Which statement is true about water's density and the survival of marine life? view attachment
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Related Questions
what is th correct chemical symbol for nitrogen
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Answer:
The correct symbol for Nitrogen is N.
Explanation:
I do A P E X.
. The compound containing both ionic and covalent bond is
A)AIBr3;
B) Cao
C) MgCl2
D) NH4cl
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Explanation:
The compound with both ionic and covalent bonds is Ammonium chloride (NH4Cl).
M. element
cenabrecht
0.5 mele of an
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Answer:
Number of moles (n)=
molecular weight
weight
Weight=n×Molecular weight
=0.5×14
Mass=7g
Which of these questions is testable in a scientific investigation?
A .Are plastics more toxic than wood when burned?B.Are mountains more beautiful than oceans?
C.Is science a better
subject to study than foreign language?
D.Does a red rose smell better than a pink rose?
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Answer:
A
Explanation:
it is A because all of the other ones are opinions.
Answer:
A
Explanation:
2×21=how many are there
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2 * 21
= 42
Drag the tiles to the correct boxes to complete the pairs.
Match the genetic mutations with their names.
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Answer:
See below!
Explanation:
Translocation ⇒ CCGGTT + TTAGGC = CCGGTA + GTTGGC
A translocation is a change in location between two chromsomes.
Inversion ⇒ CTTAAT = TAATTC
An inversion is when a gene is flipped.
Deletion ⇒ CGAGGTT = CGTT
A deletion is when a part of gene is deleted.
Duplication ⇒ ATTCGG = ATTCGGATTCGG
A duplication is when a gene is duplicated.
Insertion ⇒ CTTAAT = CTTAACGCT
An insertion is when nucleotide bases are inserted into a gene.
Substitution ⇒ CGAT = CTAT
A substitution is when part of a gene is replaced with a different base pair.
what does the slope of a distance vs time graph tell you? yes
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Answer:
an increase of acceleration or decrease of acceleration
Explanation:
All of the following are alkaline earth metals except.
A) Barium
B) Calcium
C) Sodium
D) Magnesium
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C) sodium
What is the sodium sulfide positive ion and negative ion?
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Answer:
Poyo
Explanation:
What kind of bonding would exist between
sulfur and hydrogen?
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Answer:
nonpolar covalent
Explanation:
Comparing their electronegativities will help determine the type of bond. Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. The difference in electronegativity (ΔEN) is used to determine bond type. Hydrogen has an electronegativity of 2.20 and sulfur has 2.58. The difference is 0.38,so the electrons are shared in a nonpolar covalent bond.
what is the difference between saturated and unsaturated hydrocarbons
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Answer:
Unlike saturated hydrocarbons in which all hydrogen atoms and carbon atoms are bonded together with single bonds, unsaturated hydrocarbons have double or even triple bonds between the carbon atoms.
Can I have an answer for this?
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Mass of Aluminium: 27 [tex]\frac{gm}{mol}[/tex]
Mass of Ferous Oxide: 71.84 [tex]\frac{gm}{mol}[/tex]
Aluminium: 7.5 Moles Given
How many moles of Iron (II) oxide(FeO)?
_____________________________________SOLUTION:As there are 2 moles of aluminium involved and 3 moles of ferrous oxide So,
2 moles Al and 3 moles FeO
7.5 moles Al and x moles FeO
For X moles:
X = [tex]\frac{3\ x\ 7.5 }{2}[/tex]
X= [tex]\frac{22.5}{2}[/tex]
X= 11.25 [tex]\frac{gm}{mol}[/tex]
_____________________________________Best Regards,'Borz'Please respond, will give brainliest to best answer! (multiple choice)
The ion with the smallest radius is
a. Br-
b. Cl-
c. I-
d. F-
e. O2-
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Answer:
D. F-
Explanation:
Br - 185pm
Cl - 175pm
I - 198pm (I'm not sure what "I" is but I guess it is iodine)
F - 147pm
[tex]O_{2}[/tex] - 152pm
=> The ion with the smallest radius is F - 147pm
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Answer is:
either A, or D
Explanation:
Write three points that how chemical fertilizer impact the environment
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Answer:
Chemical fertilizer impact the environment by the following ways:
Their overuse hardened the soilIt causes soil pollution.It decreases fertility of the soil and strengthen pesticides.A saturated aqueous solution of sucrose contains 200 grams of sucrose and 100 grams of water. Which is the solvent: sucrose or water?
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Answer:
The solvent is water
Explanation:
The solvent is the substance in the mixture that is able to dissolve the other substances. The solvent is usually the liquid.
In the problem is said: "A saturated aqueous solution", that means the solution is made by a solute that is in excess (Sucrose) dissolved in the solvent (Water).
The solvent is water
A 30 kg wrecking ball was dropped from different heights.
30 kg Wrecking ball
Height dropped
Speed at impact
Energy at impact
Distance Object is moved
Trial 1
5m
9.9 m/s
1470 J
0 cm
Trial 2
7m
11.71 m/s
2058 J
3 cm
Trial 3
15m
17.15 m/s
4410 J
55 cm
Trial 4
25m
22.14 m/s
7350 J
120 cm
What is the relationship between drop height and energy at impact?
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It may be harmful when people compete to see who can hold their breath the longest underwater. Without oxygen, brain cells *
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Answer: Without oxygen, brain cells cannot make enough ATP.
Explanation:
Hypoxia is a condition that occurs due to low levels of oxygen. In conditions such as holding of breath for a long period of time, the oxygen carrying haemoglobin ( oxyhaemoglobin) breaks down, releasing oxygen to the body tissues, which constantly consumes oxygen keeping the levels low.
In the presence of decreased oxygen supply, autoregulatory mechanisms that control the blood flow to the brain by adjusting the diameter of the arterioles fails. The consequent rapid decrease in the cerebral blood supply leads to hypoxia and lack of glucose( decreased ATP production). If severe hypoxia is sustained for more than a few minutes, this could lead to irreversible brain damage.
Therefore, It may be harmful when people compete to see who can hold their breath the longest underwater.
Without oxygen, brain cells die as a result of the cells being unable to
metabolize glucose.
The brain is an important organ that controls almost all the activities that
takes place in the body. They have cells which converts the glucose to
energy which is needed for day to day activities.
When there is no oxygen, glucose isn't metabolized and energy is deficient.
The brain cells won't be able to function and then causes its cells to die
thereby resulting in brain damage.
Read more on https://brainly.com/question/20333433
What type of element makes a positive
cation?
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Answer:
The answer would be Metals.
What does percent composition tell you about a molecule?
A. It tells you how much of a molecule is made up of each element.
B. It tells you the ratio of elements in the molecular formula.
C. It gives you the total number of atoms in the molecule.
D. It tells you how the lements are arranged in the molecule.
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Answer:
a
Explanation:
what is the wavelength of a 250Hz wave traveling station speed of 350 m/s
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Explanation:
ok....m.m....... nm...m
what kinds of bonds are found in a sample of H2O(s)?
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Answer:
a covalent bond? is that what you mean?
Explanation:
How many atoms of S are there in the reactants?
Sg + F2 ---> SFO
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Answer:
One atom
Explanation:
How do waves travel through space?
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Explanation:
Electromagnetic waves are waves which can travel through the vacuum of outer space. Electromagnetic waves are created by the vibration of an electric charge. This vibration creates a wave which has both an electric and a magnetic component.
please help me i willgive brain list
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Answer:
the molecular formulas of:Butane is C4H10butene is C4H8Butyne is C4H6.Hexane is C6H14Hexene is C6H12Hexyne is C6H10hope it helps........12. Study the chemical reaction below, what are the product(s) in the reaction and what are the reactant(s) in the reaction (Short answer)
Aluminum + copper chloride ---> copper + aluminum chloride
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Explanation:
The reactants are Aluminium and Copper chloride.
The products are Copper and Aluminium chloride.
explain faraday's law
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Explanation:
Faraday's Law of Induction describes how an electric current produces a magnetic field and, conversely, how a changing magnetic field generates an electric current in a conductor. ... Magnetic induction makes possible the electric motors, generators and transformers that form the foundation of modern technology.
Please help me answer Question 1.
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Answer:
9 moles of oxygen are produced from 6 moles of potassium chlorate.
Explanation:
Given data:
Number of moles of KClO₃ = 6 mol
Number of moles of oxygen produced = ?
Solution:
Chemical equation:
2KClO₃ → 2KCl + 3O₂
now we will compare the moles of KClO₃ and O₂.
KClO₃ : O₂
2 : 3
6 : 3/2×6 = 9
Thus, 9 moles of oxygen are produced from 6 moles of potassium chlorate.
What type of change occurs as salt dissolves in water?
a)phase change
b)element change
c)physical change
d)chemical change
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Answer :-
C) Physical change
Which type of cloud can sometimes be found in a layer other than the troposphere
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Answer:
Cirrus
Explanation:
Cirrus clouds are found in the atmosphere