Chemical bonds release energy when they break apart, and take in energy when they form. How does this observation help explain the energy released by burning wood?
explain the geological process that results in the formation of minerals!!
will give brainly!
Answer: The four main categories of mineral formation are: (1) igneous, or magmatic, in which minerals crystallize from a melt, (2) sedimentary, in which minerals are the result of sedimentation, a process whose raw materials are particles from other rocks that have undergone weathering or erosion, (3) metamorphic, in which
Explanation:
Answer:
The four main categories of mineral formation are: (1) igneous, or magmatic, in which minerals crystallize from a melt, (2) sedimentary, in which minerals are the result of sedimentation, a process whose raw materials are particles from other rocks that have undergone weathering or erosion, (3) metamorphic.
In order for the process to be endothermic, the energy required to break the lattice has to be _______ than the energy released as the ions go into solution.
a. Greater
b. Less
Explanation:
I honestly believe the answer is greater
If the energy required to break the lattice is less than the energy released as the ions go into solution, then the dissolution of solute is endothermic.
An endothermic reaction is one in which energy is absorbed. This implies that the energy change of the reaction is positive.
Now, if the energy required to break the lattice is less than the energy released as the ions go into solution, then the process is endothermic and energy is absorbed.
Learn more about endothermic reaction: https://brainly.com/question/1301963
Lead (II) Acetate + Potassium Chromate
Answer:
SOMEONE HURRY AND ANSWER THIS
Explanation:
Two rabbit species, X and Y, live in an Arctic environment that is also populated by wolves. Species x turns white in the winter and
brown in the spring. Species y stays brown all year. The population of species X has slowly been increasing over the population of
species Y. What is most likely causing this population change?
Answer:
yy
Explanation:
We have 548 grams of CaCl2. How many molecules of CaCl2 do we have? (The molar mass of CaCl2 is 110.98 g/mol)
Group of answer choices
2.97 x 10^24 molecules
3.66 x 10^28 molecules
9.1 x 10^22 molecules
4.37 x 10^22 molecules
Answer:
Try everything
1.42 x 10^24 molecules
1.78 x 10^28 molecules
7.04 x 10^23 molecules
14.2 x 10^24 molecules
Explanation:
Identify one step in the water cycle that is driven by the force of gravity
Answer:
i believe its precipitation??
Explanation:
A car starts from rest. It takes 6.0 seconds for the car to accelerate to 5 m/s2 W. What is the final velocity?
Answer: 30 m/s
Explanation:
Use the first kinematic equation for linear motion
[tex]V=V_i+at\\V=0+(5)(6)\\v=30m/s[/tex]
please help me on this question
Answer:
B
Explanation:
That seem the most locigal to me
CuCl2 + NaNO3 -------> Cu(NO3)2 + NaCl
Answer:
what
Explanation:
Is warm water or cold water more dense
Step 5: Measure Pressure and Volume with the Weight
of the Book
Total the mass on the syringe. Record it in the
correct row of the data table.
Click and drag the book to increase pressure.
Click the syringe to zoom in and see the volume.
Answer:
0.498
Explanation:
because that is the right answer
Answer:
the answer is
498 g
.498 kg
Explanation:
Which phrases describe the open-ocean zone? Check all that apply.
very little sunlight
few nutrients
low temperatures
low density
located near coasts
Answer:
- few nutrients
- low temperatures
-very little sunlight
Explanation:
Answer:
I think it's: located near coasts.
Match The hydrocarbon names and structural formulas
PLEASE HELP!!!
Which of the analogies best describes a Bohr model of an atom?
A. A Bohr model is like a bowling ball because they are both solid spheres.
B.A Bohr model is like a model of the solar system because they both show orbits around a massive center
C. A Bohr model is like a string of beads because they both contain small parts that are lined up in a row.
D. A Bohr model is like a jigsaw puzzle because they are both made up of small parts that are all joined together.
Answer:
B is the Bohr model of atom
Calculate AH for the following reaction.
C2H4(g) + H2(g) → C2H6(g)
(ΔHf° for C2H4(g) = 52.5 kJ/mol; ΔHf° for C2H6(g) = -84.7 kJ/mol)
a. -137.2 kJ
b. -32.2 kJ
c. 32.2 kJ
d. 137.2 kJ
Answer:
a.-137.2 kJ
Explanation:
If the first example symbol used is addition you can copy the plus and follow it how to solve the next!And also if the negative or positive sign.
The reaction heated up 100 g of water in the beaker from 25 °C to 50.0 °C. The specific heat capacity of water is 4.184 J/g°C. Calculate the amount of heat energy that was released by the reaction.
Answer:
The amount of heat energy that was released by the reaction is 10,460 J.
Explanation:
Sensible heat is that which a body or an object receives or releases and causes its temperature to increase or decrease without affecting its molecular structure and therefore its state.
In other words, sensible heat is the amount of heat that a body absorbs or releases without any changes in its physical state (phase change). When a body is supplied or absorbed sensible heat, the temperature varies.
The equation that allows calculating heat exchanges is:
Q = c * m * ΔT
where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.
In this case:
c= 4.184 [tex]\frac{J}{g*C}[/tex]m= 100 gΔT= Tfinal - Tinitial= 50 C - 25 C= 25 CReplacing:
Q= 4.184 [tex]\frac{J}{g*C}[/tex] *100 g* 25 C
Solving:
Q=10,460 J
The amount of heat energy that was released by the reaction is 10,460 J.
Describe the pattern of the Lewis dot structures of the first 18 elements (include periods and groups/families)?
Answer:
The Lewis dot structures of elements in the same group are the same (except that the name of the element is shown in the structure) while for elements in the same period it increases by one from left to right.
Explanation:
Lewis dot structures are the structures which represent the valence electrons of an atom. The dots in the structure represent electrons in the valence shell of the atom.
Elements in the periodic table are arranged into groups and periods. The groups are the vertical columns whereas the periods are the horizontal rows. The first 18 elements of the periodic table are Hydrogen(H), Helium (He), Lithium (Li), Beryllium (Be), Boron (B), Carbon (C), Nitrogen (N), Oxygen (O), Fluorine (F), Neon(Ne), Sodium (Na), Magnesium (Mg), Aluminum (Al), Silicon (Si), Phosphorous (P), Sulfur (S), Chlorine (Cl) and Argon (Ar). They are found within Groups IA to VIIIA, as well as from period 1 to 3 in the periodic table. elements in group IA have one valence electron; elements in group IIA has two, IIIA has three, IVA has four, VA has five, VIIA has six, VIIA has seven, while VIIIA has eight valence electrons.
Elements in the same group have the same number of valence electrons while the valence electrons of elements in the same period increase by one from left to right. Therefore, the Lewis dot structures of elements in the same group are the same (except that the name of the element is shown in the structure) while for elements in the same period it increases by one from left to right.
The Lewis dot structure of the first 18 elements is shown in the attachment below.
advantages of solar energy
cell are the blank unit of all living organisms
Which statement describes vascular plants?
Answer:
A vascular plant is any one of a number of plants with specialized vascular tissue. The two types of vascular tissue, xylem and phloem, are responsible for moving water, minerals, and the products of photosynthesis throughout the plant.
Explanation:
What type of Star is this?
1. Main Sequence
2. Super Giant
3. Giant
4. White Dwarf
Answer:
#3
Explanation:
not sure but it's close to 5,100
Calculate the number of atoms in 0.0340 g Zn.
Answer:
moles Hg = 25.8 / 200.59 = 0.129
atoms = 0.129 x 6.02 x 10^23 =7.74 x 10^22
Moles Zn = 0.0340 / 65.39 =0.000520
atoms = 3.13 x 10^20
work in the same way : divide the mass by the molar mass and multiply by 6.02 x 10^23
Explanation:
The number of atoms in 0.0340g of Zinc (Zn) is 3.148 × 10²⁰ atoms.
HOW TO CALCULATE NUMBER OF ATOMS:
The number of atoms contained in a substance can be calculated by multiplying the number of moles of that substance by Avogadro's number (6.02 × 10²³). That is;no. of atoms = no. of moles × 6.02 × 10²³
In this question, we must first convert 0.0340g of Zinc to moles by using the following formula:no. of moles = mass ÷ molar mass
no of moles = 0.0340g ÷ 65g/mol
no of moles = 5.23 × 10-⁴mol
Hence, the number of atoms in Zinc is as follows:no of atoms = 5.23 × 10-⁴ × 6.02 × 10²³
no. of atoms = 5.23 × 6.02 × 10²³-⁴
no of atoms = 31.48 × 10¹⁹
no of atoms = 3.148 × 10²⁰ atoms.
Therefore, the number of atoms in 0.0340g of Zinc (Zn) is 3.148 × 10²⁰ atoms.Learn more: https://brainly.com/question/22552359?referrer=searchResults
pls answer if you do ty so much
Answer:
c
Explanation:
BCL PART
<
10 of 25
Fill in the coefficients with the correct numbers to create a balanced equation,
Al + _ Brg _M1Brz
0 1,21
2,3,2
4,6,4
34,3
Answer:
im not sure sorry
Explanation:
The picture shows a diver constructing artificial reef in a shallow area of the ocean. artificial reef is intended to affect the ocean ecosystem by-
A. removing pollution from the water
B. Providing shelter for marine organisms
C. Causing sediment to erode into deeper waters
D. Preventing people from overfishing along the shore
Answer:
Everyone, the answer is actually B. Providing shelter for marine organisms
Explanation:
We just went over this question in class, this is the right answer. Causing sediment to erode in the waters just doesn't make any sense.
The materials which are used to construct artificial reefs includes rocks, wood, old tires, etc. The artificial reef affect the ocean ecosystem by providing shelter for marine organisms. The correct option is B.
What is an artificial reef?An artificial reef is defined as the manmade structure which may mimic some of the characteristics of the natural reef. The submerged shipwrecks are the most common form of artificial reef. The oil and gas platforms, bridges, etc. and other offshore structures are also function as artificial reefs.
From tourism to marine recreation and also for sport fishing, the reefs play an important role in local economies. They are also important for the health of the ocean and provides habitat for the variety of marine life and support the ocean ecosystems.
The artificial reefs are generally constructed to protect and enhance or restore the components of the marine ecosystems.
Thus the correct option is B.
To know more about artificial reefs, visit;
https://brainly.com/question/17238115
#SPJ3
What is the formula of a compound that has [1 mol Fe], [1 mol Ti], and [3 mol O]
Answer: [tex]FeTiO_3[/tex]
Explanation:
Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.
Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.
The molecular formula for a compound that has [1 mol Fe], [1 mol Ti], and [3 mol O] will be [tex]FeTiO_3[/tex]
Tori completed an experiment to see what happens to differently charged objects when they come close to each other. Based on the observations that she collected, her teacher told her there is an error in her table. How can Tori correct her table?
A table with two columns. The first row is the headings of the table. The first column is labeled electrically charged objects and the second column is labeled attract or repel. In the first column, second row, there is an image of a beach ball with a negative charge on it and a dress with a positive charge on it. In the second column, second row, is attract. In the first column, third row, there is an image of a t shirt with a negative charge on it and a beach ball with a negative charge on it. In the second column, third row, is attract. In the first column, fourth row, there is an image of a t shirt with a negative charge on it and a glove with a negative charge on it. In the second column, fourth row, there is repel. In the first column, fifth row, is an image of a chair with a positive charge on it and a dress with a positive charge on it. In the second column, the fifth row is attract.
Answer:
A negatively charged T-shirt and a negatively charged beach ball will repel each other, so Tori should change "attract" to "repel" for these objects.
Explanation:
what is the generic equation for a combustion reaction?
Answer:
The generic equation for a combustion reaction is AB + O2 à AO + BO
Explanation:
What is electrical energy? Give an example.
Answer:
Specific examples of electrical energy include:
Alternating current (AC)
Direct current (DC)
Lightning
Batteries
Capacitors
Energy generated by electric eels
Explanation:
Electrical energy used for electric power, such as wall current used to power a light bulb or computer, is energy that is converted from electric potential energy. This potential energy is converted into another type of energy (heat, light, mechanical energy, etc). For a power utility, the motion of electrons in a wire produces the current and electric potential.
A battery is another source of electrical energy, except the electrical charges may be ions in a solution rather than electrons in a metal.
Biological systems also use electrical energy. For example, hydrogen ions, electrons, or metal ions may be more concentrated on one side of a membrane than the other, setting up an electrical potential that can be used to transmit nerve impulses, move muscles, and transport materials.