2. Describe how a cold front affects weather.

Answers

Answer 1

Answer:

Cold fronts can produce dramatic changes in the weather.  

Explanation: They move fast, up to twice as fast as a warm front. As a cold front moves into an area, the heavier (more dense) cool air pushes under the lighter (less dense) warm air, causing it to rise up into the troposphere.

Answer 2

Answer:

the person above is correct

Explanation:

just to confirm it

hope th8s helps!

have a good day :)


Related Questions

What is the pH of a 2.0 × 10-4 M HCl solution?

Answers

Answer:

pH = 3.69

Explanation:

HCl is a strong acid. It will disscociates completely into dissoluted ions such that,

[tex][H^+]=2\times 10^{-4}\ M[/tex]

The formula for pH is given by :

[tex]pH=-log[H^+]\\\\pH=-log(2\times 10^{-4})\\\\pH=3.69[/tex]

So, the pH of the solution is 3.69.

The answer to your question is 4.

Which of the following best describes a solution?
a heterogenous compound
a homogenous compound
a homogenous mixture
O O a heterogenous mixture

Answers

Answer:

homogeneous mixture

The answer would be C) Homogeneous mixture

need help to solve it

Answers

Answer:

Divide by the molar mass to get moles

Explanation:

How to make copper chloride from copper carbonate

Answers

Answer:

Describe how a sample of copper chloride crystals could be made from copper carbonate and dilute hydrochloric acid. Add excess copper carbonate to hydrochloric acid in a beaker, stirring until there is no further reaction. Filter the mixture to remove the remaining copper carbonate, then heat the remaining solution to the point of crystallisation.

Explanation: Hope this is right.

is lime flavor ionic or covalent​

Answers

Answer:Calcium carbonate (CaCO3), essentially, is an ionic compound having the bivalent calcium and carbonate ions. But the carbonate anion is a polyatomic species. The carbon atom is bonded to all the three oxygen atoms by covalent bonds - two carbon-oxygen single bonds and one carbon-oxygen double bond.

Explanation:So it's ionic hope this helps u. Btw may i have brainlist plz.

Is the reaction above a replacement reaction? Explain.

Answers

Replacement I don't see anything

Need help ASAP please and thank you

Answers

The answer is the second choice

Name two sources of cholesterol in the human body ​

Answers

Answer:

The cholesterol in your blood comes from two sources: the foods you eat and your liver. Your liver makes all the cholesterol your body needs.

A reaction is expected to produce 28.3 moles of hydrogen gas. If the hydrogen is collected at 297 K and 1.08 atm, what is the volume? 305 L H2 639 L H2 948 L H2 1,240 L H2

Answers

Answer:

The correct answer is 639 L H₂

Explanation:

We use the ideal gas equation:

We have the following data:

n = 28.3 mol

T= 297 K

P= 1.08 atm

R= 0.082 L.atm/K.mol (gas constant)

We introduce the data in the gas equation to calculate the volume (V):

PV=nRT

⇒V =nRT/P = (28.3 mol x 0.082 L.atm/K.mol x 297 K)/(1.08 atm) = 638.2 L ≅ 639 L

Therefore, the correct option is  639 L H₂

Answer:

639 L H2

Explanation:

took the quiz

ur welcome

What is the formula for the compound formed by Al3+ and N3- ?



Answers

Answer:

[tex]\boxed {\boxed {\sf AlN}}[/tex]

Explanation:

The goal when forming compounds is to achieve a net charge of 0.

We are given aluminum with a charge of 3+  and nitrogen with a charge of 3-.

These charges are equal and opposite, so one of each will equal 0.

3+ (Al) + 3- (N) = 0

Therefore, we do not need any subscripts. List the metal's symbol (aluminum) then the nonmetal.

AlN

Th formula for the compound, which is aluminum nitride, is AlN.

The mass of a single gold atom is 3.27X10^-22 grams. How many gold Adams with there be in 57.8 mg of gold.

Answers

Answer:

18 * 10^19 atoms

Explanation:

We must first convert 57.8 mg to grams.

If 1000 mg = 1g

  57.8 mg = 57.8/1000 = 57.8 * 10^-3 g

Now;

If 1 gold atom has a mass of 3.27X10^-22 grams

x gold atoms have a mass of 57.8 * 10^-3 g

x = 57.8 * 10^-3 g/3.27X10^-22 g

x = 18 * 10^19 atoms

blank a long narrow Stepside value that forms the deepest part of the ocean ​

Answers

Answer:

The answer is a trench

A brick measures 0.018 dam by 6.5 cm by 17.3 cm. What is the volume of the brick in cubic centimeters

Answers

Answer:

volume of brick= length × breadth × height

=0.000018 ×6.5×17.3

=

Na2SO4
How many oxygen stems are?

Answers

Answer:

Na2SO4 means: two moles sodium (45.98 g), one mole sulfur (32.06 g), and four moles oxygen (64.00 g) combine to form one mole of sodium sulfate (142.04 g).

Explanation:

Answer:

As we can see in the formulae, Na₂SO₄

We can see that 4 is the subscript of O and that means There are 4 atoms of oxygen.

CAVA Chemistry 302/303B Unit 2 Lab Report
THE MYSTERY SALT
Imagine that you have a barrel of salt, but you forgot to label it. You know it must be either KNO3, or KCl.
You look at the solubility curves for KNO3 and KCl and you find that at 35 degrees Celsius, 100 g of water can dissolve about 30 g of KNO3, or about 37 g of KCl.
The solubility curves disappear. You only remember the solubility for both salts at 35 degrees Celsius in 100g of water. You know absolutely nothing else about these salts.
You have a scale, a hot plate, a thermometer, empty beakers, and plenty of water. You do NOT have any labeled KNO3 or KCl.
1. What property can you use to determine whether the barrel contains KNO3 or KCl? Hint: Name the property you could use to identify the mystery salt? (1 point)
2. Explain exactly what you would do. Another person should be able to perform your test by following your procedure. Do not bother with why you are doing these steps. Just tell me exactly what to do to perform this test. Hint: Do NOT include any discussion of your results. Save that for #3. (2 points)
3. How would your results identify the mystery salt? Hint: What exact results would indicate KNO3? What results would indicate KCl? (2 points)

Name:
Answers
1 (Property):
2 (Procedure):
3 (Results):

Answers

1 property

2 procedure

Results

How many ATOMS are in 7.32 moles of sulfur
dioxide?

Answers

Using the concept of Avogadro's number, the number of atoms present is 4.4 * 10^24 atoms.

What is Avogadro's number?

Professor Avogadro provided a nice way of calculating the number of atoms in a molecules by the use of the Avogardro's number. Now we know that 1 mole of a substance contains about 6.02 * 10^23 atoms, molecules ions etc.

Hence;

1 mole of sulfur dioxide contains 6.02 * 10^23 atoms

7.32 moles of sulfur dioxide contains 7.32 moles  * 6.02 * 10^23 atoms/1 mole

= 4.4 * 10^24 atoms.

Learn more about Avogadro's number: https://brainly.com/question/1445383?


Question 1
1. Na2O + H20 --->
NaOH
A. Single Replacement
B. Double Replacement
c. Decomposition
D. Synthesis
E. Combustion

Answers

Answer: D. Synthesis

Explanation:

Sodium Oxide + Water = Sodium Hydroxide

What is the correct formula for sodium carbonate?
a. Na(CO3)2
b. Na,(CO3)2
C. Na2CO3
Naz(CO)2
e. NaCO3
d.
a
a
b
b
ΟΟΟΟΟ
С
С
d
d
е
e

Answers

Answer:

na2 co3

Explanation:

sodium carbonate formula

Answer:

your answer is C.

Explanation:

this is what it would be like

O

|

|

Na+ C Na+

/ \

/ \

O- O-

what happens to the boiling point of hydrocarbon compounds when the number of carbon atom increases

A. Decreases
B. Increases
C. Remains the same
D. None of these

I NEED YOUR ANSWER RN GUYSS PLEASEE​

Answers

The boiling points of alkanes increases with increasing number of carbons. This is because the intermolecular attractive forces, although individually weak, become cumulatively more significant as the number of atoms and electrons in the molecule increases.



So therefore your answer choice will increase. (B)

how many grams of iorn reacts with 71 grams of chlorine to produce 117 grams of sodium chloride

Answers

Answer:

The answer to your question is: 71 g of Chlorine

Explanation:

Na = 46 g

Cl = ?

NaCl = 117 g

Equation

                     2 Na     +     Cl₂   ⇒   2 NaCl          

                     46g              X              117g

If we consider the law of conservation of matter, we know that the mass of the reactants equals the mass of the products, then

                   mass Na + mass Cl₂  = mass NaCl

                    46 g + X = 117

                    X = 117 - 46

                   x = 71 g of Chlorine        

If Steve throws a football 57 meters in 3 seconds, what is the average speed of the football?​

Answers

Answer:

19 m/s

Explanation:

57/3

Which is NOT a way nitrogen can be fixed or made more useful?
a
lightning
b
Nitrogen fixing bacteria
c
denitrification
d
assimilation

Answers

Answer:

A lightning

Explanation:

Will mark BRAINLIEST. Molarity
Please no Bs answers. Only going to be reported.

If water is added to 145 mL of a 0.55 M KOH solution until the volume is 250 mL, what will the molarity of the diluted solution be?

What is the molarity of the solution that results from diluting 35.0 ml of a 9.02M solution to a new volume of 45.0 ml?​

Answers

We can use the equation for dilutions that relates concentration and volume:

[tex]M_1V_1=M_2V_2[/tex]

where M is the molarity, V is the volume, and 1 and 2 refer to the initial and final states of the solution, respectively. Here, we are given the molarity of the initial solution and the volumes of the initial and final (diluted) solutions. To find the final concentration (i.e., the molarity of the diluted solution), we would be solving for M₂:

[tex]M_2=\frac{M_1V_1}{V_2} = \frac{(0.55 \text{ M})(145 \text{ mL})}{250 \text{ mL}} \\ M_2 = 0.319 \approx 0.32 \text{ M}.[/tex]

The molarity is given to two significant figures as both our M₁ and V₂ are given to two significant figures.

Note: Although our volumes are in mL instead of L, we do not need to convert them to L for the purposes of our calculation since we would be multiplying our V₁ and V₂ by a common factor that would cancel out in division. All that matters is the ratio between the two volumes, which is the same whether the volumes are in mL or in L.

---

We follow the exact same procedure in the second question as we did in the first problem: solve for M₂ given M₁ = 9.02 M, V₁ = 35.0 mL, and V₂ = 45.0 mL:

[tex]M_2=\frac{M_1V_1}{V_2} = \frac{(9.02 \text{ M})(35.0 \text{ mL})}{45.0 \text{ mL}} \\ M_2 = 7.02 \text{ M}.[/tex]

What 3 things will you do to dissolve a solid (salt) faster in a liquid (water)

Answers

Answer:

There are three ways to make solids dissolve faster: Break the solute into smaller pieces. Stir the mixture. * Heat the mixture.

Explanation:

Substances can dissolve in water three ways—by dissociation, dispersion, and ionization.

80 ml of carbon monoxide (CO) are reacted with 40 ml of oxygen (O2). What volume of carbon dioxide (CO2) is formed? 2CO + O2 → 2CO2



a. 200 ml


b. 120 ml


c. 80 ml


d. 40 ml

Answers

The volume of carbon dioxide is formed is Option C i.e. 80 ml.

Given that,

80 ml of carbon monoxide (CO) are reacted with 40 ml of oxygen ([tex]O_2[/tex]).

Based on the above information, the calculation is as follows:

Here the volume should be 80ml

Therefore we can conclude that The volume of carbon dioxide is formed is Option C i.e. 80 ml.

Learn more: brainly.com/question/16911495


Which of these indicates that a liquid has transferred thermal energy to the air?
O The liquid increases in temperature, and its particles lose kinetic energy
O The liquid decreases in temperature, and its particles gain kinetic energy
O The liquid increases in temperature, and its particles gain kinetic energy.
O The liquid decreases in temperature, and its particles lose kinetic energy
No

Answers

Answer:

The liquid decreases in temperature and its particles lose kinetic energy.

Temperature is proportional to kinetic energy, so if temperature decreases, kinetic energy decreases. Energy has been removed from the liquid, because it is in the air

The liquid decreases in temperature,and its particales lose kinetic energy

How many significant digits are in this number?
742800
1.6
2.5
3.4
4.3

Answers

3. There are 4 significant digits. The significant digits are 7428.

A horse weighs 240 kg. If its running at a speed of 18 m/s, what's the linear momentum of the horse

Answers

Answer: The answer is 4320

Explanation:

I got the answer correct

if answered correctly i will give brainlest​

Answers

Answer: Earthquake location

Explanation:

Answer:

Volcano chains and arcs, and earthquake locations

Use the balanced chemical equation below to answer the following: How many moles of
oxygen are required to react along with 6 moles of butane (C4H10) according to the
following equation? Do not list units in your final answer.
2 C4H10 + 13O2 ------> 8CO2 + 10H2O

Answers

hmm, i not sure i come back later with the answer.

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Louis wants to carpet the rectangular floor of his basement. The basement has an area of 507 square feet. The width of the basement is 1/3 its length.What is the length of Louis's basement?plz help i stayed all night thinking about this but still it doesn't click in my brain 60 POINTS!! PLEASE HELP ASAP 4. Which statement is true about air pressure?a. Changes in air pressure keep temperatures constantb. Air pressure does not change with densityc. Air pressure is lower at the ground and higher as elevation increasesd. A higher temperature causes greater air pressure Can u pls help me with this question common lit capataliasmn-Which phrase best describes the relarionship between workers and bussiness owners in capatalists cociety Emergency conditions can occur that require a president to make quick decisions. Which TWO tools would a president most likely use in such a situation?- power of pardon- executive order- law of presidential succession- power of veto- state of emergency declaration (GIVING BRAINLIEST!!!!)How did the Framers of the Constitution ensure the power of the legislative branch was limited?A) The judicial branch has to approve laws.B) Senators can serve only two terms.C) The president can veto laws.D) Only states can create laws for themselves. By buying on the installment plan,Americans wereF buying goods they could not afford.G buying on credit.H getting into debt.all of the above Factor the expression. 7x+42 describe the role of primary transcript in RNA processing in eukaryotes NEED HELP FAST 20 POINTS AND I WILL GIVE BRAINLIEST!!!!!!!! Which type of basic approach is important to apply no matter what type of note-taking system a person uses? A. Notes should come from as many different sources as possible. B. Notes should honor the original source by including direct quotations. C. Notes should correctly capture the key ideas of a text in the note-takers own words. D. Notes should be written as lists, short phrases, or other abbreviated styles of text. Find a quote in chapter 7 of The Outsiders showing that "Everybody loved SodaPop, even when he was being ornery. And the media took a bunch of pictures of Darry and Soda because they were so good looking." marbles numbered from 1 to 12 are put in a bag. if marbles are not put back into the bag after being drawn, what is the probability of drawing two prime numbers in a row? A flute case is shaped like a rectangular prism. The case is 5 inches tall, 3 inches wide, and has a volume of 255 cubic inches. What is th elength of the flute case? Which of these is a way of making applications less vulnerable to hacking?make Deny the defaultmake Allow the defaultapply the principle of greatest privilegehave a single point of defense B Identify the nouns and sort them into the correct categories.toothfarmjoyhappydoctorthemwolfhopecheeseschoolkittenyourRahulorangeIndiaPersonPlaceAnimalThingIdea or feelingRahul risk-taking behaviors could lead to aggressive driving.Oa) noOb) decreasedOc) increased A piece of gold aluminum alloy weighs 49N. When suspended from a balance and submerged in water it weighs 39.2. What is the weight of gold in the alloy of relative density of gold if 19.3 and aluminum is 2.5 What did the Japanese think would happen if they defeated the US carrier fleet? 1/3log125/8-2log2/5+log80/125 different between physical environment and mental environment