Morgan wants to compare the weather conditions at her school each day during the week. She decides to measure and record weather data each day at noon. Which of the following measurements would be least useful to report?


humidity

elevation

wind speed

air temperature

Answers

Answer 1

Answer: Air Temperature


Related Questions

ASAP PLEASE AND THANK YOU
What is the molar mass of a pure gas that has the density of 1.40 g/L at STP?

Answers

Answer:

bro what Is this like I dont even kno

Answer:

O2 is the answer I believe

Can someone help me please!!

Answers

Answer:

1. AgNO₃ (aq) + NaCl (aq) ----> NaNO₃ (aq) + AgCl (s)

2. Li₂SO₄ (aq) + BaCl₂ (aq) ----> 2 LiCl (aq) + BaSO₄ (s)

3. 2 NaOH (aq) + MgCl₂ (aq) ----> 2 NaCl (aq) + Mg(OH)₂ (s)

Explanation:

The reaction involving the mixing of two soluble solutions to produce a precipitate is known as a precipitation reaction.

A precipitation reaction is double-replacement reaction (a reaction that exchanges the cations or the anions of two ionic compounds) in which one product is a solid precipitate.

Precipitation reactions at useful in the identification of various ions present in a solution. In order to predict the reactions that will produce a precipitate, solubility rules as given in the solubility table below can be used.

From the tables, the reactions that will produce a precipitate, as well as their balanced molecular equations are as follows:

1. AgNO₃ (aq) + NaCl (aq) ----> NaNO₃ (aq) + AgCl (s)

2. Li₂SO₄ (aq) + BaCl₂ (aq) ----> 2 LiCl (aq) + BaSO₄ (s)

3. 2 NaOH (aq) + MgCl₂ (aq) ----> 2 NaCl (aq) + Mg(OH)₂ (s)

What was the purpose of letting the transformed cells sit in LB for a few minutes before spreading them onto the plates?

A. This allows time for the cells to express the antibiotic resistance gene

B. This allows the cells to take up the plasmid after the heat shock procedure

C. This allows time for the cells to warm up before plating

D. This allows cells time to start glowing green

Answers

Answer: D

Explanation:

Many tall trees grow in a forest. Only a few small plants grow underneath the trees. Why is this so?

Answers

Answer:

Because as more and more trees are tall, they end up blocking the sun to the smaller vegetation and so many plants end up dying or they evolve to grow taller and taller as a way to stay alive.

Explanation:

Zn(s), Zn(NO3)2 (0.3 M) || Cu(s), CuCl2 (0.5 M)

(Need help solving these questions, so I can solve the rest of the questions like this in my lab. It is greatly appreciated. Thank you)

2. Write the half reactions that occur at the anode and cathode in this electrochemical cell. Annotate which half reaction occurs at the anode and the cathode.
3. Write the overall balance reaction of this electrochemical cell.
4. Calculate E°cell of this electrochemical cell. (include units)
5. Calculate the reaction quotient (Q) of this reaction.
6. Calculate the expected Ecell for this reaction

Answers

Answer:

See Explanation

Explanation:

At the anode;

Zn(s) -----> Zn^2+(aq) + 2e

At the cathode;

Cu^2+(aq) + 2e ------> Cu(s)

Overall electrochemical reaction;

Zn(s)  + Cu^2+(aq) ------>  Zn^2+(aq) + Cu(s)

E°cell = E°cathode - E°anode

E°cell = 0.34 - (-0.76)

E°cell = 1.1 V

Q = [0.3 M]/[0.5 M]

Q = 0.6

From Nernst equation;

Ecell =  E°cell - 0.0592/n log Q

Ecell = 1.1 - 0.0592/2 log (0.6)

Ecell = 1.1 - 0.0296 log (0.6)

Ecell = 1.11 V

2 CO + O2 → 2 CO2, how many grams of oxygen is required to produce 1.0 mole of CO2?

Answers

Answer:

16 g

Explanation:

Step 1: Write the balanced equation

2 CO + O₂ → 2 CO₂

Step 2: Calculate the moles of O₂ required to produce 1.0 moles of CO₂

The molar ratio of O₂ to CO₂ is 1:2.

1.0 mol CO₂ × 1 mol O₂/2 mol CO₂ = 0.50 mol O₂

Step 3: Calculate the mass corresponding to 0.50 moles of O₂

The molar mass of O₂ is 32.00 g/mol.

0.50 mol × 32.00 g/mol = 16 g

What type of reaction is illustrated below?2H1 --> H2 + 12

Answers

Answer:

Decomposition reaction.

Explanation:

2HI —> H₂ + I₂

From the above equation, we can see clearly that HI undergoes a reaction to produce H₂ and I₂ which are the elements that make up HI.

Therefore, the equation illustrated above is a decomposition reaction because HI breaks into H₂ and I₂

NOTE: Decomposition reaction is a reaction in which a compound splits or breakdown into two or more simple elements or compound.

Hi can someone please help me with this. I would really appreciate it. It’s kind of urgent. Thank u so much!

Answers

Answer:

a) The system is in equilibrium

b) No other force is acting on the system

Explanation:

a) The forces in a system is balanced until and unless there is equal and opposite force acting on the system. In this image the upward force is equal to the downward force on the book and the table and hence it is in equilibrium

b) An object which is in static mode, produces downward force because of weight and in response to that a normal reaction is produced in upward direction. Apart from these two forces, no other force is acting on this book and table system.

What are the 4 different materials that come together to make up a bone?

Answers

Answer:

calcium, mineral hydroxyapatite, protein collagen and the tough fibrous component of tendons and ligaments

Explanation:

hope this helps :)

what do you understand by atomic theory​

Answers

Answer:

Explanation:

All material substances are composed of minute particles or atoms of a comparatively small number of kinds and all the atoms of the same kind are uniform in size, weight, and other properties.

Hope this helped!!

Answer:

Atomic theory states that matter is composed of particles called atoms.

Explanation:

According to the theory, all types of matter can be divided into smaller parts, to the point it's indivisible.

An atom can be defined as the basic particle that composes a chemical element.

John Dalton's Atomic Theory:

All matter is made of atoms, which are indivisible.All atoms of a given element are identical in mass and properties.Compounds are combinations of two or more different types of atoms. A chemical reaction is a rearrangement of atoms.

Dalton's theory was further modified by the discovery of sub-atomic particles, like the electrons, neutrons and protons.

13. According to Arrhenius definition which of the following is an acid *
1 point
NaCl
КСІ
Ο Ο Ο
HCI
Al(OH)3

Answers

Answer: hcl

Explanation:

what are super fuels? Describe both types with examples. In your view, what makes super fuels? ​

Answers

[tex]\bcancel{\huge\pink{\fbox{\tt{࿐αɴѕωєя࿐}}}}[/tex]

Super fuel or high performance fuel is petrol with a higher octane rating. Most standard brands of fuel have a 95 octane rating. But super fuel typically has a higher rating - around 98 - which can make the engine work more efficiently and improve performance.

i need help can someone help me

Answers

Answer:

Option D. The number of oxygen atom is the same before and after the reaction.

Explanation:

From the question given above, the following were obtained:

Robin's equation:

H₂ + O₂ —> H₂O

Alex's equation

2H₂ + O₂ —> 2H₂O

To know which equation better represents the reaction, we shall determine which of the equation is balanced.

For Robin:

H₂ + O₂ —> H₂O

Element >>> Reactant >>> Product

H >>>>>>>>> 2 >>>>>>>>>> 2

O >>>>>>>>> 2 >>>>>>>>>> 1

Robin's equation is not balanced because the number of atoms of each element in the reactant and product are not equal.

For Alex:

2H₂ + O₂ —> 2H₂O

Element >>> Reactant >>> Product

H >>>>>>>>> 4 >>>>>>>>>> 4

O >>>>>>>>> 2 >>>>>>>>>> 2

Alex' equation is balanced because the number of atoms of each element in the reactant and product are equal.

Thus, option D gives the right answer to the question.

7. Indicate if the following are correct or incorrect.
1s2
6s3
5f10
4d3
2d4
3p10

Answers

Answer:

1s2: correct.

6s3: incorrect because the subshell s can hold up to 2 electrons.

5f10: correct.

4d3: correct.

2d4: incorrect because the second energy level just has the s and p subshells.

3p10: incorrect because the p subshell can hold up to 6 electrons.

Explanation:

Hello there!

In this case, according to the attached file, which shows the correct orbitals and electrons, we can proceed as follows:

1s2: correct.

6s3: incorrect because the subshell s can hold up to 2 electrons.

5f10: correct.

4d3: correct.

2d4: incorrect because the second energy level just has the s and p subshells.

3p10: incorrect because the p subshell can hold up to 6 electrons.

Best regards!

In the following reaction, if you wanted to produce more hydrochloric acid (HCl), what should you do? (2 points)
4HCl + O2 ⇄ 2H2O + Cl2

a. add more H2O
b. add more O2
c. remove H2O
d. remove Cl2

Answers

Answer:

Add more H2O

Explanation:

Took the test

If you wanted to produce more hydrochloric acid (HCl), you should add more [tex]H_2O[/tex] to 4HCl + [tex]O_2[/tex] ⇄ 2[tex]H_2O[/tex] + [tex]Cl_2[/tex]. Hence, option A is correct.

What is hydrochloric acid?

Hydrochloric acid [[tex]H^+[/tex]](aq) [tex]Cl^-[/tex](aq) or [tex]H_3O^+ Cl^-[/tex]], also known as muriatic acid, is an aqueous solution of hydrogen chloride.

For instance, adding a strong acid such as HCl to water results in the reaction HCl + [tex]H_2O[/tex] → [tex]H_3O^+[/tex] + [tex]Cl^-[/tex].

In other words, the proton ([tex]H^+[/tex]) from the acid binds to neutral water molecules to form [tex]H_3O^+[/tex] raising the concentration of [tex]H^+[/tex].

Hence, option A is correct.

Learn more about hydrochloric acid here:

https://brainly.com/question/4902679

#SPJ2

A sample of Ne(g) has a volume 250 mL at 752 mm Hg. What is the
new volume if the temperature and amount of gas held constant, the
pressure is;
a) lowered to 385 mm Hg.
b) Increased to 3.68 atm.

Answers

Answer: a) 525 ml

b) 67.2 ml

Explanation:

Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.

[tex]P\propto \frac{1}{V}[/tex]     (At constant temperature and number of moles)

[tex]P_1V_1=P_2V_2[/tex]  

where,

a) [tex]P_1[/tex] = initial pressure of gas  = 752 mm Hg

[tex]P_2[/tex] = final pressure of gas = 385 mm Hg

[tex]V_1[/tex] = initial volume of gas  = 250 ml

[tex]V_2[/tex] = final volume of gas = ?

[tex]752\times 250=385\times V_2[/tex]  

[tex]V_2=525ml[/tex]

Therefore, the volume at 385 mm Hg is 525 ml.

b) [tex]P_1[/tex] = initial pressure of gas  = 752 mm Hg

[tex]P_2[/tex] = final pressure of gas = 3.68 atm = 2796.8 mm Hg    (760mmHg=1atm)

[tex]V_1[/tex] = initial volume of gas  = 250 ml

[tex]V_2[/tex] = final volume of gas = ?

[tex]752\times 250=2796.8\times V_2[/tex]  

[tex]V_2=67.2ml[/tex]

Therefore, the volume at 3.68 atm is 67.2 ml.

If aluminum has a mass of 22.3 g, how many liters of oxygen gas are required at STP?

Answers

Answer:

27.8

Explanation:

Need help with this question please.

Answers

Answer:

12.8

Explanation:

14 = pOH + pH

pH = 14 - pOH

pH = 14 - 1.2

pH = 12.8

Think about a single cell and its parts; for example, think about a cell inside the human body. Now, select an everyday object that could be used as a model for a cell and its parts. In words and/or pictures, describe your model and how it is like the cell.

Answers

Answer:

Mitochondria

Hydraulic Dams

Ribosomes

Small Shops

Nucleus

Town Hall

Endoplasmic Reticulum

Railroad Tracks

Golgi Bodies

Post Office

Cytoplasm

Clean Air and Water

Protein

Widget

Cell Membrane

Fence

Lysosomes

Scrap Yard

Nucleolus

Carpenter's Union

Vacoule

Warehouse

here is some ideas

Fish need about 5 ppm oxygen dissolved in water to survive. Will water with 5 mg oxygen per
liter sustain the fish?

Answers

5mg in liter is 5 ppm

Explanation: 1 ppm is one part per million.

1 ppm is 1 mg is one part of million from 1 kg = 1000 000 mg

1 litre water is 1. Kg.

Express your answer as a balanced half-reaction. Identify all of the phases in your answer.
(acidic) Cr2O7 2−(aq)⟶Cr 3+(aq)
(acidic) CrO4 2−(aq)⟶Cr(OH)4 −(aq)
(acidic) Bi 3+(aq)⟶BiO3 −(aq)
(acidic) CIO −(aq)⟶Cl −(aq)
(^for CIO - that is an i not an L)

Answers

Answer:

1. Cr₂O₇²−(aq) + 14H+ (aq) + 6e- ---->⟶2 Cr³+(aq) + 7H₂O (l)

2. CrO₄²− (aq)⟶+ 4H+ (aq) + 3e- ---> Cr(OH)₄ −(aq)

3. Bi³+ (aq) + 3H₂O (l) ---> BiO₃− (aq) + 6 H+ (aq) + 2 e-

4. CIO −(aq)⟶+ 2H+ (aq) + 2e- ---> Cl −(aq) + H₂O

Explanation:

The given equations are redox reaction equations expressed as as half reactions.

The first step is to identify whether the half-reaction is oxidation reduction.

Then the number of electrons gained or lost are added on the right side of the equation.

Appropriate H+ ions and water molecules are added where necessary since the reaction takes place in acidic environment

The atoms of elements involved in the reaction are balanced by adding the correct coefficients.

1. (acidic) Cr2O7 2−(aq)⟶Cr 3+(aq)

The half-reaction is reduction as the oxidation number of chromium changes from +6 to +3. Two Cr⁶+ ions accepts 3 electrons each to form Cr³+ ions

Cr₂O₇²−(aq) + 6e- ---->⟶2 Cr³+(aq)

Cr₂O₇²−(aq) + 14H+ (aq) + 6e- ---->⟶2 Cr³+(aq) + 7H₂O (l)

2. (acidic) CrO₄²− (aq)⟶---> Cr(OH)₄ −(aq)

The half-reaction is a reduction. One Cr⁶+ accepts 3 electrons to become Cr³+

CrO₄²− (aq)⟶+ 3e- ---> Cr(OH)₄ −(aq)

CrO₄²− (aq)⟶+ 4H+ (aq) + 3e- ---> Cr(OH)₄ −(aq)

3, (acidic) Bi³+ (aq)⟶---> BiO₃− (aq)

The half-reaction is an oxidation. One Bi³+ ion gives up two electrons to become Bi⁵+

Bi³+ (aq)⟶---> BiO₃− (aq) + 2e-

Bi³+ (aq) + 3H₂O (l) ---> BiO₃− (aq) + 6 H+ (aq) + 2 e-

4. (acidic) CIO −(aq)⟶---> Cl −(aq)

The half-reaction is a reduction. One Cl+ ion accepts two electrons to become Cl- ion.

CIO −(aq) + 2e-⟶---> Cl −(aq)

CIO −(aq)⟶+ 2H+ (aq) + 2e- ---> Cl −(aq) + H₂O

Vishwanath had some money. he spent 3 upon 4 part of money to buy goods for his birthday,1 upon 5 part of money give to his sister and the rest of Rs.40 to mother how much did he have at first ​

Answers

Answer:

The correct answer is - 800.

Explanation:

Given:

Total amount = ? or assume x

spend in buying birthday item = 3/4 of x

given to sister = 1/5 of x

remaining to mother = 40

solution:

the remaning amount = x- (3x/4+x/5) = 4=

=> x- 19x/20 = 40

=> x = 20*40

=> x = 800

thus, the correct answer is = 800

2. How many chlorine atoms are in 4 moles of chlorine?

Answers

Answer:

4

Explanation:

I’m thinking it’s 4 too

5. What type of level detector is not affected by the liquid's viscosity, density, conductivity or color and
is very accurate?
a. Radiation
b. lonization
c. Photoelectric
d. Infrared

Answers

infrared i’m pretty sure

Caffeine is a compound found in some natural coffees and teas and in some colas. a. Determine the empirical formula for caffeine, using the following composition of a 100.00-g sample. 49.47 grams of carbon, 28.85 grams of nitrogen, 16.48 grams of oxygen, and 5.20 grams of hydrogen b. If the molar mass of caffeine is 194.19 g/mol, calculate its molecular formula.

Answers

Answer: The molecular formula will be [tex]C_8N_4H_{10}O_2[/tex]

Explanation:

Mass of C= 49.47 g

Mass of N = 28.85 g

Mass of O = 16.48 g

Mass of H = 5.20 g

Step 1 : convert given masses into moles.

Moles of C =[tex]\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{49.47g}{12g/mole}=4.12moles[/tex]

Moles of N =[tex]\frac{\text{ given mass of N}}{\text{ molar mass of N}}= \frac{28.85g}{14g/mole}=2.06moles[/tex]

Moles of O =[tex]\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{16.48g}{16g/mole}=1.03moles[/tex]

Moles of H =[tex]\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{5.20g}{1g/mole}=5.20moles[/tex]

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C = [tex]\frac{4.12}{1.03}=4[/tex]

For N = [tex]\frac{2.06}{1.03}=2[/tex]

For O =[tex]\frac{1.03}{1.03}=1[/tex]

For H = [tex]\frac{5.20}{1.03}=5[/tex]

The ratio of C : N: O: H = 4: 2: 1: 5

Hence the empirical formula is [tex]C_4N_2OH_5[/tex]

The empirical weight of [tex]C_4N_2OH_5[/tex] = 4(12)+2(14)+1(16)+5(1)= 97 g.

The molecular weight = 194.19 g/mole

Now we have to calculate the molecular formula.

[tex]n=\frac{\text{Molecular weight}}{\text{Equivalent weight}}=\frac{194.19}{97}=2[/tex]

The molecular formula will be = [tex]2\times C_4N_2H_5O=C_8N_4H_{10}O_2[/tex]

Which product is often derived from the natural environment?

Answers

Answer:

coal, cotton, chinese tradictional medicine

A que se denomina función química

Answers

En química, el grupo de algunas sustancias compuestas que poseen propiedades químicas semejantes, denominadas propiedades funcionales, recibe el nombre de función química. ... Además están divididas en ácidos, bases, sales y óxidos; y funciones orgánicas que son las relativas a los compuestos orgánicos.

BRAINLIST

For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with pH. If the solubility does change, pick the pH at which you'd expect the highest solubility.

a. Ca(OH)2
b. CuBr
c. Ca3(PO4)2

Answers

Answer:

1. Ca(OH)₂ : Yes

Highest solubility  = pH of 2

2. Cu Br : Yes

Highest solubility  = pH of 4

3. Ca₃(PO₄)₂ : Yes

Highest solubility = pH of 2

Explanation:

From the common ion effect, the solubility of an ionic compound in a solution which already contains one of the ions in that compound will reduce. This is because, when an external stress is placed on a system in equilibrium,  the equilibrium position will shift to remove the effect of that stress. Therefore, when more of the same ions are added to a solution already containing that ion, equilibrium will shift towards removal of the ion, thereby reducing solubility.

1. For Ca(OH)₂:

Ca(OH)₂ is a fairly soluble ionic compound whose dissociation equation is given below:

Ca(OH)₂ (s) ----> Ca²+ (aq) + 2 OH- (aq)

Increase in pH will result in addition of more OH- ions, therefore, its solubility will decrease. On the other hand, a decrease in pH will remove OH- ions, thereby increasing solubility. The pH of highest solubility is 2.

2. For CuBr:

CuBr is a slightly acidic salt as it is salt of a strong acid, HBr and a weak base Cu(OH)₂. Hydrolysis of the salt will result in an acidic medium:

2 CuBr (s) + 2 H₂O (l) ----> 2 HBr (aq) + Cu(OH)₂ (aq).

Thus, an increase in pH will result in an increase in the solubility of CuBr due to the removal of H+ ions. The highest solubility will be at pH of 4.

3) For Ca₃(PO₄)₂

Calcium phosphate is a salt of slightly basic salt as it is a salt of a weak acid, H₃PO₄ and stronger base Ca(OH)₂.

Hydrolysis of the salt will result in a basic medium:

Ca₃(PO₄)₂ (s) + 6 H₂O (l) ---> 3 Ca(OH)₂ (aq) + 2 H₃PO₄ (aq)

Therefore, its solubility increases with decrease in pH due to the removal of OH- ions. The highest solubility will be at pH of 2.

What causes a blue block to appear blue in the sunlight?

Group of answer choices

the blue block reflects all blue light and absorbs all other light

the blue block absorbs blue light and reflects all other light

only blue light is refracted and all other light is absorbed into the block

only blue light transmits through the block and all other light is reflected

Answers

Answer:

sadgsddagd

Explanation:

how are you doing?

Which is a correct comparison between the modern quantum model and John Dalton’s model of the atom?

Answers

Answer:

No comparison => John Dalton did NOT postulate an atomic structure.

Explanation:

Dalton's postulates are based upon generalizations of observable phenomena. Micro structure was not proposed.  The atomic structure that's accepted in the scientific community evolved from conclusions of ...

Thompson's raisen pudding model => electrons suspended in a positive matrix

Rutherford's shell model => dense positive nucleus surrounded by an electron cloud. (No fine structure postulated)

Bohr Concentric Ring Model => electrons orbiting a positive nucleus in discrete  energy levels much like planets orbiting the sun.

Schrodinger - Dirac Quantum Models => electrons occupying specific orbital energy levels as based upon statistical wave mechanics.

   

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