Answer:
The maritime tropical air mass keeps temperatures in Florida in the 80s and 90s in summer and in the 70s and 80s in winter. It can be pushed south by large continental polar and maritime polar air masses from the north and is affected by the reduced sunlight in winter.
Explanation:
There are different types of air masses based on the region from there they originates. Florida usually experience maritime and tropical air masses.
What is air masses?A huge body of air with a somewhat constant temperature and humidity is referred to as an air mass. Air mass source regions are the places where air masses originate.
For a sufficient amount of time, air will absorb the characteristics of the surface beneath it. The best source regions are those that are uniformly flat and composed. Siberia, central Canada, seas, and vast deserts are a few examples.
Tropical air masses are identified by a capital "T" for tropical. They originate in warm, tropical climates. A capital "A" for arctic is used to identify air masses that originate there. Dry air masses from the continental origin are those that originate over land.
Florida's northern and central regions experience a humid subtropical climate. The climate in South Florida is tropical. Hence tropical air masses are found in Florida.
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determine the specific heat ofmaterial if a 12g sample absorbed 48j as it was heated from 20-40
Answer:
c =0.2 J/g.°C
Explanation:
Given data:
Specific heat of material = ?
Mass of sample = 12 g
Heat absorbed = 48 J
Initial temperature = 20°C
Final temperature = 40°C
Solution:
Specific heat capacity:
It is the amount of heat required to raise the temperature of one gram of substance by one degree.
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
ΔT = 40°C -20°C
ΔT = 20°C
48 J = 12 g×c×20°C
48 J =240 g.°C×c
c = 48 J/240 g.°C
c =0.2 J/g.°C
in a closed system as the temperature of a liquid increases the vapor pressure of the liquid
State the type of stability of Cl- ion.
Organic materials are from ___________things.
A. Living
B. Dead
EASY POINTS
B trust me please ..........
Answer:
both
Explanation:
depends on what type because there is fecal material dead tissue decomposing soooo both
Why series fatty acid carbons seen in double from?
What else is produced during the replacement reaction of silver nitrate and potassium sulfate? 2AgNO3 + K2SO4 Ag2SO4 + ________
Answer:
c
Explanation:
Answer:
c
Explanation:
An average human body has 84.0 g of chlorine (as chloride ions) in it. If the average mass of a human body is 70.0 kg, what is the concentration of chlorine in ppth?
Answer:
[tex]ppth=1.2ppth[/tex]
Explanation:
Hello!
In this case, since the parts per thousand of a solute in a solute is defined in terms of its grams per kilogram of solution (unlike parts per million which are mg/kg) we can mathematically represent it via:
[tex]ppth=\frac{grams_{solute}}{kg{solution}}[/tex]
Now, since the whole human body acts as the solution and the chlorine in the form of ions as the solute, the required ppth turns out:
[tex]ppth=\frac{84.0g}{70.0kg}\\\\ppth=1.2ppth[/tex]
Best regards!
What best describes the reactants and products in a reaction at equilibrium?
more reactants form than products
they form at equal rates
more products form than reactants
they form equal amounts
Answer: they form at equal rates
Explanation:
By definition, at equilibrium, the rate of the forward reaction is equal to the rate of the reverse reaction.
How many moles of NH₃ can be produced from 4.81 moles of nitrogen in the following reaction:
N₂ (g) + 3 H₂ (g) → 2 NH₃ (g)
Answer:
9.62moles of NH₃
Explanation:
Given parameters:
Number of moles of nitrogen = 4.81moles
Unknown:
Number of moles of NH₃ = ?
Solution:
To solve this problem, we need to establish a balanced reaction equation:
N₂ + 3H₂ → 2NH₃
Now, we can solve the problem by working from the known to the unknown.
1 mole of N₂ produced 2 moles of NH₃
4.81moles of N₂ will produce 2 x 4.81 = 9.62moles of NH₃
Which three types of reactions yield a product that is a chemically bonded combination of reactants? replacement, polymerization, decomposition polymerization, decomposition, oxidation decomposition, synthesis, replacement oxidation, synthesis, polymerization
Answer:
oxidation, synthesis, polymerization
Explanation: I took the test
The three types of reactions are product that is a chemically bonded combination of reactants are oxidation, synthesis, polymerization
A chemical reaction is often described as when two or three elements are combined together to form a compound. The product of oxidation, synthesis, polymerization are simply said to chemically bonded because they are composed of different reactants (elements) that are combined together to form another.Conclusively, we can therefore say that the three types of reactions are product that is a chemically bonded combination of reactants are oxidation, synthesis, polymerization
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Which of the following is always altered when a substance undergoes a
chemical change?
a- state of matter of the substance
b- color of the substance
c- mass of the substance
d- arrangement of the atoms composing the substance
color of the substance
How many sp2 and sp3 are in caffeine?
Answer:
5.56×10²² molecules of AlPO4
Explanation:
i think thats is the correct answer if its wrong im really sorry
The initial concentration of reactants in a first order reaction is 0.27 M. The rate constant for the reactio is 0.75 s^-1. What is the concentration of reactants after 1.5sec?
Answer:
Final concentration = 0.019 M
Explanation:
Initial Concentration [A]o = 0.27M
Rate constant, k = 0.75 s^-1
Final concentration [A] = ?
Time, t = 1.5s
The relationship between the variables is given by the equation;
ln[A] = ln[A]o - kt
ln[A] = ln(0.27) - (0.75)(1.5)
ln[A] = - 1.309 - 1.125
ln[A] = - 2.434
[A] = 0.019 M
PLEASE HELP FAST!!
If metal X is lower than metal Y on the activity series, then:
A. X will react in water, but only if the temperature is low enough
B. Y will form oxides of X, but only indirectly
C. X will replace ions of Y in a solution
D. Y will replace ions of X in a solution
Answer:
D. Y will replace ions of X in a solution
Explanation:
If metal X is lower than metal Y on the activity series, then Y will replace ions of X in a solution.
This is the crux of single displacement reactions.
In a single displacement reaction, a metallic ion in solution is replaced by a metal higher in the activity series than the metal in solution. On the activity series, metals higher are more reactive and will displace the lower and less reactive ones. Reactivity increases up the group.which type of experiment follows ethical standars?
A.Releasing contaminated waste into water system?
b. perfoming test on animals when the information can be obtained in other ways?
c. doing research on animals in which the animal experiences to fear or pain.
d. perfoming tests on people who cannot protect themselfs?
Answer:
A.Realesing contaminated waste into the water system
Explanation:
because if you you try it would really work
What is the coefficient for titanium tetrachloride when the equation below is balanced?
TiCl4 + H2O TiO2 + HCl
a. 4
b. 1
c. 2
d. 3
Answer:
I believe that it is B. 1
Explanation: I could be wrong but I believe its 1
Water contains 2 polar bonds and the molecule is polar
True
False
Which groups on the periodic table represent the s- block ?
Answer:
Groups 1 and 2.
Explanation:
The elements of Group 1 and Group 2 of the modern periodic table are called S block elements. The two types of s block elements are possible i.e. the elements with one electron (s1) or the elements with two electrons (s2) in their s-subshell.
Acetylene gas is often used in welding torches because of the very high heat produced when it reacts with oxygen gas, producing carbon dioxide gas and water vapor. Calculate the moles of oxygen needed to produce 0.095 of carbon dioxide. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.
Answer:
0.12 mol O₂
Explanation:
Step 1: Write the balanced combustion reaction
C₂H₂ + 2.5 O₂ ⇒ 2 CO₂ + H₂O
Step 2: Establish the appropriate molar ratio
We want to know the moles of oxygen needed to produce 0.095 moles of carbon dioxide. The molar ratio of O₂ to CO₂ is 2.5:2.
Step 3: Calculate the moles of oxygen needed to produce 0.095 moles of carbon dioxide
0.095 mol CO₂ × 2.5 mol O₂/2 mol CO₂ = 0.12 mol O₂
GIVING BRAINLIEST!
What kinds of observations can you make that might indicate a chemical change is taking place?
Color Change.
Production of an odor.
Change of Temperature.
Evolution of a gas (formation of bubbles)
Precipitate (formation of a solid)
Hope this helps!:)
Which root word of the binary ionic compound ends with -ide?
The metal
The positive ion
The non-metal
The group 1 element
Answer: the non metal
Explanation:
at what temp does h2o melt
Answer:
32 degrees fahrenheit
Explanation:
Hi, I could really use your help. The question is Which of the products would you anticipate being formed in the least molar quantity? That is, which of the products (1, 2, or 3) is the minor product? Explain your choice. HINT: Consider the intermediates formed.
Answer:
Number 1 will be in the lowest molar quantity b/c formation of 1st order products are more difficult to form than secondary (#2) or tertiary (#3) substitution products.
Explanation:
In general, if a substitution occurs such that it is attached to a carbon that's attached to only one carbon, it is referred to as a primary carbon substitution. If a substitution occurs on a carbon that is attached to two (2) carbons, it is a secondary carbon substitution. Finally, if a substitution occurs such that it is attached to a carbon that's attached to three (3) carbons it is a tertiary substitution. Typically, primary substitution products follow an Sn2 type reaction pathway. Such requires the formation of only one intermediate that difficult to form as compared to 2° or 3° intermediates. Once formed, however, they will be very unstable and proceeds to product very quickly. Such produce very low product yield. The intermediates for 2° and 3° form more easily and are more stable in the reaction environments. An example is tertiary butyl halogens (e.g., t-butyl chloride) follow and Sn1 type reaction pathway forming a tertiary carbocation which then reacts with a nucleophile of choice and forms much higher yields than the 1° carbon substitution reactions. Suggest reviewing Sn2 and Sn1 substitution reactions.
The most useful property of metalloids is their
(A) Varying ability to conduct electric current.
(B) Softness and malleability.
(C) Tendency to be unreactive.
(D) Ability to be pulled out into long wires.
Answer:
An element is the simplest form of matter that cannot be split into simpler substances or built from simpler substances by any ordinary chemical or physical method. There are 110 elements known to us, out of which 92 are naturally occurring, while the rest have been prepared artificially. Elements are further classified into metals, non-metals, and metalloids.
Table 2.11.1: Characteristic properties of metallic and non-metallic elements:
Distinguishing luster (shine)
Non-lustrous, various colors
Nonmetals
Elements that tend to gain electrons to form anions during chemical reactions are called non-metals. These are electronegative elements. They are non-lustrous, brittle and poor conductors of heat and electricity (except graphite). Non-metals can be gaseous, liquids or solids.
Physical Properties of nonmetals:
Physical State: Most of the non-metals exist in two of the three states of matter at room temperature: gases (oxygen) and solids (carbon).
Non-Malleable and Ductile: Non-metals are very brittle, and cannot be rolled into wires or pounded into sheets.
Conduction: They are poor conductors of heat and electricity.
Luster: These have no metallic luster and do not reflect light
Conductivity: Poor conductors of heat and electricity
Melting and Boiling Points: The melting points of non-metals are generally lower than metals
Seven non-metals exist under standard conditions as diatomic molecules:
H2(g)
N2(g)
O2(g)
F2(g)
Cl2(g)
Br2(l)
I2(l) (volatile liquid - evaporates readily)
Chemical Properties of Nonmetals
Non-metals have a tendency to gain or share electrons with other atoms. They are electronegative in character.
Nonmetals, when reacting with metals, tend to gain electrons (typically attaining noble gas electron configuration) and become anions:
Nonmetal + Metal -> Salt
3Br2(l)+2Al(s)→2AlBr3(s)(2.11.4)
Compounds composed entirely of nonmetals are molecular substances (not ionic).
They generally form acidic or neutral oxides with oxygen that that dissolve in water react to form acids:
Physical Properties of Metalloids
State: They are all solid at room temperature.
Conduction: Some metalloids, such as silicon and germanium, can act as electrical conductors under the right conditions, thus they are called semi-conductors.
Luster: Silicon for example appears lustrous, but is not malleable or ductile (it is brittle - a characteristic of some nonmetals). It is a much poorer conductor of heat and electricity than the metals.
Solid Solutions: They can form alloys with other metals.
Chemical Properties of Metalloids
Their physical properties tend to be metallic, but their chemical properties tend to be non-metallic.
The oxidation number of an element in this group can range from +3 to -2, depending on the group in which it is located.
Trends in Metallic and Nonmetallic Character
Metallic character is strongest for the elements in the leftmost part of the periodic table, and tends to decrease as we move to the right in any period (nonmetallic character increases with increasing ionization values). Within any group of elements (columns), the metallic character increases from top to bottom (the ionization values generally decrease as we move down a group). This general trend is not necessarily observed with the transition metals.
2.10: Electron Affinities 2.12: Electronegativity
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2.4: Development of the Periodic Table
2.5: Effective Nuclear Charge
The calculation of orbital energies in atoms or ions with more than one electron (multielectron atoms or ions) is complicated by repulsive interaction...
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Explanation:
its D
Answer:
(A) Varying ability to conduct electric current.
Explanation:
The most useful property of metalloids is their varying ability to conduct electric current.
Metalloids are elements or substances that shares properties that transcends between those of a true metal and non-metal.
Based on their properties that straddles those of metals and non-metals, they find good use in electronic parts. Most importantly because they have varying ability to conduct electric current. They conduct current under certain conditions.which evidence is an indication that a chemical reaction has occured
Answer:
color change
Explanation:
What does the electronegativity of an atom indicate?
A.
The tendency of the atom to pull on electrons
B.
The measurement of the charge of an ion
C.
The effect the valence electrons have on core electrons
D.
The energy required to gain or lose an electron
Answer:
A. The tendency of the atom to pull on electrons
Explanation:
Took the quiz for A⃣ p⃣ e⃣ x⃣ , its A
got the answer, so in other words, I'm good.
Answer:
Brainliest?
Explanation:
pls!!!!!
Which term is the rate at which work is done
Answer:
1
Explanation:
In Rutherford's Gold Foil Experiment, he discovered ? O neutrons O Protons O nucleus O electrons 4 5
Answer:
Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom.
7: How many times can a cell divide?
Explanation:
60 times and it matters why they need to in order to divide