Look at the three kinds of houses shown in the simulation. Which house do you think will best resist damage from a tsunami? Which house will suffer the most damage from a tsunami? Do you think any of the houses will survive a large tsunami? Write down your predictions.
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Answer:
The brick house will best resist damage from a tsunami, and the straw house will suffer the most damage from a tsunami. I predict these reasons because brick has a stronger material than the rest of the houses, while the straw house has the weakest material than the rest of the houses. No, I do not think any of the houses can survive a massive tsunami because if the tsunami was 22 feet tall, the brick house would become damaged due to the lack of support. And, the other houses can't take a tsunami higher than 10 feet. The brick house can only take tsunamis less than 20 feet.
Explanation:
Try that
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Hey guys! How is the answer C? I need steps plz
Answers
What is the concentration of a solution containing 1.0 g of sodium hydroxide in 250 cm³ of solution?
A- 0.025 mol/dm³
B- 0.10 mol/dm³
C- 0.25 mol/dm³
D- 1.0 mol/dm³
Answers
Answer:
Correct option is
D-1.0mol/dm³
Mass of NaOH (m) = 1g
The volume of water (V) = 250 ml
Mol. wt of NaOH (m) = 40g/mol
Molarity (M) =M×V(ml)m×1000
M=40×2501×1000
M=101 or 0.1 M
What is the density of a 36 g object with a volume of 15 cm3? (Density: D = ) 0. 42 g/cm3 0. 54 g/cm3 2. 4 g/cm3 5. 4 g/cm3.
Answers
Answer:
2.4 g/cm3 is the correct answer.
Explanation:
Hope this helps
Write the balanced COMPLETE ionic equation for the reaction when Na₂CO₃ and AgNO₃ are mixed in aqueous solution. If no reaction occurs, simply write only NR.
Answers
Answer:
see explanation
Explanation:
Write the balanced COMPLETE ionic equation for the reaction when Na₂CO₃ and AgNO₃ are mixed in aqueous solution. If no reaction occurs, simply write only NR.
Ag (+1) + NO3(-1) + 2 Na(+1) + Co3 (-2)--> Ag2CO3 (s) + 2 Na (+1) + 2NO3(-1)
6. (04.02 MC) Two chemical reactions are shown:
A. Ca(OH)2 → CaO + H2O
B. 4K + O2 → 2K2O
Which statement is true? (4 points)
A) Both are synthesis reactions.
B) Both are decomposition reactions. C) A is a synthesis reaction, and B is a decomposition reaction.
D) A is a decomposition reaction, and B is a synthesis reaction.
Answers
A. Ca(OH)₂ → CaO + H₂O is a decomposition reaction
B. 4K + O₂ → 2K₂O is a synthesis reaction.
The correct answer to the question is Option (D) A is a decomposition reaction, and B is a synthesis reaction.
A decomposition reaction is a reaction in which a large compound is broken into two or more products for example:XY —> X + YA synthesis reaction is a reaction in which two or more substances combine to produce a single product. For exampleC + D —> CDWith the above information in mind, we conclude that:
A. Ca(OH)₂ → CaO + H₂O is a decomposition reaction
B. 4K + O₂ → 2K₂O is a synthesis reaction.
The correct answer to the question is Option (D) A is a decomposition reaction, and B is a synthesis reaction.
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Answer:
d
Explanation:
Are crystals of different soluble solids similar?
Answers
Crystals of different soluble solids are not similar because they are amorphous and therefore do not have definite crystals.
What are crystal solids?A crystalline solid is a homogeneous solid in which the constituent particles, atoms, ions or molecules are arranged in a definite repeating pattern.
Most of the solid substances are crystalline in nature. The arrangement of particles in a crystalline solid is such that the total intermolecular force of attraction is at maximum.
Factors in which solubility depends are temperature, pH, and ionic strength.
Crystals of different soluble solids are not similar as they do not have definite crystals.
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How many silicon atoms are in a typical computer microchip (0.001 g of silicon)?
Answers
The number of silicon atoms in atypical computer chips(0.001g of silicon) is 2.14 × 10¹⁹ atoms
The atomic mass of silicon = 28.0855 amu
Using the mole concept that 1 mole = 6.022 × 10²³.
This number is called the Avogadro's number.
Therefore,
1 mole / 28.0855g of silicon contains 6.022 × 10²³ atoms of silicon
0.001 g will contain ? atoms of silicon
cross multiply
number of atoms of silicon = 6.022 × 10²³ × 0.001 / 28.0855
number of atoms of silicon = 6.022 × 10²⁰ / 28.0855
number of atoms of silicon = 2.14 × 10¹⁹ atoms
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Elige la respuesta que mejor describe cómo difieren el Monte Everest y el Valle de la Muerte.
El Monte Everest es plano y el Valle de la Muerte es el punto más alto de la Tierra.
O El Monte Everest es el punto más alto de la Tierra, y Death Valley es una montaña más pequeña.
El Monte Everest es el punto más alto de la Tierra, y el Valle de la Muerte es relativamente plano.
Answers
Answer:
El Monte Everest es el punto más alto de la Tierra, y el Valle de la Muerte es relativamente plano.
Explanation:
A doctor who specializes in treating diseases of nervous system
neurologist
nephrologist
ophthalmologist
cardiologist
Answers
What happens when potassium forms an ion?
Answers
Answer:
It loses an electron and has an octet in the next-lowest energy level
Explanation:
(what is the meaning of aids?) (what is the meaning of cushions?) (name 5 citrus fruits) ( what are antibodies?) (what are hormones?)
Answers
Answer:
Aids mean
a disease in which there is a severe loss of the body's cellular immunity, greatly lowering the resistance to infection and malignancy.
Cushions mean
a swollen floral system on which several small flowers are borne.
sweet mangogrape fruitpineapplelimelemonWhat are antibodies
this is a blood protein produced in respond to an counteracting a antigen.
What are hormones
these are chemicals that the body releases during a period of time
Explanation:
discussing the importance of the intelligence cycle in order to come up with intelligence
Answers
Answer:
Intelligence Analysis in a Cycle. Analysis resides within the larger intelligence cycle. The intelligence cycle determines the daily activities of the Intelligence Community. It starts with the needs of the intelligence "consumers' such as policymakers, military officials, and other decision makers who need intelligence for their activities.
Explanation:
can i get brainlist
Answer:
The Intelligence Community's daily activities are determined by the intelligence cycle. It begins with the requirements of intelligence "consumers," such as policymakers, military officials, and other decision-makers who require intelligence to carry out their tasks.
Explanation:
Hope it helps
How long does it take for eggs to get to room temperature
Answers
Takes 30 mins for the egg to reach room temperature
"Which type of reaction is used to measure immune complex formation almost immediately after reagent has been added by the amount of light scattered at a particular angle"
Answers
Answer:
nephelometry
Explanation:
Please mark as brainliest if this helped you
Complete the sentence. When a base is added to water, hydrogen ions __________.
Answers
Answer:
Explanation:
Decreases
Answer:
Hydrogen ions decrease. It reduces the concentration of ions.
Explanation:
Explain why oxygen relights a glowing splint?
Answers
Answer:
Oxygen gas relighting a glowing splint. The oxygen gas is produced by the decomposition of hydrogen peroxide, which is squirted into a test tube containing the decomposition catalyst manganese (IV) oxide. When the glowing splint is introduced to the test tube, it bursts back into flame when it contacts the oxygen.
Explanation:
hope its help
Oxygen relights a glowing splint due to its role as a strong oxidizer. When a glowing splint is inserted into an environment containing oxygen, it triggers a rapid combustion reaction.
Oxygen readily reacts with the fuel source on the splint (typically carbon compounds), providing the necessary oxygen molecules for the combustion process.
This exothermic reaction releases heat and light energy, causing the splint to re-ignite.
Oxygen's ability to support combustion is vital for many natural processes and industrial applications, as it enables the release of energy stored in various substances, highlighting its importance in sustaining life and various chemical reactions.
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Which are characteristics of matter? (Select all that apply)
A. Created from mixtures
B. Takes up space
C. Makes up atoms
D. Has mass
Answers
Answer:
B and D.
Explanation:
Matter takes up space and has mass.
Answer:
B and D
Explanation:
It is because matter is anything that has mass (weight) and can occupy space
A precious metal is _________________ a. An element with super and electric and thermal conductivity, high luster, and sensitivity. B. A highly sought after dense, shiny, soft precious metal that has been used as money for many centuries. C. An highly valuable element with super and electric and thermal conductivity, high luster, and sensitivity. D. A soft, sensitive, and lustrous element with the highest conductivity of any element. Please select the best answer from the choices provided A B C D.
Answers
Answer:
c.
an highly valuable element with super and electric and thermal conductivity, high luster, and sensitivity.
Explanation:
A precious metal is a highly valuable element with super and electric and thermal conductivity, high luster, and sensitivity, hence option C is correct.
How precious metal is differed from the base metal?Rare metallic chemical elements with a high economic value are known as precious metals. The valuable metals are often less reactive chemically than most elements.
Iron-free metals and alloys are not considered base metals. Base metals have a propensity to tarnish, oxidize, or corrode with time or when exposed to the environment, in contrast to valuable metals.
Base metals typically cost less than precious metals since they are more plentiful in nature and sometimes easier to mine.
Therefore, a precious metal is a highly valuable element with super and electric and thermal conductivity, high luster, and sensitivity.
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What happens to the speed of the particles of the physics book?
Answers
Answer:
the physics book particales speed up and when you move the chemistry book
Answer:
The speed of the particles of the physics book increases when the chemistry book slides across the physics book.
Explanation:
i got it right when i did this
what type of bond is between H2?
Answers
Explanation:
covalent bond enjoy your anseer
the balloon was filed with perfume. How did the fragrance get out from the balloon? Name the process occured??
Answers
Answer:
what tell me in your mojule
Explanation:
mmmmm
hi. can you help me
Answers
2. Helium, He, 4, 2 and 2
3. Beryllium, 4, 5 and 5
4. Nitrogen, 7, 14 and 7
5. Neon, 10, 20 and 10
6. Aluminum, 13, 27 and 13
7. Sulfur, S, 16, 16 and 16
8. Boron, B, 5, 6 and 5
9. Oxygen, O, 8, 16 and 8
10. Sodium, 11, 12 and 11
11. Silicon, Si, 14, 14 and 14
12. Chlorine, 17, 35 and 17
13. Lithium, Li, 3, 7 and 3
14. Carbon, C, 6, 6 and 6
15. Fluorine, 9, 9 and 10
16. Magnesium, 24, 12 and 12
17. Phosphorus, 15, 31 and 15
18. Argon, Ar, 40, 18 and 18
19. Calcium, 20, 40, 20, 20 and 20
20. Potassium, K, 19, 39, 19, 20 and 19
Hope it helps, the element names are to help you with locating it, the numbers are to fill in.
20. At STP, an element that is a solid and a
good conductor of heat and electricity
could have an electron configuration of
(1) 2-7
(2) 2-8-8
(3) 2-8-5
(4) 2-8-18-2
20
Answers
Answer:
4
Explanation:
Zinc
what are the only elements that exist in nature as uncombined
Answers
Answer:
The noble gases (Argon, Neon, Xenon, Helium, Krypton, Radon)
A car travels 76 km/hr for 11 hours. How far did the car travel in this time period (in kilometers)?
Answers
Answer:
836 km
Explanation:
76*11=836
Answer:
836km
Explanation:
76km/hr = 76×1000÷3600= 190/9 m/s
11hours =39600 s
Distance=speed×time
Distance=190/9 × 39600= 836,000m
So distance is 836,000m or 836 km.
This method is possible only if body is moving linearly and the velocity is constant.
If there is uniform acceleration use Newton's laws of motion.
If is acceleration is varying then use calculus methods.
Solve the following problem. What is the mass of the object if it has a density of 657 g/mL and a volume of 32 mL?
Answers
Answer:
21,024 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volume
From the question we have
mass = 657 × 32 = 21,024
We have the final answer as
21,024 gHope this helps you
The process of burning means to react a substance with:
Answers
Metals usually lose electrons
and become
Answers
Answer:
A positive ion
Explanation:
when an atom losses an ion it become positive while when an atom gains an atom it becomes negative
An alkyne with the molecular formula C5H8 was reduced with H2 and Lindlar's catalyst. Hydroboration-oxidation of the resulting alkene afforded a primary alcohol. What is the IUPAC name of the alkyne starting material
Answers
Since the addition of the H2O in the last step of hydroboration is anti-Markovnikov, the starting material is 1-pentyne.
The addition of H2 to C5H8 yields an alkene when a Lindlar catalyst is used. Recall that the Lindlar catalysts poisons the process so that the addition do not go on to produce an alkane.
When hydroboration is carried out on the alkene, we are told that a primary alcohol was obtained. We must note that in the last step of hydroboration, water is added in an anti- Markovnikov manner to yield the primary alcohol. Hence, the starting material must be 1-pentyne as shown in the image attached.
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When Newton started studying gravity, the concept of gravity was already in place.
A. True
B. False