Answer:
A disease caused by a plasmodium parasite, transmitted by the bite of infected mosquitoes.
The severity of malaria varies based on the species of plasmodium.
Symptoms are chills, fever, and sweating, usually occurring a few weeks after being bitten.
People traveling to areas where malaria is common typically take protective drugs before, during, and after their trip. Treatment includes antimalarial drugs.
Explanation:
46.0 mL sample of gas at 28.0°C and 748 torr. What volume would this gas
sample occupy at stp?
Answer:
2
Explanation:
what is meant by chemical combination? what are the laws of chemical combination?
Answer:
In simple terms, this law states that matter can neither be created nor destroyed. In other words, the total mass, that is, the sum of the mass of reacting mixture and the products formed remains constant.
Explanation:
please give me brain list and follow
an unknown sample with a mass of 50.0 grams changes from an initial temperature of 22.5°C to a final temperature of 32.4°C. It is known that the sample absorbed 444 J and f heat l. Bases on this information, what substance in the table is most likely the identity of this sample?
Answer:
Aluminum
Explanation:
aluminium extraction from its ore
If Jonathan went skateboarding from 4:00 PM to 4:30 PM and traveled 450 meters, what was his average speed?
Based on the procedure, which of the following are reasonable sources of errors in determining heat lost or gained? One or more answers are correct and you will receive negative points for incorrect answers. Group of answer choices The cap of the calorimeter was not closed immediately after mixing. The final temperature was measured before the temperature stopped changing. Temperatures were not measured right before mixing. Volumes of solutions were not measured accurately.
Answer:
The possible source of errors as regard the Procedure are:
The final temperature was measured before the temperature stopped changing The cap of the calorimeter was not closed immediately after mixing temperatures where not measured right before mixingExplanation:
The procedure referred to should a experiment with regards heat
The possible source of errors as regards the Procedure are:
The final temperature was measured before the temperature stopped changing The cap of the calorimeter was not closed immediately after mixing temperatures where not measured right before mixingWhat molecules can cells break down for energy?
The options
A. Very small gas molecules, like carbon dioxide.
B. Large molecules made from glucose, like starch.
C. Small sugars, like glucose.
D. Very small liquid molecules, like water.
Answer: I think the answer is C)
Explanation:
7) What is the speed of a jet plane
that flies 7200 km in 9.5 hours?
Answer:
68,400
Explanation:
In the following reaction:
C6H6 + Br2 → C6H5Br + HBr
Assume 1.25 moles of C6H6 react with sufficient bromine, how many moles of C6H5Br should form?
2.50 mol
5.00 mol
0.625 mol
1.25 mol
Answer:
1.25mol
Explanation:
The equation you gave is balanced and everything is in a 1:1:1:1 ratio. Because there is excess bromine, the reaction can proceed until completion which will give you 1.25 mol C6H5Br
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A rigid container of O 2 has a pressure of 340 kPa at a temperature of 713 K. What is the pressure at 273°C ?
Answer:
260 kPa
Explanation:
To answer this problem we can use Gay-Lussac's law, which states that at a constant volume (such as is the case with a rigid container):
P₁T₂=P₂T₁Where in this case:
P₁ = 340 kPaT₂ = 273 °C ⇒ 273 + 273.16 = 546 KP₂ = ?T₁ = 713 KWe input the data:
340 kPa * 546 K = P₂ * 713 KAnd solve for P₂:
P₂ = 260 kPaFill in the missing information:
1. Complete Nuclear Symbol ________
2. Atomic # ________
3. Mass number ________
# Protons 22
# Electrons 18
# Neutrons 26
4. Charge _________
Answer: 1. Complete Nuclear Symbol : [tex]_{22}^{48}{Ti^{4+}}[/tex]
2. Atomic number : 22
3. Mass number : 48
4. Charge : 4 +
Explanation:
Atomic number is equal to the number of protons.
Mass number is the sum of number of neelectrons. utrons and number of protons.
Given : no of protons = 22 , thus atomic number = 22
Mass number = number of neutrons + number of protons
Mass number = 26 + 22 = 48
Also for a neutral atom , the number of protons is equal to the number of electrons. But here electrons are 4 less than protons, which means the atom has lost 4 electrons and thus will have a charge of 4+.
The atomic number is specific to an element, and the element with atomic number 22 is Titanium (Ti). The representation is [tex]_{22}^{48}{Ti^{4+}}[/tex]
what is the molar mass of aspartic acid
The molar mass of aspartic acid is 133.05g/mol.
What is molar mass?The molar mass is the mass per unit amount of substance of a given chemical entity. It is denoted by a symbol M. The SI unit of molar mass is kg/mol.
What is aspartic acid?Aspartic acid is one of the building-block of amino acids which is responsible for synthesizing proteins and regulating hormones in the human body.
The chemical formula of aspartic acid is C4H7NO4.
Atomic mass of C = 12.011u, H = 1.007u, N = 14.006u, O = 16u
Molar mass of C4H7NO4 = 4(12.011)+7(1)+14.006+4(16)
= 48.044+7+14.006+64
= 133.05g/mol
Hence, the molar mass of aspartic acid is 133.05g/mol.
To learn more about molar mass here
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Look at the diagram below.
Ray 1 from the Sun moves through air and falls on the surface of a lake. Ray 2 is a ray which travels from the surface of the lake at the point Ray 1 strikes the lake, and moves towards air. Ray 1 and Ray 2 make the same angle with the surface of the lake. Ray 1 bends towards the vertical when it enters the lake as Ray 3
Which statement is true?
Ray 2 is the refracted ray.
Ray 3 is the reflected ray.
Ray 1 and Ray 2 make the same angle with the vertical line.
Ray 1 and Ray 3 make the same angle with the vertical line.
Answer:
3rd statment
Explanation:
ray 1 and 2 are same vertical line
Answer: C: Ray 1 and Ray 2 make the same angle with the vertical line.
Explanation:
If H2O is removed from this reaction, what will happen? 2H2 + O2 + 2H20 O A. The product-favored reaction will stop. B. The reactants will react to produce more H2O. C. The equilibrium will not change. D. The reaction will be reactant-favored.
Answer:
B. The reactants will react to produce more H₂O
Explanation:
Given the reaction
2H₂+O₂→2H₂O
A decrease in the amount of H₂O will cause the reaction to produce more H₂O. When you change something, the reaction seeks to undo that change.
Choose ALL that apply for spring tides Occur twice a month Moon, Sun, and Earth are perpendicular Highest of the high tides and lowest of the low tides. Moon, Sun, and Earth are aligned
Answer:
Twice a month, sun and earth are perpendicular
Explanation:
Answer:
2 times in a month it happens
Explanation:
hope this helps (:
When aqueous ammonia is added to a solution containing Bi3+ and Cu2+ cations, ____________ occurs. A. Reduction to black bismuth metal.B. Precipitation of a black bismuth hydroxide.C. Precipitation of white bismuth hydroxide. D. Formation of a red-brown precipitate of Cu2[Fe(CN)6].
Answer:
C. Precipitation of white bismuth hydroxide.
Explanation:
When aqueous ammonia is added to a solution that has Bi3+ and CU2+ cations, what we would have as a chemical result is the precipitation of white Bismuth hydroxide.
The chemical reaction for this can be written as,
Bi3+ + 2NH3 + 3H2O ⇌ Bi(OH)3(s) + 3NH4
Thank you!
How many moles of titanium are in a sample containing 2.8 x 10^24 atoms?
1) 1.69 x 10^48
2) 4.65 x 10^43
3) 4.65
4) 0.0465
5) 48
Answer:
4.65 moles
Explanation:
To calculate this, we can use Avogradro's Number: 6.022*10^23
[tex]2.8*10^2^4*\frac{1mole}{6.022*10^2^3} =4.65mol[/tex]
So, there are 4.65 moles in 2.8*10^24 atoms of Ti
Give the IUPAC name for the following alkanes and cycloalkanes
Answer:
1.3-bromo,2-chloro,4-floro hexane
3.bromocyclo pentane
The table shows the rate of reaction for two unknown time intervals during a chemical change.
Reaction Rates
Time Intervals (s) Rate (M/s)
T1 1.8 x 10−6
T2 1.0 x 10−6
Which of the following is true for the two time intervals? (5 points)
Select one:
a. T1 is longer than T2, and the concentration of reactants at the end of T1 is lower than that of T2.
b. T1 is longer than T2, and the concentration of products at the end of T1 is lower than that of T2.
c. T1 is shorter than T2, and the concentration of reactants at the end of T1 is higher than that of T2.
d. T1 is shorter than T2, and the concentration of products at the end T1 is higher than that of T2.
Answer:
i think a is the right answer
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What cell structure is necessary for photosynthesis?
xylem
chloroplasts
cell walls
roots
Write the name for the acid H2 SO4 when it is dissolved in water.
Answer: Sulfuric acid
Explanation: hope this help! :)
how many hydrogen molecules are there in 1 ton of hydrogen?
Considering the definition of mass molar and Avogadro's Number, there are 3.0115×10²⁹ molecules in 1 ton of hydrogen.
First, the molar mass of hydrogen H₂, that is, the amount of mass that a substance contains in one mole, is 2 g/mole.
In this case, being 1 ton = 1,000,000 grams, the number of moles that 1 ton of hydrogen contains is calculated as:
[tex]1,000,000 gramsx\frac{1 mole}{2 grams} = 500,000 moles[/tex]
On the other hand, Avogadro's Number is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole.
Then, the number of molecules that 500,000 moles of hydrogen contains is calculated as:
[tex]500,000 molesx\frac{6.023x10^{23} molecules }{1 mole}[/tex]= 3.0115×10²⁹ molecules
Finally, there are 3.0115×10²⁹ molecules in 1 ton of hydrogen.
Learn more about:
mass molar: https://brainly.com/question/12695086?referrer=searchResultsAvogadro's Number: brainly.com/question/11907018?referrer=searchResults brainly.com/question/1445383?referrer=searchResults brainly.com/question/1528951?referrer=searchResultsWhat did Dalton compare atoms to?
A. Wood
B. Jacks
C. Marbles
D. Leaves
Explanation:
the answer is C marbles hope you find it helpful
20 points pls be fr will mark brainliest
Answer:
1. The second option
Explanation:
How many moles are there in 8.0 grams of CaCO3
Answer: moles = 0.0799305403604264
Explanation:
2 moles KCl + 3 moles O2 → 2moles KCIO3
Calculate the number of particles of each substance based on the number of moles from the balanced equation
Answer:
KCl ⇒ 1.205x10²⁴ molecules
O₂ ⇒ 1.807x10²⁴ molecules
KClO₃ ⇒ 1.205x10²⁴ molecules
Explanation:
In order to calculate the number of particles from the number of moles, we have to use Avogadro's number, which states the number of particles in one mol:
In 1 mol there are 6.023x10²³ particles (ions, molecules or atoms).So now we multiply the number of moles of each substance by Avogadro's number:
KCl ⇒ 2 mol * 6.023x10²³ molecules/mol = 1.205x10²⁴ moleculesO₂ ⇒ 3 mol * 6.023x10²³ molecules/mol = 1.807x10²⁴ moleculesKClO₃ ⇒ 2 mol * 6.023x10²³ molecules/mol = 1.205x10²⁴ moleculesI need this like NOW
An area on the map where we might see strong winds is:
Question 5 options:
near Maine
near California
near Washington D.C.
near Kansas City
The atomic radius _________________ down a group. Explain why
2. Write the symbol proposed by Dalton for silver, sulphur. oxygen and gold.
Answer:
check the pdf hope it helps :)
Explanation: