HELP NOW PLEASE
A substance is matter that is ____ and has a ____ composition?

Answer:

Heat is the process of something getting hot(temperatures going up). Cold is when something gets cold(temperature decreases).

Explanation:

(a). Sodium hydroxide: NaOH, aluminum hydroxide: \(Al(OH)_3\)

(b). The parentheses are necessary for aluminum hydroxide because the hydroxide polyatomic ion has a subscript of 3, indicating that there are three hydroxide ions for every one aluminum ion.

a) The formula for sodium hydroxide is NaOH, and the formula for aluminum hydroxide is \(Al(OH)_3\)

b) Aluminum hydroxide requires brackets because there are three hydroxide ions for every one aluminum ion, according to the hydroxide polyatomic ion's subscript of 3. Without the parentheses, it would be unclear whether the subscript of 3 applies to only the oxygen or to the entire hydroxide ion. By enclosing the entire hydroxide ion in parentheses and placing the subscript outside the parentheses.

To know more about aluminum ion, here

brainly.com/question/21373859

#SPJ1

Answer:an advantage for using a renewable resources is the it really dont take up oil a it could be renewed one disadvantage is that it cost alot

on advantage for a non renewable is that it doesnt cost alot and one disadvantage is that it can't be renewed

Explanation:

Answer:

Renewable energy has several advantages and disadvantages. The advantages of renewable energy include unlimited supply, low environmental impact, and increased opportunities for employment. While these advantages are nice, there are some disadvantages. These include less reliability than nonrenewable energy, difficulty storing and transporting the energy, and higher costs.

Explanation:

Did it on edge

The SI unit to the quantity it measures are:

Mass: The mass of an object is a measure of its amount of matter. The SI unit of mass is the kilogram (kg) or gram (g).

Temperature: Temperature is a measure of the average kinetic energy of the particles in a substance. The SI unit of temperature is the kelvin (K).

Time: Time is a measure of the interval between two events. The SI unit of time is the second (s).

Electric current: Electric current is a measure of the flow of electric charge. The SI unit of electric current is the ampere (A).

Find out more on SI unit here: https://brainly.com/question/16393390

#SPJ1

Complete question:

Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.

Match each SI unit to the quantity it measures.

Answer:

B

Explanation:

Answer:

15

Explanation:

Magnesium Acetate Mg(C2H3O2)2

Number of atoms:

Carbon = 4

Hydrogen = 6

Magnesium = 1

Oxygen = 4

Total = 15

Answer:

Lower the pH slightly

Explanation:

The mixture of HF, hydrofluoric acid and KF, potassium fluoride produce a buffer that is defined for the equilibrium:

HF(aq) → H⁺(aq) + F⁻(aq)

The buffer can maintain the pH of a solution despite the addition of strong bases or acids.

The reaction of HF with Ca(OH)2 is:

2HF + Ca(OH)2 → 2H2O + CaF2

That means the calcium hydroxide is decreasing the concentration of HF. Based on the equilibrium, the H+ and F- ions will decrease in order to produce more HF. As H+ is decreasing due the equilibrium and not for the addition of a strong base, the pH is decreasing slightly.

The mass of ASA - Acetylsalicylic acid per tablet is 214.9 mg. The number of moles present in the tablet, is 0.001190.

For this experiment it is important to find the number of moles of ASA present in the solution. By doing this we will get the amount of ASA in the tablet also.

Students prepared a solution by hydrolyzing 0.3219 g of a crushed aspirin tablet in NaOH and then diluting with DI water in a 100-mL volumetric flask.

Number of moles = mass of ASA / molar mass of ASA

The molar mass of ASA = 180.16 g/mol

Therefore, Number of moles = 0.3219 g / 180.16 g/mol

= 0.001785 mol.

Now finding the number of moles present in the tablet,

Moles in tablet = (moles of ASA from solution) x (mass of tablet / mass of solution)

= 0.001785 mol x (0.4267 g / 0.3219 g x 1.50 mL / 50 mL)

= 0.001190 mol

Now finding the mass of ASA,

Mass of ASA per tablet = (moles of ASA in tablet) x (molar mass of ASA)

= 0.001190 mol x 180.16 g/mol

= 0.2149 g or 214.9 mg

Learn more about Acetylsalicylic acid:

https://brainly.com/question/30588213

#SPJ4

Answer:

How do amoeba respire.

Define Diffusion.

Answer:

I think its D

Explanation:

I'm not sure tho

55.03 moles of KCI are produced when 6743 grams of \(KClO_{3}\) decomposes

To determine the number of moles of KCl produced when 6743 grams of \(KClO_{3}\) decomposes, we need to use the concept of molar mass and the balanced chemical equation.

First, let's calculate the molar mass of \(KClO_{3}\)

The molar mass of potassium (K) is approximately 39.10 g/mol.

The molar mass of chlorine (Cl) is approximately 35.45 g/mol.

The molar mass of oxygen (O) is approximately 16.00 g/mol.

So, the molar mass of \(KClO_{3}\) is:

(39.10 g/mol) + (35.45 g/mol) + (3 * 16.00 g/mol) = 122.55 g/mol.

Now, we need to calculate the number of moles of \(KClO_{3}\):

Number of moles = Mass / Molar mass

Number of moles = 6743 g / 122.55 g/mol = 55.03 mol.

According to the balanced chemical equation:

2\(KClO_{3}\) -> 2 KCl + 3 O2,

we can see that for every 2 moles of \(KClO_{3}\), we obtain 2 moles of KCl.

Therefore, the number of moles of KCl produced will be equal to the number of moles of \(KClO_{3}\) since the ratio is 1:1. Thus, 55.03 moles of KCl will be produced.

Know more about molar mass here:

https://brainly.com/question/837939

#SPJ11

Answer:

C |||| It is not practical because it takes a huge amount of water to produce a new pair of jeans

Explanation:

If you're doing flvs then it's C.

Answer:

C!

Explanation:

i got it right on the test UwU

The rate equation is Rate = k[A]²[B]³, and the reaction has an overall order of 5.

A rate law illustrates how a chemical reaction's rate is influenced by the reactant's concentration. The rate law typically has the formula rate = k[A]n for reactions like aA products, where k is the proportionality constant also known as the rate constant. and The reaction's sequence in relation to A is indicated by n.

Rate = k[A]x[B]y

Rate = k[A]²[B]³

Overall order = 2 + 3 = 5

Therefore, the overall order of the reaction is 5, and the rate equation is Rate = k[A]²[B]³.

To know more about reaction visit:-

https://brainly.com/question/28984750

#SPJ1

Answer:

There are a total of 56 ethnic groups in China, with 56 ethnic groups and 56 family members.

Explanation:

There are a total of 56 ethnic groups in China, with 56 ethnic groups and 56 family members.

Answer:

Tings that effect weather is basically the following:

Answer:

A. Sugar

Explanation:

Sugar dissolves in water because of its molecular structure (C6H12O6), as the sugar is put in the water, energy is released and the polarity of the water breaks apart the molecules. However, the molecules can be obtained back by evaporating the water.

Answer:

2,050,000,000,000 mL

Explanation:

To find the volume in mL, you need to (1) convert the mass from µg to g  and then (2) calculate the volume (by multiplying the mass by the density). It is important to arrange the conversion in a way that allows for the cancellation of units (the desired unit should be in the numerator). Discrediting the sig figs of the density (because official conversions do not affect sig figs), the final answer should have 3 sig figs like the given mass.

(Step 1)

1 x 10⁻⁶ µg = 1 g

  986 µg                   1 g
----------------  x  --------------------  =  9.86 x 10⁸ g
                           1 x 10⁻⁶ µg

(Step 2)

  9.86 x 10⁸ g                  1 mL
-----------------------  x  ----------------------  =  2.05 x 10¹² mL
                                   4.8 x 10⁻⁴ g

=  2,050,000,000,000 mL

In order to determine whether there is a significant difference between two samples, the Student's t-test examines their mean and standard deviation.

A significant t-score, also known as a t-value, denotes a difference between the groups, whereas a small t-score denotes similarity. Degrees of freedom are the values in a research that have the flexibility to change, and they are crucial for determining the significance and reliability of the null hypothesis.

This test is used when specimens from two distinct populations, species, or groupings are compared and analyzed. The independent T-test is another name for it.

learn more about  t-test

https://brainly.com/question/6589776

#SPJ1

Answer:

73,326 Pa

Explanation:

73,326 Pa

1.Surround the area with absorbent material, then cover the spill.

2.Scoop up the material and place it in a container.

3.Place the bagged waste in a hazardous waste disposal container.

4.Wipe down the area with a suitable cleaning agent

proper liquid spill cleanup procedures are essential to minimize the risk of harm to individuals and the environment. The steps involved in the cleanup process include surrounding the area with absorbent material, covering the spill, scooping up the material and placing it in a container, and disposing of the hazardous waste container in accordance with local regulations. It is also important to clean and disinfect the container used to collect the spilled material, inspect the area to ensure no hazardous materials remain, train personnel on proper spill cleanup procedures, conduct periodic spill cleanup drills, and update the facility's emergency response plan to include spill cleanup procedures. By following these steps, individuals can ensure that liquid spills are handled safely and effectively.

Learn more about absorbent here:

https://brainly.com/question/6838193

#SPJ4

When you increase the amount of carbon dioxide in the atmosphere, you also increase the amount of carbonic acid in the ocean.

Carbon dioxide is absorbed from the atmosphere into the ocean through a process called "oceanic uptake," which is facilitated by the exchange of gases at the air-sea interface.

As more carbon dioxide is emitted into the atmosphere, the concentration of carbon dioxide in the ocean increases, leading to a phenomenon called "ocean acidification".

Ocean acidification can have a number of negative impacts on marine organisms, including reduced growth rates and weakened shells or skeletons.

Thus, we can conclude this increases the amount of carbonic acid in ocean.

Learn more about increase in carbon dioxide here: https://brainly.com/question/28157529

#SPJ1

Answer:

88 gram is the answer in 2 significant digits

One mole of octane gives 9 moles of water. Then, 3.43 g or 0.03 moles of octane will give 0.27 moles of water that is 4.86 g of water can be produced.

Combustion is a type of chemical reaction in which a gas reacts with oxygen to give carbon dioxide and water.

The combustion reaction of octane is given as follows:

\(\rm C_{8}H_{18} + \frac{25}{2}O_{2} \rightarrow 8CO_{2} + 9 H_{2}O\)

As per this balanced chemical equation, one mole or 114 g of octane gives 9 moles of water.

no.of moles in 3.4 g of octane = 3.4 g/114 g = 0.03 moles.

no.of moles of water produced from 0.03 moles of octane :

= (0.03 × 9) = 0.27 moles.

Molar mass of water = 18 g/mol

then, mass of 0.27 moles = 0.27 × 18 =4.86 g.

Therefore, the maximum mass of water that could be produced here is 4.86 g.

Find more on combustion:

https://brainly.com/question/13153771

#SPJ2

Answer:

The pigment that causes leaves to be green is chlorophyll. ... As chlorophyll goes away, other pigments start to show their colors. This is why leaves turn yellow or red in fall. In fall, plants break down and reabsorb chlorophyll, letting the colors of other pigments show through.

Answer: The order of increasing energy is: radio < infrared < red < blue < UV < x rays

Explanation:

Electromagnetic wave is defined as the wave which is associated with both electrical and magnetic component associated with them.  

The electromagnetic radiations consist of gamma rays , X rays , Ultraviolet , Visible , Infra red , microwaves and radio waves arranged in order of decreasing frequency and increasing wavelengths. The visible region consists of violet , indigo , blue , green , yellow, orange and red lights in order of decreasing frequency or increasing wavelength

The relationship between energy  and frequency of the wave follows the equation:

\(E=h\times \nu\)

where,

\(\nu\) = frequency of the wave

E = energy of wave

From the above relation, it is visible that energy and frequency follow direct relation. For increase in value of frequency, energy increases and vice-versa.

Thus the order of increasing energy is: radio < infrared < red < blue < UV < x rays

I'm pretty sure it's 1.5 mph, but i'm not 100% sure

Answer:

0.5 m/s

Explanation:

x = 50 m

t = 100 s

v = x / t

v = 50 / 100

v = 0.5 m/s

There are 0.84 moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3.

To determine the number of moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3, we need to consider the stoichiometry of the compound.

The formula of aluminum sulfate (Al2(SO4)3) indicates that for every 1 mole of the compound, there are 2 moles of aluminum ions (Al3+). This means that the mole ratio of Al3+ to Al2(SO4)3 is 2:1.

Given that we have 0.42 mol of Al2(SO4)3, we can calculate the moles of Al3+ as follows:

Moles of Al3+ = 0.42 mol Al2(SO4)3 x (2 mol Al3+ / 1 mol Al2(SO4)3)

Moles of Al3+ = 0.42 mol Al2(SO4)3 x 2

Moles of Al3+ = 0.84 mol Al3+

Therefore, there are 0.84 moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3.

It's important to note that the stoichiometry of the compound determines the mole ratio between the different species involved in the chemical formula. In this case, the 2:1 ratio of Al3+ to Al2(SO4)3 allows us to determine the number of moles of Al3+ based on the given amount of Al2(SO4)3.

For more such question on aluminum visit:

https://brainly.com/question/30451292

#SPJ8

A structural formula is a graphical representation of a molecule that shows the arrangement of atoms

A structural formula is a graphical representation of a molecule that shows the arrangement of atoms in the molecule and how they are connected to each other. The structural formula typically uses lines to represent chemical bonds between atoms and shows the relative positions of the atoms in three-dimensional space.

The structural formula allows chemists to better understand the properties and behavior of a molecule based on its structure, such as its ability to form certain types of chemical bonds and participate in chemical reactions.

Learn more about structural formula:https://brainly.com/question/14611418

#SPJ1

Point B in the earthquake called epicentre and  point is C called fault and type of faulting are normal faulting are seen

The point within the earth along the rupturing geological fault where an earthquake originates is called the focus, or hypocenter and the point on the earth's surface directly above the focus is called the epicenter and earthquake waves begin to radiate out from the focus and subsequently form along the fault rupture and earthquake is caused by a sudden slip on a fault and the tectonic plates are always slowly moving, but they get stuck at their edges due to friction

Know more about earthquake

https://brainly.com/question/11628611

#SPJ1

The partial pressure of hydrogen in the collected gas sample is 733.0 mm Hg (calculated by subtracting the partial pressure of water, 17.0 mm Hg, from the total atmospheric pressure, 750.0 mm Hg).

When a gas is collected over water, the presence of water vapor affects the total pressure observed. In this case, the total atmospheric pressure is given as 750.0 mm Hg, and the partial pressure of water vapor at 19.5°C is 17.0 mm Hg.

To determine the partial pressure of hydrogen, we need to subtract the partial pressure of water vapor from the total atmospheric pressure. Partial pressure refers to the pressure exerted by an individual gas component in a mixture. In this scenario, the collected gas is primarily hydrogen, with water vapor being the other component.

By subtracting the partial pressure of water vapor (17.0 mm Hg) from the total atmospheric pressure (750.0 mm Hg), we can find the partial pressure of hydrogen:

Partial pressure of hydrogen = Total atmospheric pressure - Partial pressure of water vapor

Partial pressure of hydrogen = 750.0 mm Hg - 17.0 mm Hg

Partial pressure of hydrogen = 733.0 mm Hg

Therefore, the partial pressure of hydrogen in the collected gas sample is 733.0 mm Hg.

Know more about hydrogen here:

https://brainly.com/question/24433860

#SPJ8