Answer:
A
Explanation:
using process of elimination, B would be, and I forget, but I think it's the controlled variable or one type of variable. C would be analysis or just data I guess. and D would be hypothesis
Where is the Oort cloud located?
in the innermost region of the solar system, closest to the Sun
in the outermost region of the solar system, beyond Neptune
in the region between the Kuiper belt and the scattered disk
in the region beyond Neptune, but closer to the Sun than the Kuiper belt
Answer:
Option B - in the outermost region of the solar system, beyond Neptune.
Explanation:
The Oort Cloud is an extended shell of icy objects that exist in the outermost reaches of the solar system.
Answer:
b
Explanation:
i took the test
what were J.J thomson's ideas called
Answer: the plum pudding model
Explanation:
for A P E X i just took the test
The main product of the photosynthesis reaction is
OA.
protein.
OB.
sugar.
Oc.
fat.
OD.
DNA.
Answer: Sugar
Explanation: Because after photosynthesis (Carbon dioxide, water, and sunlight) react, they make two products. Glucose (A sugar) and Oxygen.
why does oil and water have different properties
Answer:
Due to their densities.
Explanation:
Answer:
Liquid water is held together by hydrogen bonds. (Liquid water has fewer hydrogen bonds than ice.) Oils and fats not have any polar part and so for them to dissolve in water they would have to break some of water's hydrogen bonds. Water will not do this so the oil is forced to stay separate from the water.
Explanation:
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which group of mamaals has the most mebers
Infraclass: Placentals
Placental mammals are the most diverse group of mammals with about 4000 discovered species.
Explain why a flash of green light made flubber so energetic
Answer:
The flash of green light may give off some type of energy that only emits from green light which probably energizes the Flubber
Explanation:
A flubber is a rubber like polymer that absorbs and amplifies energy. A flubber absorbs energy from a light source and electrons present in it are excited in order to emit light of higher wavelength. The green light absorbed by the flubber to emit longer wavelength of light emitting more energy.
Ionic compounds conduct electricity In?
Answer:
Ionic compounds conduct electricity when molten (liquid) or in aqueous solution (dissolved in water), because their ions are free to move from place to place. Ionic compounds cannot conduct electricity when solid, as their ions are held in fixed positions and cannot move.
Explanation:
In carbon dioxide, London dispersion forces are the only intermolecular forces of
attraction.
a. TRUE
b. FALSE
Answer:
true
Explanation:
CO has two C-O bonds. The dipoles point in opposite directions, so they cancel each other out. Thus, although CO₂ has polar bonds, it is a nonpolar molecule. Therefore, the only intermolecular forces are London dispersion forces.
PLEASE HELP ASAP!
The sample of gas is in a container with a fixed volume. A student notices that as the temperature increases so does the
pressure. This is a(n) ___
relationship.
There aren’t any answer choices.
Answer:
Direct
Explanation:
Edge
When the temperature increases with an increase in pressure, it is a direct relationship.
What is Gay Lussac's law?Gay-Lussac's law can be described as when the volume of the gas remains constant then the pressure of a gas is directly proportional to the absolute temperature of the gas.
The mathematical equation of Gay Lussca's law is written as follows:
P/T = k
It can be represented as the pressure is directly proportional to the absolute temperature.
P ∝ T (where 'V' volume of gas is constant)
or
[tex]\frac{P_1}{T_1} =\frac{P_2}{T_2}[/tex]
Where P₁ and T₁ are the initial temperature and pressure while P₂ and T₂ are the final pressure and temperature of the gas.
The sample of gas has a fixed volume of gas and on increasing the temperature the gas molecules acquire more and more kinetic energy. So the pressure of the gas will also increase.
Therefore, there will be a direct relationship between temperature and pressure of gas.
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ANSWER AS SOON AS POSSIBLE PLEASE!!!! Which type of water represents the largest percentage of earths water?
Answer:
im pretty sure its groundwater just read this and see the answer
Explanation:
The ocean holds about 97 percent of the Earth's water; the remaining three percent is found in glaciers and ice, below the ground, in rivers and lakes. Of the world's total water supply of about 332 million cubic miles of water, about 97 percent is found in the ocean.
The energy required to break the bonds for an exothermic reaction to occur is called the _ energy.
Answer:
This stored chemical energy, or heat content, of the system is known as its enthalpy.
Explanation:
Due to the absorption of energy when chemical bonds are broken, and the release of energy when chemical bonds are formed, chemical reactions almost always involve a change in energy between products and reactants.
Intermolecular forces do not have any effect on determining the physical properties of
substances such as surface tension and melting point.
True or false
Answer:
False
Explanation:
The physical properties of melting point, boiling point, vapor pressure, evaporation, viscosity, surface tension, and solubility are related to the strength of attractive forces between molecules. These attractive forces are called Intermolecular Forces.
a Gardner crosses a plant with red flowers with one with white flowers. each plant is pure for its trait for flower color
if the gene for the flower color shows incomplete dominance what kind of coloring will the flower on the offspring plants most likely have
a. white and red
b. red only
c. pink only
d. white pink
Answer:
Pink only
Explanation:
AP3X
Please Help! I Really Really Need It!
Answer:
The picteure isnt lodeing
Explanation:
mark brainly
I NEED HELP RN 40 POINTS
Answer:
B.) Adding a source of carbon dioxide to the water.
Explanation:
I had that question too.
What percent of the ocean is the element phosphorus ?
Answer:
It delivers annually about 1.5 Mt of dissolved phosphorus and more than 20 Mt of suspended phosphorus into the ocean. Up to 80% of the suspended phosphorus incorporated in the lithogenic material precipitates within submarine continental margins.
Explanation:
List the metals and non metals in CBr4
Answer:
Metals: Carbon,
Non-mental: bromine
Please help due today
11. A student is studying guppies, a type of fish. The student learns
that common guppies normally live in water with temperatures from
22°C to 30°C. The student counts the number of movements in 1
minute at several different temperatures. According to the student's
graph, about how many movements on average would the guppies
most likely make at 30°C?
Need help. Is this correct
Answer:
Yes, that is correct!
Explanation:
Answer:
Yes
Explanation:
A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms. These electrons are simultaneously attracted by the two atomic nuclei. A covalent bond forms when the difference between the electronegativities of two atoms is too small for an electron transfer to occur to form ions.
HELP I HAVE TO SUBMIT IN 5 MINS!!!!!!! :( I HAVE NO IDEA!!!
Number of H in 3(NH4)2Cro4
The number of H atoms in 3(NH₄)₂CrO₄ = 24
Further explanationThe empirical formula is the smallest comparison of atoms of compound forming elements.
A molecular formula is a formula that shows the number of atomic elements that make up a compound.
(empirical formula) n = molecular formula
Subscripts in the chemical formula indicate the number of atoms
The compound of 3(NH₄)₂CrO₄ ( 3 molecules of (NH₄)₂CrO₄ ) :
Number of H :
[tex]\tt 4\times 2(subscript)\times 3(coefficient,number~of~molecules)=24~atoms[/tex]
The number of Hydrogen (H) atoms in the compound, 3(NH₄)₂CrO₄ is 1.44×10²⁵ atoms
How to determine the mole of HMole of 3(NH₄)₂CrO₄ = 1 mole Mole of H in 3(NH₄)₂CrO₄ = 3 × 8 = 24 moles How to determine the number of atomsFrom Avogadro's hypothesis,
1 mole of H = 6.02×10²³ atoms
Therefore,
24 moles of H = 24 × 6.02×10²³
24 moles of H = 1.44×10²⁵ atoms
Thus, the number of atoms of H in 3(NH₄)₂CrO₄ is 1.44×10²⁵ atoms
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In carbon dioxide, how many grams of oxygen would there be if there are 24
grams of carbon?
a 55 g
b 73 g
c 64 g
d 88 g
Answer:
c. 64 grams
Explanation:
What is the proper combining ratio (by mass) for carbon to oxygen in the reaction that forms carbon dioxide (CO 2)? From the data given in question 1, since 64 grams of oxygen reacts with 24 grams of carbon, the ratio must be 64 to 24, which is 2.7 parts oxygen to 1 part carbon.
HELP PLEASE , I NEED A A ON THE TEST I’ll give brain
Answer:
left
Explanation:
8 has the strongest force
What kind of reaction is KI(ag) + AgNO3 (aq) → Agl(s) + KNO3aq)?
A. A decomposition reaction
B. A synthesis reaction
C. Asingle-replacement reaction
D. A double-replacement reaction
Answer:
D
Explanation:
D is the correct answer
Which of the following properties would a substance that has metallic bonding
normally have?
I. thermal conductivity
II. electrical conductivity
III. malleability
IV. ductility
Answer:
I, II, III,IV
Explanation:
Metals are known to possess metallic bonds. In a metallic bond, electro-positive metals loose electrons which form a cloud of electrons which exerts an attractive force on the positive metallic ions. This attractive force holds the metal atoms together in the crystal lattice.
The physical properties of metals include;
I. thermal conductivity
II. electrical conductivity
III. malleability
IV. ductility
Hence, substances that exhibit properties I-IV are metals and have metallic bonds.
The following properties which a substance that has metallic bonding
normally have include
thermal conductivityelectrical conductivitymalleabilityductilityMetals are elements which have metallic bonding which is always strong as
it helps to form a lattice.
Metals are good conductors of heat and electric current , they can also be
bent in to different shapes . This means it has all the properties listed above.
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what is the chemical formula for lithium chloride
Answer:
LiClExplanation:
chemical formula for lithium chloride is LiClhope it helps
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Which of the following shows the correct order of the levels of classification form Largest to smallest
which of the following elements has the lowest ionization energy?
a. Argon
b. Hydrogen
c. Beryllium
d. Hellium
Among the given options, the element that has the lowest ionization energy is beryllium. Thus, the correct option for this question is C.
What do you mean by Ionization energy?Ionization energy may be defined as the amount of energy that is significantly required in order to eliminate an electron from an isolated atom or molecule. It is the minimum energy required to remove the most loosely bound electron of an isolated gaseous atom, positive ion, or molecule.
The group of elements that have the lowest ionization energy is known as alkali metals or alkali earth metals. This is because of the shielding effect that the ionization energy decreases from top to bottom within a group. Beryllium is a member of group 2 which has the lowest ionization energy. While Fluorine is said to have the highest ionization energy.
Therefore, the element that has the lowest ionization energy is beryllium. Thus, the correct option for this question is C.
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which CHEMICAL REACTION IS FASTEST
Answer:
b. bread turns brown in the toaster
Answer:
B
Explanation:
Bread turns brown in a toaster really fast. But with the other stuff it takes forever.
