Answer ASAP Homework

Answer:

d cell membrane:)

Explanation:

Answer:

2Mg + O2 → 2MgO

Explanation:

Answer:

3.77 moles of Fe contain 2.27 × 10, 24 as an exponent

Answer:

Claim 1- The evidence that supports my claim because Evidence Card b says “One man got sick, but his two children did not. He used water from Whip River. He used  the cube to heat the first pitcher of water, which he gave to his kids, and then reused the  cube without reheating for the second pitcher, which he drank himself.”    My first piece of evidence is that if you don't follow thee directions then something bad would happen

Explanation:

Answer:

CO2

Explanation:

CO2 or carbon dioxide is produced when iron is extracted from its ore. Carbon monoxide Co is used as reducing agent in iron extraction. In this reaction iron ore is reduced to iron and CO is oxidized to CO2 or carbon dioxide which is released in the process. There extraction of iron is redox reaction.

Answer:

I think it is B

Explanation:

Answers: A

Explanation: just took the quiz on usatestprep

Answer:

increase

Explanation:

Answer:

[tex]\boxed {\boxed {\sf 56 \ Joules}}[/tex]

Explanation:

We are given the mass, specific heat, and temperature, so we must use this formula for heat energy.

[tex]q=mc \Delta T[/tex]

The mass is 5 grams, the specific heat capacity is 0.14 Joules per gram degree Celsius. Let's find the change in temperature.

We know the variables and can substitute them into the formula.

[tex]m= 5 \ g \\c= 0.14 \ J/ g \ \textdegree C \\\Delta T= 80 \ \textdegree C[/tex]

[tex]q= (5 \ g )( 0.14 \ J/ g \ \textdegree C ) ( 80 \ \textdegree C)[/tex]

Multiply the first numbers. The grams will cancel.

[tex]q= 0.7 \ J/ \textdegree C(80 \ \textdegree C )[/tex]

Multiply again. This time the degrees Celsius cancel.

[tex]q= 56 \ J[/tex]

56 Joules of heat are needed.

Answer:

The perimeter of a Rectangle P= 2(l + b)

Area of a Rectangle A = l × b

Answer:

The temperature will be 384.7 K

Explanation:

Charles's Law consists of the relationship that exists between the volume and the temperature of a certain quantity of ideal gas, which is maintained at a constant pressure, by means of a constant of proportionality that is applied directly. For a given sum of gas at a constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases because the temperature is directly related to the energy of the movement of the gas molecules. .

In summary, Charles's law is a law that says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:

[tex]\frac{V}{T} =k[/tex]

Having an initial state 1 and a final state 2, the following is true:

[tex]\frac{V1}{T1} =\frac{V2}{T2}[/tex]

In this case:

Replacing:

[tex]\frac{33.9 L}{285.4 K} =\frac{45.7 L}{T2}[/tex]

Solving:

[tex]T2=45.7 L*\frac{285.4 K}{33.9 L}[/tex]

T2= 384.7 K

The temperature will be 384.7 K

Answer: The equation represents a neutralization reaction is HNO3(aq) + KOH(aq) → KNO3(aq) + H2O(). The answer is letter C.

Answer:

The answer is C.

Explanation:

Edge2021

Answer:

Standard acid-base reaction in two stages:

Na2CO3 + HCl → NaHCO3 +NaCl

NaHCO3 + HCl → NaCl + CO2 + H2O

If only a small quantity of acid is added (and the overall solution remains above pH 7), the reaction would stop at stage 1 and you’d be left with an aqueous solution of sodium chloride and sodium bicarbonate. Adding more acid would lead to the bicarbonate being converted to carbon dioxide and water, with the CO2 coming out of solution as a gas and more sodium chloride being produced.

Answer:

1. No reaction.

2. ZnCl₂ + H₂

3. CaCl₂ + H₂

Explanation:

1. Cu + HCl —> ___

From the reactivity series of metals, H is higher that Cu in the series and so, Cu can not displace H from solution.

Therefore, no reaction will occur.

2. Zn + HCl —> ___

Zn is higher than H in the activity series so, it will displace H from acid solution to produce hydrogen gas, H₂.

The balanced equation is given below:

Zn + 2HCl —> ZnCl₂ + H₂

3. Ca + HCl —> ___

Ca is higher than H in the activity series so, it will displace H from acid solution to produce hydrogen gas, H₂.

The balanced equation is given below:

Ca + 2HCl —> CaCl₂ + H₂

Answer:

19.32 g/cm³

Explanation:

The density will remain the same no matter how many times you cut the gold.  The density is g/cm³ or g/mL.  Density is essentially how many grams 1 mL of a compound weighs.

Answer:

[tex]\boxed {\boxed {\sf 19.32 \ g/cm^3}}[/tex]

Explanation:

Density is the mass per volume (g/mL or g/cm³). It is an intrinsic property. This means it is not dependent on the amount and all samples of the same substance have the same density.

Therefore, if a piece of gold has a density of 19.32 grams per cubic centimeter and it is cut in half, the two pieces will have the same density.

Answer:

B.

Explanation:

The atomic model represents the position of the sub-atomic particles. Model A was proposed after Rutherford's scattering experiment where the positive particles were deflected in the middle. Thus, option A is correct.

Rutherford's atomic model proposed the presence of the positive nucleus in the middle of the atom while the electrons surrounded them in their orbitals with a negative charge.

He performed the scattering experiment where alpha particles emitted by the radioactive element were used to locate the positions of the electrons, neutrons, and protons.

According to the experiment, model A, best fits as the nucleus made of protons and neutrons takes the center of the atom with negative electrons surrounding them. The nucleus is small as compared to the entire atom.

Therefore, option A. model A best proposes Rutherford's model.

Learn more about Rutherford's model here:

https://brainly.com/question/17941604

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Answer:

50kg

Explanation:

Using the formula for potential energy, which is the amount of energy due to position;

P.E = m × g × h

Where;

m = mass (kg)

g = acceleration due to gravity (10m/s²)

h = height (metres)

According to the information provided in this question, m = ?, P.E = 2500J, h = 5m

Using P.E = m × g × h

m = P.E/gh

m = 2500/(5 × 10)

m = 2500/50

m = 50kg

The mass of the man is 50kg.

Answer

well it gets used

Explanation:

because it generates power through fission

Answer:

D

Explanation:

Answer:

the answer is D I did that one in 5th grade

Answer:

Because it lost momentum!

Explanation:

Hope this helps! Plz mark brainliest! :)

Explanation:

Ni + 2KCl → 2K + Nicl2

It form

potassium and nickel chloride.

Answer:

physical

Explanation:

Answer:

peanut butter

Explanation:

because you have 10 pieces of bread, 4 tbs of peanut butter, and 20 tbs of jelly, meaning you can make 5 sandwwitches with the bread, 4 sandwitches with the peanut butter, and 10 sandwitches with the jelly. so you dont have enough peanut butter to make all the sandwitches

According to the given scenario,  If one have 10 pieces of bread, 4 tablespoons of peanut butter, and 20 tablespoons of jelly, the limiting reactant will be peanut butter.

What is a limiting reactant?

The reactant that gets consumed first in a chemical reaction and result in limiting the formation of product is referred to as a limiting reactant.

According to the given scenario, the quantity of peanut butter will get consumed first so it will act as a limiting reactant.

Thus, If one have 10 pieces of bread, 4 tablespoons of peanut butter, and 20 tablespoons of jelly, the limiting reactant will be peanut butter.

For more details regarding limiting reactant, visit:

https://brainly.com/question/14225536

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Answer:

Hey sis

will you be my sis??

please give reply

I will be waiting

and fol.low.me

Answer:

The pH scale measures how acidic or alkaline — basic — something is. Your body works constantly to carefully control pH levels of blood and other fluids. The body's pH balance is also called the acid-base or acid-alkaline balance. The right pH levels are needed for good health.

Answer:

help with what? Let me know in the comments! :)

Explanation:

Answer:

Unbalanced

Explanation: