Answer:
Phosphorus.
Explanation:
Phosphorus is the important fertilizer which comes through the dust storms of Sahara desert and provides this nutrient to the soils of the Amazon basin. Phosphorus is an important macronutrient that is necessary for the growth and development of plants so we can conclude that this dust storms are very important for the fertility of the soils present in Amazon basin.
What type of element makes a positive
cation?
Answer:
The answer would be Metals.
2×21=how many are there
Why do atoms become larger as you move down a group?
O The numbers of energy levels increase.
O Electron shielding increases.
O The decrease in ionization energy.
O The mass of the atom increases.
Explanation:
option C is the correct answer of this question
Please help me answer Question 1.
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.
. The compound containing both ionic and covalent bond is
A)AIBr3;
B) Cao
C) MgCl2
D) NH4cl
Explanation:
The compound with both ionic and covalent bonds is Ammonium chloride (NH4Cl).
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
Explanation:
The reactants are Aluminium and Copper chloride.
The products are Copper and Aluminium chloride.
What type of change occurs as salt dissolves in water?
a)phase change
b)element change
c)physical change
d)chemical change
Answer :-
C) Physical change
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?
Answer:
A
Explanation:
it is A because all of the other ones are opinions.
Answer:
A
Explanation:
How many moles are in 7.18x10^24 ions of mg
Answer:
11.93 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{7.18 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 11.92691...[/tex]
We have the final answer as
11.93 molesHope this helps you
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.
Answer:
a
Explanation:
A saturated aqueous solution of sucrose contains 200 grams of sucrose and 100 grams of water. Which is the solvent: sucrose or water?
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
How many atoms of S are there in the reactants?
Sg + F2 ---> SFO
Answer:
One atom
Explanation:
Write three points that how chemical fertilizer impact the environment
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.what does the slope of a distance vs time graph tell you? yes
Answer:
an increase of acceleration or decrease of acceleration
Explanation:
what is the wavelength of a 250Hz wave traveling station speed of 350 m/s
Explanation:
ok....m.m....... nm...m
What is the sodium sulfide positive ion and negative ion?
Answer:
Poyo
Explanation:
What kind of bonding would exist between
sulfur and hydrogen?
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.
M. element
cenabrecht
0.5 mele of an
Answer:
Number of moles (n)=
molecular weight
weight
Weight=n×Molecular weight
=0.5×14
Mass=7g
Drag the tiles to the correct boxes to complete the pairs.
Match the genetic mutations with their names.
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.
All of the following are alkaline earth metals except.
A) Barium
B) Calcium
C) Sodium
D) Magnesium
explain faraday's law
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.
what is the difference between saturated and unsaturated hydrocarbons
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.
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?
please help me i willgive brain list
Answer:
the molecular formulas of:Butane is C4H10butene is C4H8Butyne is C4H6.Hexane is C6H14Hexene is C6H12Hexyne is C6H10hope it helps........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-
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
Can I have an answer for this?
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'10 points
10. What is the correct order of your blood vessels from largest to
smallest?
a. veins arteries, capillaries
b. capillaries, veins, areteries
c. arteries, veins, capillaries
d. none of the above
what kinds of bonds are found in a sample of H2O(s)?
Answer:
a covalent bond? is that what you mean?
Explanation:
How do waves travel through space?
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.
0.500 L of a gas is collected at 2911 MM and 0°C. What will the volume be at STP?
Answer:
V₂ = 1.92 L
Explanation:
Given data:
Initial volume = 0.500 L
Initial pressure =2911 mmHg (2911/760 = 3.83 atm)
Initial temperature = 0 °C (0 +273 = 273 K)
Final temperature = 273 K
Final volume = ?
Final pressure = 1 atm
Solution:
Formula:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
by putting values,
V₂ = P₁V₁ T₂/ T₁ P₂
V₂ = 3.83 atm × 0.500 L × 273 K / 273 K × 1 atm
V₂ = 522.795 atm .L. K / 273 K.atm
V₂ = 1.92 L