PLS HELP THIS IS SCIENCE !!

IGNORE THE QUESTIONS I ACCIDENTLY PRESSED ON

PLS HELP THIS IS SCIENCE !!IGNORE THE QUESTIONS I ACCIDENTLY PRESSED ON
PLS HELP THIS IS SCIENCE !!IGNORE THE QUESTIONS I ACCIDENTLY PRESSED ON
PLS HELP THIS IS SCIENCE !!IGNORE THE QUESTIONS I ACCIDENTLY PRESSED ON

Answers

Answer 1

Answer:

10.)14

Explanation:

MARK AS BRAINLEST!!

Answer 2

Answer:

where is the answer??

Please do not just take the points without answering the question.


Related Questions

What type of reaction does this illustration represent?


A. synthesis
B. decomposition
C.single-replacement
D.double replacement

Answers

Answer: IS B

Explanation:

Decomposition

I would say the answer is A.synthesis please correct me if I’m wrong:)

⚠️⚠️What is kinetic energy ? ⚠️⚠️

Energy of work
Energy of movement
Energy of gravity
Energy of power

⚠️⚠️PLEASE HELP IM BEING TIMED⚠️⚠️⚠️

Answers

Answer:

Energy of Movement.

Explanation:

Have a great day!

What is the balanced equation for the reaction of a solution of sodium sulfate is mixed with strontium chloride?

Answers

Answer:

NaSO⁴(ads) ,ganadicate

Explain the process of fermentation.

Answers

Answer:

Fermentation, chemical process by which molecules such as glucose are broken down anaerobically. More broadly, fermentation is the foaming that occurs during the manufacture of wine and beer, a process at least 10,000 years old. The frothing results from the evolution of carbon dioxide gas, though this was not recognized until the 17th century.

Explanation:

looked it up-

Answer:

like babies or milk and cheese?

Explanation:

HELP ME PLEASEEEEE its chem
1. The thermal waters of a spring have a hydronium ion (H3O+) concentration of 2.00 x 10-6 M. Calculate the pH of the water.

2. Acetic acid (CH3COOH) is one of the simplest carboxylic acids. It is an important chemical reagent and industrial chemical. Vinegar is dilute acetic acid, often produced by fermentation. The following is a reversible reaction:
CH3COOH ↔ H+ + CH3COO–
• Write the set up you would use to calculate the Ka of this reaction.
• Calculate the hydrogen ion concentration [H+] of a 0.1 M solution of acetic acid given that the dissociation constant of acetic acid is Ka = 1.8 x10–5. Work must be shown to earn credit.

3. Describe the reaction of a strong acid and a weak base. In general, what will the final pH be when the reaction between equal moles of a weak acid and a strong base is complete? Explain your answer.

Answers

Answer:The thermal waters of a spring have a hydronium ion (H3O+) concentration of 2.00 x . 2. Acetic acid (CH3COOH) is one of the simplest carboxylic acids. It is an important chemical reagent and industrial chemical.Have a hydronium ion (H3O+) concentration of 2.00 x 10-6 M. Calculate the pH of the water.

Explanation: The thermal waters of a spring have a hydronium ion (H3O+) concentration of 2.  spring have a hydronium ion (H3O+) concentration of 2.00 x 10-6 M. Calculate the pH of the water. 2. Acetic acid (CH3COOH) is one of the simplest carboxylic acids. It is an important chemical reagent and industrial chemical.

What two forces act in the nucleus to create a 'nuclear tug-of-war'?
a.
Covalent bond, ionic bond
c.
Van der waals force, dipole
b.
Electrostatic repulsion, strong nuclear force
d.
All of the above

Answers

Answer:

Electrostatic repulsion, strong nuclear force

Explanation:

The nucleus consists of protons and neutrons. protons are positively charged while neutrons possess no charge.

Since protons are positively charged, they repel each other strongly (like charges repel). This strong repulsion of like charges makes the nucleus somewhat unstable leading to spontaneous fission of heavy nuclei.

However, an opposing force called nuclear attractive force tends to hold the nucleons together. This attraction occurs when two nucleons are bonded by a particle called a π meson.

Hence, the two forces that act in the nucleus to create a  'nuclear tug-of-war' are electrostatic repulsion and a strong nuclear force.

Question 2(Multiple Choice Worth 2 points)
(04.06 LC)
The properties of elements can be predicted by which of the following?
Where it is on the periodic table
Where it was discovered
Its color in its natural state
Its name

Answers

Answer:

location on the periodic table

Explanation:

A 25.0 L tank of nitrogen gas is at 25 oC and 2.05 atm . If the temperature stays at 25 oC and the volume is decreased to 14.5 L , what is the new pressure?

Answers

Answer:

[tex]\boxed {\boxed {\sf P_2 \approx 3.53 \ atm}}[/tex]

Explanation:

In this problem, the temperature stays constant. The volume and pressure change, so we use Boyle's Law. This states that the pressure of a gas is inversely proportional to the volume. The formula is:

[tex]P_1V_1=P_2V_2[/tex]

Now we can substitute any known values into the formula.

Originally, the gas has a volume of 25.0 liters and a pressure of 2.05 atmospheres.

[tex]25.0 \ L * 2.05 \ atm = P_2V_2[/tex]

The volume is decreased to 14.5 liters, but the pressure is unknown.

[tex]25.0 \ L * 2.05 \ atm = P_2 * 14.5 \ L[/tex]

Since we are solving for the new pressure, or P₂, we must isolate the variable. It is being multiplied by 14.5 liters and the inverse of multiplication is division. Divide both sides by 14.5 L .

[tex]\frac {25.0 \ L * 2.05 \ atm }{14.5 \ L}=\frac{P_2 *14.5 \ L}{14.5 \ L}[/tex]

[tex]\frac {25.0 \ L * 2.05 \ atm }{14.5 \ L}= P_2[/tex]

The units of liters cancel.

[tex]\frac {25.0 * 2.05 \ atm }{14.5 }=P_2[/tex]

[tex]\frac {50.25\ atm }{14.5 }=P_2[/tex]

[tex]3.53448276 \ atm = P_2[/tex]

The original values of volume and pressure have 3 significant figures, so our answer must have the same.

For the number we found, that is the hundredth place.

3.53448276

The 4 in the thousandth place (in bold above) tells us to leave the 3 in the hundredth place.

[tex]3.53 \ atm \approx P_2[/tex]

The new pressure is approximately 3.53 atmospheres.

Which statement is true about the rotational period of the moon?


greater than the revolution period around Earth


always changing


less than the revolution period around Earth


equal to the revolution period around Earth

Answers

less than the revolution perilous around earth

The statement is true  about the rotational period of the moon " the rotational period of the moon is equal to the revolution period around Earth."

What is rotational period?

A celestial object's rotation period may relate towards its sidereal rotation period, which is the time it takes for the object to complete one revolution around in its axis of rotation in sidereal seems like to the background stars.

What is revolution period?

The orbital period is also known as the revolution period. it takes for one astronomical object to complete one cycle around another. It refers to planets and asteroids orbiting the Sun, moons orbiting planets, planetary systems orbiting other stars, or double stars in astronomy.

What is moon?

In the night sky, the moon is just the brightest object. The moon doesn't at all produce its own light. It has no radiance. That is visible because the sun's light bounces off of it.

The rotational period of the moon is equal to the revolution period around Earth because the moon's rate of spin becomes tidally locked to its rate of revolution, it maintains the same face oriented towards the Earth In other words, every time the moon rounds the Earth, it rotates exactly once.

Therefore, the rotational period of the moon is equal to the revolution period around Earth will be correct answer.

To know more about rotational period click here.

https://brainly.com/question/242421.

#SPJ2

How many moles of hypomanganous acid. H3 MnO4, are contained in 22.912 g?

Answers

Answer:

0.188mol

Explanation:

Using the formula;

mole = mass/molar mass

Molar mass of hypomanganous acid. (H3MnO4) = 1(3) + 55 + 16(4)

= 3 + 55 + 64

= 122g/mol

According to this question, there are 22.912g of H3MnO4

mole = 22.912g ÷ 122g/mol

mole = 0.188mol

Which processes involve nuclear changes?
A. fission and fusion
B. erosion and weathering
C. combustion and oxidation
D. evaporation and condensation

Answers

Answer:

Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve changes in nuclear binding energies.

Explanation:

mark me brainliest please

How much heat do you need to raise the temperature of 300 g of ethanol from 0°C to 20°C?​

Answers

Answer:

14.6

Explanation:

I just took the test

The amount of heat to raise the temperature is 14.7J.

How do you calculate the heat needed to raise the temperature?

The specific heat capacity of a substance is the quantity of heat needed to raise the temperature of a unit quantity of the substance by one degree. Calling the amount of heat added Q, which will cause a change in temperature ∆T to a weight of substance W, at a specific heat of material Cp, then Q = w x Cp x ∆T

By applying the formula, we get

Q = w x Cp x ∆T

Q = 300 * 2.46 * 20/1000

Q = 14.760J

What is heat?

Heat is energy that is transferred from one body to another as the result of a difference in temperature.

Learn more about the heat here: brainly.com/question/13439286

#SPJ2

Which model illustrates a compound A, b, c, d,

Answers

Answer: C

Explanation: I have the same question, it’s for summit, my teacher helped me with this question :)

Help me Look at the pictures!!!! Past due!
Make an explanation of how my hypothesis is not supported.

Answers

Answer:

Explanation:

the temperture of the warmer water will make it have more space and have less density in the water.

Oxygen has 6 valence electrons. how many hydrogen atoms (who have 1 valence electrons) can bond with it? remember the octet rule.

Answers

Answer:

two hydrogen can bonded with oxygen to form H2O

WILL MARK BRAINLIEST
What is the oxidation state of Carbon in CaC2O4?

Answers

Answer:

The oxidation state of carbon in CaC204 is 3

Answer:The oxidation number of the carbons + the oxidation numbers of the oxygens must equal -2. Carbons + (-8) = -2 so the oxidation number of the carbons must be +6. Since there are 2 carbon atoms each must contribute +3 each. What is the oxidation number of S in Na2S2O3?

Explanation:

The oxidation state of Oxygen is -2 and that of Calcium is +2. There are four oxygen atoms which amounts to -8 charge. This leaves a charge of +6 on Carbon

can someone answer dis:
1) The atomic number of an element shows how many ___________ there are in its atoms.
thankss

Answers

I think that the answer is protons

Please helppppp!!! I have 10 minutes left!!!

Answers

Answer:

I think it's the ash can mix with rivers to form mudflows

Help calculate the density and please type it like this and explain how you got the answer thanks

Mass:
Volume;
Density:

Answers

Answer: 2.5

Explanation:

density= 2.5

mass= 62.5 or 62.50

volume= 25 ( 75-50= 25)

so divide 62.5( or 62.50) by 25 which will led you to 2.5

is sodium potassium nitrate exo or endo?​

Answers

endothermic

Explanation:

I believe it's an endothermic but I'm not all too sure

Answer:

Pottasium nitrate is highly exothermic!However the dissolution of sodium nitrate in water is endothermic. Heat is absorbed during process.

When maganese dioxide is added to hydrogen chloride you get water maganese dichloride and chlorine gas write the balanved equation

Answers

Answer: When maganese dioxide is added to hydrogen chloride you get water maganese dichloride and chlorine gas then balanced equation is [tex]MnO_{2} + 4HCl \rightarrow 2H_{2}O + MnCl_{2} + Cl_{2}[/tex].

Explanation:

The word equation is given as maganese dioxide is added to hydrogen chloride you get water maganese dichloride and chlorine gas.

Now, in terms of chemical formulae this reaction equation will be as follows.

[tex]MnO_{2} + HCl \rightarrow H_{2}O + MnCl_{2} + Cl_{2}[/tex]

Here, number of atoms on reactant side are as follows.

Mn = 1O = 2H = 1Cl = 1

Number of atoms on product side are as follows.

Mn = 1O = 1H = 2Cl = 4

To balance this equation, multiply HCl by 4 on reactant side and multiply [tex]H_{2}O[/tex] by 2 on product side. Therefore, the equation can be rewritten as follows.

[tex]MnO_{2} + 4HCl \rightarrow 2H_{2}O + MnCl_{2} + Cl_{2}[/tex]

Hence, number of atoms on reactant side are as follows.

Mn = 1O = 2H = 4Cl = 4

Number of atoms on product side are as follows.

Mn = 1O = 2H = 4Cl = 4

Since, this equation contains same number of atoms on both reactant and product side. Therefore, this equation is now balanced equation.

Thus, we can conclude that when maganese dioxide is added to hydrogen chloride you get water maganese dichloride and chlorine gas then balanced equation is [tex]MnO_{2} + 4HCl \rightarrow 2H_{2}O + MnCl_{2} + Cl_{2}[/tex].

balance FeCl3 + MgO ---> Fe2O3 + MgCl2

Answers

Answer: The balanced equation is [tex]2FeCl_{3} + 3MgO \rightarrow Fe_{2}O_{3} + 3MgCl_{2}[/tex]

Explanation:

The given reaction equation is as follows.

[tex]FeCl_{3} + MgO \rightarrow Fe_{2}O_{3} + MgCl_{2}[/tex]

Here, number of atoms present on reactant side are as follows.

Fe = 1Cl = 3Mg = 1O = 1

Number of atoms on product side are as follows.

Fe = 2Cl = 2Mg = 1O = 3

To balance this equation, multiply [tex]FeCl_{3}[/tex] by 2 and MgO by 3 on reactant side. Also, multiply [tex]MgCl_{2}[/tex] by 3 on product side. Therefore, the equation can be rewritten as follows.

[tex]2FeCl_{3} + 3MgO \rightarrow Fe_{2}O_{3} + 3MgCl_{2}[/tex]

Hence, number of atoms on reactant side are as follows.

Fe = 2Cl = 6Mg = 3O = 3

Number of atoms on product side are as follows.

Fe = 2Cl = 6Mg = 3O = 3

Since, this equation contains same number of atoms on both reactant and product side. Therefore, this equation is now balanced equation.

Thus, we can conclude that the balanced equation is [tex]2FeCl_{3} + 3MgO \rightarrow Fe_{2}O_{3} + 3MgCl_{2}[/tex].

The graph shows the speed of a car
traveling east over a 12 second
period. Based on the information in
the graph, it can be concluded that
in the first 6 seconds, the car is -
A changing its direction.
B experiencing less and less
friction.
moving at a constant speed
D climbing a steep incline.

Answers

Answer:

Letter B.

Explanation:

Changing its direction and climbing a steep incline can't be proven only by the graph info. You can see that it's speed isn't constant in the graph.

We have letter B left.

How many grams of sodium chloride could be produced from 41.3 L of chlorine gas?

Answers

Answer:

The grams of sodium chloride that will be made is 292.5 g. calculation. 2Na + Cl₂ → 2NaCl. step 1: calculate the moles of Na. moles = mass/molar mass. From periodic table the molar mass of Na = 23 g/mol. moles = 115 g/23 g / mol = 5 moles. Step 2 : use the mole ratio to determine the moles of NaCl. Na:NaCl is 2:2 = 1:1 therefore the moles of NaCl is also = 5 moles.

Explanation:

We know sodium is a very active metal and chlorine is also a very reactive non-metal. Usually, metals like to eliminate electrons and non-metals such as halogens like to accept electrons. Sodium readily eliminate its last shell electrons become Na+ cation and chlorine accepts that electron to form Cl-anion.

how many moles of HCI will react with 18.13g of SrO

Answers

Answer:

Explanation:

The balanced chemical equation between

SrO + 2HCl → H2O + SrCl2

A jar is filled to the top with water, and a piece of cardboard is slid over the opening so that there is only water in the . If the jar is now turned over, will the cardboard fall off? What will happen if there is any air in the jar?

Answers

Answer:

it will all fall unless these is air

Explanation:

Answer:

If you do it carefully enough, a small amount of water will pour out of the glass — that's supposed to happen. But try not to let any air bubbles get into the glass. Finally, slowly remove the hand holding the cardboard in place.

what are radioactive tracers used for

Answers

Answer:

Radioactive tracers are widely used to diagnose industrial reactors, for instance by measuring the flow rate of liquids, gases and solids.

Explanation:

Radioactive tracers are widely used to diagnose industrial reactors, for instance by measuring the flow rate of liquids, gases and solids. A radioactive tracer is a chemical compound in which one or more atoms have been replaced by a radioisotope.

heres the link for more information

https://www.iaea.org/topics/radiotracers#:~:text=Radioactive%20tracers%20are%20widely%20used,been%20replaced%20by%20a%20radioisotope

.

PLS HELP ON A TIMER!
if the pressure exerted by a sample of carbon dioxide at 25° C in a volume of 0.44L is 3.81 atm, what is the mass of the carbon dioxide?
A. .0685
B. 1.65
C. 3.02
D. 14.4

Answers

Answer:

3.02

Explanation:

Please help me with number 43

Answers

Answer:

The reason why atomic mass is usually not a whole number is because it is a weighted average of the mass numbers of isotopes

Explanation:

Help help help I will give brainliest

Answers

Answer:

its b alkyne

Explanation:

brinliest po plsss

Answer:

Alkyne so its b

Other Questions
PLEASE HELP WILL GIVE BRAINLIEST AND LOTS OF POINTS what is the image of the point (-2,7) after a rotation of 180 degrees counterclockwise about the origin? What is the equation of the function graphed below? Please help I'm struggling a line passes through point (-10,3) and has a slope of 1/2. write an equation in Ax+By=C form for this line. Use integers for A, B, and C How did the surrounding seas affect Japan's development help me plz god bless Question 4 of 40A building has three elevators. Each elevator is out of order 30% of the time.The following set of random numbers represents 20 simulations of theelevators, with 0, 1, and 2 representing a broken elevator and 3, 4, 5, 6, 7, 8,and 9 representing a working elevator. In how many of the simulations wereall three elevators working?931188 763 841 559 144 652 277653 673404 396 011 843 599 797 414 761 273 844 A piece of string is 120 centimeters long.How long would the piece of string measure in meters?. please help omg- AAAAAAAAAAAAAAAAAAAAA PLEASE HELP!!!! - DUE SOON YOU WILL GET 40 POINTS FOR ANSWERING THESE QUESTIONS - PLEASE PLEASE PLEASE TRY TO SHOW WORK! - LINKS=REPORTED!!! - please help me with full calculations The Nazis looked at Jews as thisinstead of a religion Need help on this question! Maybe be mark brainliest? in pcr,a. the gene sequence is determinedb. multiple copies of the dna sample are madec. dna is destroyed so it has no value In a survey of 554 U.S. adults, it is found that 360 favor a ban on stem cell research. Set up the null and the alternative hypotheses to test whether there is sufficient evidence that over 61% favor a ban on stem cell research. If alpha is set to 3.0%, should the null hypothesis be rejected 10. A new fish tank has a volume of 10x2 + 30x -40 cubic inches. Assuming V =LWH, determine the expressions of the length, width and height of the fish tank. Someone help me with this Describe a type of self-disclosure that you might provide to a friend but avoid making with a relative. What factors influence your decision to make or not make that disclosure? Which have lower densities, liquids or gases? Why?