutrons = number of protons
Scientists think that Pangaea separated due to
O A. climate changes.
B. continental drift.
C. weathering.
D. glaciers.
Question 12 of 32 Which of the following do all living things have in common? O A. All living things are made up of at least one cell. B. All living things are made up of many cells. I O C. All living things eat other living things for energy. D. All living things breathe oxygen. SUBIN
Answer:
A
Explanation:
It cant be B because of single celled organisms and it cant be C because or photosynthesis and it cant be D because plants take in carbon dioxide
The process where a substance reacts with oxygen
Answer:
The process where substance react with oxygen is called combustion.
Explanation:
When substance react with oxygen combustion is occur. The substance which burned is called fuel and in this process large amount of heat is released to the surrounding. It is exothermic process.
For example:
4Li + O₂ → 2Li₂O
2Mg + O₂ → 2MgO
S + O₂ → SO₂
The product which is formed as a result of combustion reaction are called oxides.
In given examples we can see that lithium, magnesium and sulfur react with oxygen and product formed is oxides of respective elements such as lithium oxide ( Li₂O), magnesium oxide (MgO) and sulfur oxide ( SO₂ ).
How are heterogeneous and homogeneous mixtures separated?
Answer:
Explanation:
In heterogeneous mixtures, two or more ingredients (or phases, regions with uniform composition and properties) intermingle, but remain physically separate. Often it is possible to separate the original ingredients by physical means, such as filtering.
