Answer: is a base
Explanation:
Sonar stands for “sound navigation and ranging.” What assumption was proved wrong after the invention of sonar?
A.
The age of the ocean floor is variable.
B.
The ocean floor is featureless.
C.
The ocean floor is changing.
D.
The ocean floor is denser than continental crust.
The ocean floor being featureless was the assumption was proved wrong after the invention of sonar.
What is Sonar?This employs the use of sound propagation to measure the distance or presence of objects under the water.
This helped to show that the ocean floor had features such as canyons, mountains etc hence option B was chosen.
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Sulfur dioxide represents which of the following representative particles?
molecule
formula unit
atom
ion
Answer:
molecule
Explanation:
Sulfur dioxide represents a molecule.
A molecule is a covalent compound that has discrete or separate units. The formula of this molecule given is:
SO₂
Here, two non-metals share their valence electrons form a covalent bond.
An atom is the smallest indivisible particle of a substance that takes part in a chemical reaction. An ion is an atom that has lost or gained an electron.4.
Find the area of a rectangle whose length and width are
9.025 x 106 m and 5.215 x 10 m respectively.
-8
Answer:
0.47m²
Explanation:
Given parameters:
Length = 9.025 x 10⁶m
Width = 5.215 x 10⁻⁸m
Unknown:
Area of the rectangle = ?
Solution:
Area is the derived from the product of the length and width of a body.
Area = length x width = 9.025 x 10⁶m x 5.215 x 10⁻⁸m
Area = 0.47m²
Part b (r)–3-chloro-2-methylhexane will undergo a nucleophilic substitution reaction in the presence of sodium ethoxide and ethanol. complete the mechanism for the sn2 reaction and draw the products of the reaction. draw all missing reactants and/or products in the appropriate boxes by placing atoms on the grid and connecting them with bonds and including charges where needed. indicate the mechanism by drawing the electron-flow arrows on the molecules. arrows should start on an atom or a bond and should end on an atom, bond, or where a new bond should be created.
Answer:
See answer below
Explanation:
To understand this, we need to make the reaction involved with the given configuration. Configuration R means that the substituents of the molecule, the priority order goes clockwise (From heaviest to lightest) so, if an Sn2 is ocurring in the reaction this means that the nucleophile, which in this case, is the sodium ethoxide will attack the molecule in the opposite side of the leaving group (which is the chlorine).
Also when this occurs, as Sn2 is a bimolecular reaction and is held in one step, it occurs an inversion in the configuration of the product. So, it's the innitial reactant was R, then the final product will be S.
The mechanism and product can be watched in the attached picture
Hope this helps.
Name the following compounds and classify them as ionic or covalent.
a. Cu2CrO4
b. Ba(NO3)2
c. Cl2O
d. BrF5
The classification of the above given compounds would be listed below as follows:
a.) Cu2CrO4 = ionic
b. Ba(NO3)2 = ionic
c. Cl2O = ionic
d. BrF5= covalent
What is an ionic or covalent compound?An ionic compound are those chemical substances that are made up of both positively charged ions called cations and negatively charged ions called anions.
A covalent compound is defined as the type of chemical compound that is formed when two nonmetals react with each other. This is seen in the chemical compound BrF5 where bromine and fluorine which are both nonmetals react with each other.
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Plants use sunlight as energy to convert carbon dioxide and water into glucose and oxygen. Which best describes
the reaction?
The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the
products
O The law of conservation of energy indicates the same amount of carbon will be found in the reactants as in the
products
The law of conservation of mass indicates the same amount of glucose will be found in the reactants as in the
products
O The law of conservation of energy indicates the same amount of glucose will be found in the reactants as in the
products
Answer:
The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the products
Explanation:
The reaction between carbon dioxide and water in the presence of sunlight to produce glucose and water strictly follows the law of conservation of mass.
Let us give the reaction expression:
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
According to the law of conservation of mass, matter is neither created nor destroyed but new compounds are formed during a chemical reaction.
From the given reaction expression, we can clearly see that 6 moles of carbon on the reactant side will produce 6 moles of carbon on the product side.
Therefore, the law obeys the law of conservation of mass.
4. How many moles are in 375 L of O2?
Answer: 16.7 moles
Explanation:
Some items, such as rubber, float on the water, while some items, such as gold, sink in
the water. If an item floats is it more or less dense than the water?
Answer:
If an item is less dense, it floats on the water.
Explanation:
We know this since the more dense something it usually is heavier than if it was less dense. Which ways it down resulting to it sinking.
Aluminum is used to build aero planes. Which two of its physical properties make it suitable for this use
Answer:
Titanium is another metal that's commonly used in aerospace engineering. It's strong, lightweight, Aluminum isn't the strongest metal, but it maintains a perfect balance of strength and low weight that make airplanes fly
Explanation:
vote mee as the brainliest
Answer:
it weight were so thin
explanation
With a weight roughly a third lighter than steel, it allows an aircraft to either carry more weight, or become more fuel efficient. High Strength — Aluminum's strength allows it to replace heavier metals without the loss of strength associated with other metals, while benefitting from its lighter weight
would using a strainer be filtration?
Answer:
To some extent, yes
Explanation:
what is a solution for deforestation
(full sentences please)
The best solution to deforestation is to curb the felling of trees by enforcing a series of rules and laws to govern it. Deforestation in the current scenario may have reduced; however, it would be too early to assume. The money-churner nature of forest resources can be tempting enough for deforestation to continue.
The best solution to deforestation is to curb the felling of trees by enforcing a series of rules and laws to govern it. Deforestation in the current scenario may have reduced; however, it would be too early to assume. The money-churner nature of forest resources can be tempting enough for deforestation to continue.
A 475 cm3 sample of gas at standard temperature and pressure is allowed to expand until it occupies a
volume of 600. cm3. What temperature would be needed to return the gas to standard pressure?
The final temperature : 345 K
Further explanationGiven
475 cm³ initial volume
600 cm³ final volume
Required
The final temperature
Solution
At standard temperature and pressure , T = 273 K and 1 atm
Charles's Law :
When the gas pressure is kept constant, the gas volume is proportional to the temperature
[tex]\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]
Input the value :
T₂=(V₂T₁)/V₁
T₂=(600 x 273)/475
T₂=345 K
How does adaption allow mice with the mutation to survive better in some areas
Answer: Mutations can cause instant adaptations, while natural selection is the process by which adaptations occurs over a series of generations. Adaptations are changes or processes of changes by which an organism or species becomes better suited for its environment. A mutation is an alteration of the DNA sequence.
Explain in terms of intermolecular forces why water has an unusually high heat of fusion?
Answer:
hydrogen bonding among water molecules
Explanation:
Which of these is not a chemical property?
Answer: srry
Explanation:
2. Based on what you know about waves and light, do you think that light can be
modeled as a wave? Explain why or why not.
Answer:
Light as a wave: Light can be described (modeled) as an electromagnetic wave. In this model, a changing electric field creates a changing magnetic field. This changing magnetic field then creates a changing electric field and BOOM - you have light. ... So, Maxwell's equations do say that light is a wave.
Explanation:
Hope this helps
Answer:
Light as a wave: Light can be described (modeled) as an electromagnetic wave. In this model, a changing electric field creates a changing magnetic field. This changing magnetic field then creates a changing electric field and BOOM - you have light. ... So, Maxwell's equations do say that light is a wave.
Explanation:
Credit for 2021FOLLOWme
How many chickens would it take to kill an elephant?
Answer: One chicken with a bomb
Answer: 26,000 chickens
Explanation:
balance this
C3H3N + O2 ⇒ C + H2O + N2
Answer:
4C₃H₃N + 3O₂ → 12C + 6H₂O + 2N₂
Explanation:
The given reaction equation is expressed as:
C₃H₃N + O₂ → C + H₂O + N₂
The problem here entails balancing of the chemical reaction.
So;
assign letters a,b,c,d and e as coefficients that will balance the expression:
aC₃H₃N + bO₂ → cC + dH₂O + eN₂
Conserving C : 3a = c
H : 3a = 2d
N : a = 2e
O: 2b = d
let a = 1, c = 3, e = [tex]\frac{1}{2}[/tex] , d = [tex]\frac{3}{2}[/tex] , b = [tex]\frac{3}{4}[/tex]
Multiply through by 4;
a = 4, b = 3, c = 12 , d = 6 and e = 2
4C₃H₃N + 3O₂ → 12C + 6H₂O + 2N₂
How many grams are present in 2.5 moles of silicon
Answer:
70.21375
Explanation:
rounded to he nearest tenth place 70.2
Can someone help me with these three questions? please
Answer:
23 43 45 43
Explanation:
To locate objects in their environments, bats in flight and porpoises under water both use ultrasound waves with frequencies that are beyond human hearing. These animals produce an ultrasonic wave and then detect echoes from nearby objects in order to determine the location of the object Porpoise Bat If a porpoise and a bat both produce ultrasonic waves when they are 16 meters from an object, which animal would hear its echo first? The bat would hear its echo first because sound travels faster in air than in water. O The porpoise would hear its echo first because sound travels faster in water than in air. O The bat would hear its echo first because the frequency of sound waves is greater in air than in water 0 The porpoise would hear its echo first because the frequency of sound waves is greater in water than in air.
Answer: The porpoise would hear its echo first because sound travels faster in the water than in air.
Explanation:
Plz Plz Plz help!!!!!
Which list of elements contains a metal, a metalloid, and a nonmetal?
1) Ag, Si, I2
2) Ge, As, Ne
3) K, Cu Br2
4) S, Ci2, Ar
Between the green skinned lime and the yellow skinned lime, which of these are more acidic.
which diagram would this be?
Carbonic acid ---> water + carbon dioxide
so it's the second option
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What type of rock is limestone? Describe how a limestone rock is likely to change over a long period of time.
Answer:
Over time, the limestone is broken down into its chemical parts and may come back to the surface as volcanic CO2 (in the atmosphere). From the atmosphere, the CO2 might again become part of the biosphere by molluscs or corals absorbing the CO2 to help make their shells
Explanation:
Over a long period of time, we would take a look at the rock "limestone" through the rock cycle. Limestone being a sedimentary rock would be converted to marble, a metamorphic rock if subjected to metamorphic conditions over an extensive period of time.
Are the forces on the parachutes balanced?
A. The parachutes fall at a constant speed, so the forces are balanced.
B. There is a change in motion, so the forces are balanced.
C. The parachutes fall at a constant speed, so the forces are unbalanced.
D. There is a change in motion, so the forces are unbalanced.
Answer:
When the parachute opens, air resistance becomes much greater than gravity. The forces are no longer balanced and this changes her speed.
Explanation:
Eventually the upward force of the air equals the downward force of gravity. When forces are balanced the speed remains constant.
Please helppppppp. I need this D:
50 points
Answer:
dont u mean 13 points?
Explanation:
Given:
8CO + 17H2 → C8H18 + 8H2O
In this chemical reaction, how many grams of H2 will react completely with 6.50 moles of CO? Express your answer to three significant figures.
grams of H2 will react completely.
Answer:
- 27.6 grams of hydrogen are required.
Explanation:
How many grams of NH3 are needed to make 2.50 moles of (NH4)2SO4?
2 NH3(g) + H2SO4(aq) --> (NH4)2SO4(aq)
Answer:
85.155g NH3
Explanation:
What is happening at x ?