Answer:
A
Explanation:
distance over time is speed's equation
When Brian first sorted out his thoughts, he figured this was the first day after the crash and what did he think would happen next?
It should be noted that when Brian first sorted out his thoughts, the first thing that he thought would happen next is that he would probably be rescued that day.
It should be noted that in Chapter 5 of Hatchet, Brian wakes up in the forest and then, he realized that he was desperately thirsty.
When Brian first sorted out his thoughts, he figured this was the first day after the crash and that he would probably be rescued that day. He believed that he was going to wither up and die if he doesn't get anything that he'll drink.
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will give brainlist to a person with correct answers for all (please help me)
1. Explain how is LiCl formed?
2. What is a combination/synthesis reaction
3. What is a decomposition reaction?
4. What is a single-replacement reaction?
5. What is a double-replacement reaction?
6. What are the trends in electronegativity within groups and across periods in the periodic table?
7. Which element has the lowest electronegativity value?
8. How does electronegativity determine the type of bond that atoms will form?
9. What type of bond will form between 2 atoms that have a large difference in electronegativity?
10. What type of bond will form between 2 atoms when the difference in electronegativity is 0.5?
11. Which element has the highest electronegativity value?
12. What does it mean that matter cannot be created nor destroyed in a Chemical reaction?
Answer:
1. LiCi is formed by the treatment of lithium carbonate with hydrochloric acid
2. A combination reaction (also known as a synthesis reaction) is a reaction where two or more elements or compounds (reactants) combine to form a single compound (product).
3. Chemical decomposition, or chemical breakdown, is the process or effect of simplifying a single chemical entity into two or more fragments.
4. A single-displacement reaction, also known as single replacement reaction or exchange reaction, is a chemical reaction in which one element is replaced by another in a compound
5. Double replacement reactions have two ionic compounds that are exchanging anions or cations.
6. The most electronegative elements are found on the top right of the periodic table.
7. cesium
8. Electronegativity describes the degree to which an atom attracts electrons in a chemical bond. But the electronegativity of two atoms would determine their bond type.
9. ionic bond
10. polar covalent bond
11. fluorine
12. Matter can change form through physical and chemical changes, but through any of these changes, matter is conserved. The same amount of matter exists before and after the change.
Hope i was able to help!!!
why must a ph meter be calibrated by using a solution with a known ph value
Answer:
A pH calibration is the process of adjusting your pH meter by measuring solutions of a known pH value. This is because the characteristics of your electrode will change over time and this needs to be compensated for. A calibration does this by matching your pH meter to the current characteristics of your pH sensor.
Explanation:
why does fluorine have the highest electronegativity
Answer:
- Fluorine has 5 Electrons in its 2P shell
- Fluorine is so close to ideal Electron Configuration, the Electrons are held very tightly to the Nucleus.
Explanation:
Hopefully this was helpful!
Alison observes that when she injects additional gas molecules into a container of gas, the number of collisions in the container (and the pressure inside) increases. She then increases the volume of the container just enough to restore it to its original pressure. Which of the following laws best describes what Alison observed?
A. Amonton's Law
B. Avogadro's Law
C. Boyles Law
D. Charles's Law
E. Dalton's Law
Answer:
Explanait it is not d
pls some one help
1 mark question
Answer:
The atomic number of Chlorine(Cl) is 17 and the electronic configuration is 2,8,7 with seven electrons in the valence shell.
Hope that helps. x
Answer:
See below
Explanation:
Chlorine has 17 electrons in it's shell.
(See the attached file to get the idea of what subshell would be filled first).
The accommodations:
s = 2 electrons
p = 6 electrons
d = 10 electrons
f = 14 electrons
Now, the electronic configuration of chlorine:
1s²2s²2p⁶3s²3p⁵
(2+2+6+2+5 = 17 electrons)
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807fe3(so4)3->fe(oh)3->fe2o3->fe->feso4->fecl2
Answer: Id answer it but i think your copy and paste got corrupted!
Explanation:
What is an example of thermal energy
A) batteries moving a toy
B) riding a bicycle
C) plugging in a tv
D) using an oven to cook
How many atoms are in 2 moles of oxygen?
Answer:
6.02 × 1,023
Explanation:
One mole of oxygen gas, which has the formula O2, has a mass of 32 g and contains 6.02 X 1,023 molecules of oxygen but 12.04 X 1,023 (2 X 6.02 X 1,023) atoms, because each molecule of oxygen contains two oxygen atoms.
Jeremy left his bike outside overnight. When he woke up in the morning, there were water drops on the seat. When he went to ride his bike after lunch, he saw the water drops had disappeared. Which statement best describes what happened to the water?
A. The energy from the sun caused the water drops to condense.
B. The energy from the sun caused the water on the seat to boil.
C.The energy from the sun cooled the water, causing it to evaporate.
D.The energy from the sun heated the water, causing it to evaporate.
Answer:
D
Explanation:
a,b, and c wouldn't cause the reaction that Jermey expirenced
Synthetic fibers, like plastic, are derived from organic compounds. These fibers have been chemically changed by humans to last longer for better storage and more effective uses. These fibers are stronger than naturally occurring fibers like cotton and wool. Which of the following is a downside to these synthetic fibers when compared to natural fibers?
A.
The longer lasting material is more difficult to break down.
B.
The longer lasting material is less useful in manufacturing.
C.
The longer lasting material is not able to withstand high temperatures.
D.
The longer lasting material makes the fibers more expensive to buy.
The downside of this is that the longer lasting material is more difficult to break down.
Both natural fibers and synthetic fibers are polymer materials. Polymer materials are materials that are made by the agglomeration of small molecules called monomers.
The natural fibers are less long lasting than the synthetic fibers. The downside of this is that the longer lasting material is more difficult to break down. As a result of these, synthetic fibers lead to environmental pollution problems.
Learn more: https://brainly.com/question/25140263
Answer:
the longer lasting material is more difficult to break down.
Explanation:
calculate the molarity of a 50.0 ml of a 0.150 m hcl solution when 30.0 ml of water is added.
Answer:
0.09375 M
Explanation:
You want to use the following equation:
M1*V1=M2*V2
Then plug in the 50ml to V1 and 0.15M to M1 and 80ml to V2 (add the 50 and 30). The next thing you want to do is change the mL to liters, since Molarity is moles/liter. Once that is done, solve algebraically for answer.
** Also don't forget to capitalize the M when you mean Molarity, because it is different than m.**
Hope this helps!
Round off your answer to one decimal place.
Answer: 10.4
Explanation:
ph is just as follows:
[tex]pH = -log[H_{3}O^{+}][/tex]
So plugging in our concentration we get:
[tex]-log(4.45*10^{-11})=10.35163999...[/tex]
Then rounding to one decimal place takes us to pH = 10.4
does Waves move in a circular motion.
True or false
why yes
Waves are created by energy passing through water, causing it to move in a circular motion
What is the formula for the compound?
Answer:
the correct answer is CO2 (the last one)
When a solution of cesium chloride (CsCl) is subjected to high-speed centrifugation, a stable density gradient is formed.
a. True
b. False
Find the actual yield when the theatrical yield is 1.09g and percent yield is 90%.
Calculate the number of moles in 1.622 grams of boron.
Answer:
0.147
Explanation:
Moles equals mass over AR/MR so 1.662 over 11 gives 0.147
An atom's electron configuration ends with 3p4. If another atom has seven more electrons, what would be the continuation of the electron configuration?
The continuation of the electron configuration would be [tex]3p^6, 4S^2, 3d^3[/tex].
The initial p orbital is partially filled. Hence, it has to be completely filled first in order to obey the orbital filling rule. Lower energy orbitals are first filled before higher energy orbitals.
After filling the p orbital with 2 electrons from the remaining 7 electrons, higher energy orbital 4s and 3d can then be filled.
More on electron configuration can be found here: https://brainly.com/question/1255220?referrer=searchResults
Answer:
3p^6 4s^2 3d^3
Explanation:
Prokaryotic and Eukaryotic Cells Booklet
Answer:
Power Plant = Mitochondria (Mitochondria is the powerhouse of the cell)
City Limits = Cell Membrane (Outer layer of a cell)
City Hall = Nucleus (The nucleus is the control center in a cell)
City Food Processing Plant (Chloroplast process the cells food)
City Plans = Chromosomes (They contain the genetic information about the cell)
Community = Cytoplasm (Mainly process of elimination)
Explanation:
Explanations are in parenthesis
Why does Alex’s equation better represent the reaction?
Answer : it has been tested
Explanation:
i took the test
A solution is prepared by dissolving 15.0 g of table salt in 70.0g of water. Find(a) the mass percent of solute and (b) the mass percent of solvent.
Answer:
[(15g NaCl/(70+15)]*100 = % NaCl
{(70g H2O/(70+15)]*100 = % H2O
Explanation:
A solution is prepared by dissolving 15.0 g of table salt in 70.0g of water. (a) The mass percent of solute is 17.64 % and (b) The mass percent of solvent is 82.35 %.
How to calculate the Mass percent of solute ?Mass percentage = [tex]\frac{\text{Mass of solute}}{\text{Mass of solute + Mass of solvent}}[/tex] × 100
How to calculate the Mass percent of solvent ?Mass percentage = [tex]\frac{\text{Mass of solvent}}{\text{Mass of solute + Mass of solvent}}[/tex] × 100
Here,
Mass of solute (table salt) = 15.0 g
Mass of solvent (water) = 70.0 g
(a) The mass percent of solute
Put the value in above formula we get
Mass percentage = [tex]\frac{\text{Mass of solute}}{\text{Mass of solute + Mass of solvent}}[/tex] × 100
= [tex]\frac{15}{15 + 70}[/tex] × 100
= [tex]\frac{15}{85}[/tex] × 100
= 17.64 %
(b) The mass percent of solvent
Mass percentage = [tex]\frac{\text{Mass of solvent}}{\text{Mass of solute + Mass of solvent}}[/tex] × 100
= [tex]\frac{70}{15 + 70} \times 100[/tex]
= [tex]\frac{70}{85} \times 100[/tex]
= 82.35 %
Thus, we can say that (a) The mass percent of solute is 17.64 % and (b) The mass percent of solvent is 82.35 %.
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The last layer in layered design is _____________. Object Process None of the options Atoms Sub process
The last layer in the layered design is system layer so none of the above is the correct option.
Robotic Process Automation is a software technology that make use of some programs of computer to copy or mimic the behaviors of human when it has access with them. They been use effectively and ensure the work is perfectly done.
There are layers in the Robotic process automation but the last layer is System layer.
They can handle high volume of tasks.
The lowermost layer is associated with individual screen interactions. The lowermost layer in the layered design of Robotic process automation is the component layer or system layer . The Robotic Process Automation and this form technology is in robots creation.
Therefore, The last layer in layered design Is System layer so none of the above is the correct option.
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What products are obtained by the electrolysis of CuSO4 solution using copper electrode ? Show with help of chemical reaction.
Answer: The products will be copper and oxygen.
Explanation: Copper electorde is an active electrode so it constantly takes part in the electrolysis. Cathode is a pure copper negative electrode and anode is a impure copper positive electrode. So the copper present in the solution, along with the copper present in the anode will come off and go to the cathode. As a result, cathode gains copper. And the remaining impurities settle down in the bottom.
In the anode, oxygen will be given off because according to the order of discharge, if SO4 is present then the ions will stay in the solution and oxygen will be released. So at the end, solution of SO4 and H2O will be remaining while copper and oxygen is extracted.
The half equations are-
Cathode: Cu2+ + 2e- = Cu
Anode: Cu + 2e- = Cu2+
Something you might not know: The solution in electrolysis turns blue when copper goes to the cathode. So copper electrodes are also used in electroplating.
explain why titanium conducts electricity
Answer:
Because they are electrical conductors because their delocalized electrons carry electrical charge through the metal. they are good conductors of thermal energy because their delocalized electrons transfer energy.
I hope it helps.
what are the relationships among bond order, bond length, and bond energy?
Explanation:
When a bond is strong, there is a higher bond energy because it takes more energy to break a strong bond. This correlates with bond order and bond length. When the bond order is higher, bond length is shorter, and the shorter the bond length the greater the bond energy.
Please help me with this
Beer Lambert Law Explanation
Answer:
The Beer–Lambert law, also known as Beer's law, the Lambert–Beer law, or the Beer–Lambert–Bouguer law relates the attenuation of light to the properties of the material through which the light is travelling.
Explanation:
Please Mark as brainliest
A scientist was in the field when he saw a mineral sample. He wanted to determine the relative hardness of the mineral, so he conducted scratch tests. He summarized his results in a table. A 2 column table with 4 rows. The first column is labeled Mineral with known hardness with entries: Chalcopyrite, pyrite, Orthoclase, Quartz. Second column is labeled Was a scratch produced? with entries: Yes, Yes, Yes, No. What conclusion can you make about the hardness of the mineral?.
The mineral hardness depends on its resistance to being scratched. Mohs scale is used to determine the hardness of an unknown mineral. The unknown mineral is harder than Orthoclase, but not harder than Quartz.
-------------------------
The hardness of a mineral is its resistance to being scratched or marked on the surface by another material.
Several elements are used to test the hardness of a mineral, like another mineral of known hardness.
Many different scales can be used to identify the mineral. However, the most commonly used is the Mohs scale.
Let us say that you have two minerals. You already know which mineral is one of them and its hardness.
If the unknown mineral scratches the known mineral, means that the first one is harder than the second one.But if the unknown mineral does not get to scratch the known one, it means they are equally hard, or the known mineral is harder than the unknown one.In the exposed example, the table must be as follows
Mineral Was a scratch produced?
Chalcopyrite YES
pyrite YES
Orthoclase YES
Quartz NO
Quartz is the hardest of these minerals. Its hardness level is 7 according to the Mohs scale.
Because scratches were produced using Chalcopyrite, Pyrite, and Orthoclase, we can assume that the unknown mineral is harder than these three ones.
However, no scratch was produced using quartz, suggesting that the unknown mineral is between orthoclase and quartz in the Mohs scale.
The unknown mineral is harder than Orthoclase, but not harder than Quartz. It is between 6 and 7 hardness levels.
---------------------------
You can learn more about the Mohs scale at
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Answer:
I can conclude that the mineral that the scientist found is harder than chalcopyrite, pyrite, and orthoclase, but not harder than quartz. I can also conclude that the unknown mineral is a relatively hard mineral.
Explanation:
edge example 2023
What is the number of atoms of oxygen in 0.1 mol of CuSO4.5H2O? & explain
Why is eating animals to obtain energy considered exothermic