Which is not a desirable aspect of titanium as a material:______
a. good corrosion resistance in salt water
b. high specific strength
c. easy manufacturing in open air environments
d. high yield strength

Answer:

no

Explanation:

because the characters are invalid

Answer:

no

Explanation:

because they are not valid

Answer:

b. 2-4

Explanation:

Look at the slope of the line, between 0-2 and 4-6 the slope is only 10, but between 2-4 the slope is 20, so that's when the temperature is changing the fastest. In the same time it took for the water to increase by 20 degrees between 0-2 and 4-6, the temperature of the water increased by 40 degrees between 2-4 so that's when the change is the fastest.

Sarah discovered that the proportion of O2 in the ocean differs based on the water temperature. Some parts of the ocean have more dissolved O2, while other parts have less.

Sarah recently learned that the proportion of O2 found in the ocean differs based on the water temperature. Specifically, she found out that parts of the ocean have a higher quantity of dissolved O2, while other parts have a lesser quantity of it. This means that the amount of O2 present in the ocean can vary depending on the temperature of the water.

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Answer:

To convert m/sec into mi/hr, multiply the number by 2.236936 and then round off the answer to the required decimal places.

2500 ×2.236936

= 5592.34 mi/hr

Explanation:

Cr=35.880/51=0.73≈0.7

P=21.076/31=0.67≈0.7

O=43.543/16=2.71

Divide each by 0.7 u get

Cr=1 ,P =1, O=4

Empirical formula is CrPO4

Answer:

The atomic number is written on top of the element symbol.

Explanation:

From top to bottom:

-Atomic Number

-Element Symbol

-Name

-Atomic Mass

~

Elastic modulus is a measure of a material’s ability to resist deformation under an applied load.

Here, correct answer will be

Generally, materials with higher elastic modulus are stiffer and stronger than those with a lower elastic modulus. The two most common materials with high elastic modulus are steel and carbon fiber composites.

Steel has an elastic modulus of approximately 200 GPa, and carbon fiber composites can range up to around 450 GPa. As a result, steel and carbon fiber composites are often used in applications where strength and stiffness are important.

For example, steel is commonly used in structural applications such as bridges and buildings, while carbon fiber composites are used in aircraft, sailing boats, and automotive parts. In comparison, other materials such as aluminum and plastics have a much lower elastic modulus, making them more suitable for applications where high strength and stiffness are not required.

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Answer:

\(MgO _{(s)} + 2H {}^{ + } _{(aq)} = Mg {}^{2 + } _{(aq)}+ H _{2} O _{(l)} \\ \)

Measuring tool would you use to measure the area of a football field is used a tender wheel

If you need to measure much longer lengths for example the length of a football pitch then you could use a trundle wheel then you use it by pushing the wheel along the ground and it clicks every time it measures one meter and to measure the football field area then

Area = length×breadth

Area = 90m×45m

Area = 4.05m²

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Answer:

In the picture A kettle is boiling water and evaporating it we can see the water vapours coming out of the kettle and there is a paper on top of the kettle from where the water vapours are coming out .

Explanation:

is this right ?? i hope it helps

Answer:

resend again that question dear

Answer:

The mass of NaCl needed for the reaction is 91.61 g

We'll begin by calculating the number of mole of F₂ that reacted.

Volume (V) = 12 L

Temperature (T) = 280 K

Pressure (P) = 1.5 atm

Gas constant (R) = 0.0821 atm.L/Kmol

Number of mole (n) =?

PV = nRT

1.5 × 12 = n × 0.0821 × 280

18 = n × 22.988

Divide both side by 22.988

n = 18 / 22.988

n = 0.783 mole

Next, we shall determine the mole of NaCl needed for the reaction.

F₂ + 2NaCl —> Cl₂ + 2NaF

From the balanced equation above,

1 mole of F₂ reacted with 2 moles of NaCl.

Therefore,

0.783 mole F₂ will react with = 0.783 × 2 = 1.566 moles of NaCl.

Finally, we shall determine the mass of 1.566 moles of NaCl.

Mole = 1.566 moles

Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol

Mass of NaCl =?

Mass = mole × molar mass

Mass of NaCl = 1.566 × 58.5

Mass of NaCl = 91.61 g

Therefore, the mass of NaCl needed for the reaction is 91.61 g

Explanation:

In the group that is obtained by adding or deleting from each of the following groups, the indicated symmetry operation is c3 plus i. The correct option is a.

In organic chemistry, the shape of the compounds that are formed is made or discovered. The shape of water molecules, benzene, etc. These structures of symmetries are sent by the connecting or joining of elements with bonds.

Citroën C3 is an organic compound that gives symmetry operation when a group or added or deleted from the compound.

Thus, the correct option is a. c3 plus i.

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Answer:

No. 1 Susan was Frantic

No.2 panicked

No.3 determined

No.4 Despair

No.5 Releif

I really hope this helps, Good luck! :D

NICE its did not work at all

The types of batteries that can be recharged are:

c) nickel-cadmium (Ni-Cad) batteries

Nickel-cadmium (Ni-Cad) batteries are rechargeable batteries that can undergo a reversible electrochemical reaction. They can be recharged by applying an external electrical current, which drives the reaction in the opposite direction, converting the discharged state back into a charged state.

The other options listed are not typically rechargeable:

a) alkaline dry cells: Alkaline batteries are non-rechargeable and designed for single-use applications.

b) zinc chloride batteries: Zinc chloride batteries are also non-rechargeable and meant for single-use.

d) mercury button batteries: Mercury button batteries are typically non-rechargeable and designed for single-use. Moreover, the use of mercury in batteries has been phased out due to environmental concerns.

Therefore, the correct answer is:

c) nickel-cadmium (Ni-Cad) batteries.

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Answer:

it s not on periodic table this is not real element

Explanation:

Answer:

reflection

Explanation:

wave reflection is when a sound bounces off something it cannot go through, like echoing

Answer:

Logan could explain the lower mass by explaining that the reaction between hydrochloric acid and magnesium produces hydrogen gas, which escapes and therefore is not included in the final combined mass measurement. The reaction is:HCl + Mg → MgCl2 + H2Since the hydrogen gas has mass, its escape from the reaction vessel explains the decrease in the combined mass of the reactants after the reaction.

Answer: 19.8 seconds

Explanation:

you're welcome:) <3 plz lmk if i'm wrong

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:

\(\frac{V}{T} =k\)

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

\(\frac{V1}{T1} =\frac{V2}{T2}\)

In this case:

Replacing:

\(\frac{33.9 L}{285.4 K} =\frac{45.7 L}{T2}\)

Solving:

\(T2=45.7 L*\frac{285.4 K}{33.9 L}\)

T2= 384.7 K

The temperature will be 384.7 K

Answer:

Cells are extremely small.

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The energy required to initiate an exergonic reaction is called

E) the energy of activation.

The energy required to initiate an exergonic reaction is called the energy of activation, also known as the activation energy. Activation energy is the minimum amount of energy needed for a chemical reaction to start and proceed. It represents the energy barrier that must be overcome for reactant molecules to reach a transition state from which the reaction can occur.

In an exergonic reaction, the overall energy change is negative, meaning that energy is released. However, even in exergonic reactions, there is still an initial energy input required to break the existing bonds and initiate the reaction. This energy of activation is necessary to initiate the rearrangement of atoms and formation of new bonds that lead to the products of the reaction.

The energy of activation is important because it influences the rate at which a reaction occurs. Higher activation energies typically result in slower reaction rates, while lower activation energies facilitate faster reactions. Catalysts are substances that can lower the energy of activation and increase the rate of a reaction by providing an alternative reaction pathway with lower energy requirements.

Therefore, option E) the energy of activation accurately describes the energy required to initiate an exergonic reaction.

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Answer:

brain

Explanation:

The central nervous system (CNS) controls most functions of the body and mind. It consists of two parts: the brain and the spinal cord. The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement.

Answer:

OC brain, due to the brain being basically the smarts of your body, combined with it also managing, important functions of the body

Explanation:

The percent by mass of acetic acid in the vinegar is 2.33%.

Below are the steps to solve the given problem using the data table given below:

Step 1: Calculate the mass of the vinegar. Given,Mass of flask and vinegar solution- 25.17gMass of flask- 15.12gMass of vinegar solution = Mass of flask and vinegar solution - Mass of flask= 25.17 g - 15.12 g= 10.05 g

Step 2: Calculate the moles of NaOH used in the titration.Molarity of NaOH solution is 0.1 M.Moles of NaOH = Molarity × Volume of NaOH usedMoles of NaOH = 0.1 M × 39.00 mL (since the initial volume of NaOH is 0.00 mL)Moles of NaOH = 0.0039 moles

Step 3: Determine the moles of acetic acid used in the reaction.The balanced chemical equation for the reaction between NaOH and acetic acid (the main component of vinegar) is given below:CH3COOH + NaOH → CH3COONa + H2OMoles of NaOH = Moles of CH3COOH (since they react in a 1:1 ratio)Moles of CH3COOH = 0.0039 moles

Step 4: Calculate the mass of acetic acid used in the reaction.Molar mass of acetic acid is 60.05 g/mol.Mass of CH3COOH = Moles of CH3COOH × Molar mass of CH3COOH= 0.0039 moles × 60.05 g/mol= 0.234 gStep 5: Calculate the percent by mass of acetic acid in the vinegar.Percent by mass of acetic acid = (Mass of CH3COOH / Mass of vinegar solution) × 100%= (0.234 g / 10.05 g) × 100%= 2.33%.

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At the end of the experiment you will be assessing the purity of your aspirin by measuring its absorbance at 525 nm. If the absorbance measurement is found to be 0. 040 then the % salicylic acid impurity in your aspirin will be 7.8 percent.

The sample solution's absorbance (A), as specified in the question, is 1.07. Beer's law is applied to determine the aspirin concentration, which is A = ebc.

Here, e is the extinction coefficient, which, according to the standard value for salicylic acid, is equal to 139.322 M-1cm-1, and b is the path length, which is equal to 1 cm. Now that we have our values,

A = ebc

c = A / (eb)

c = 1.07 / (139.322 × 1)

c = 0.00768 M

It is now necessary to compare the value of concentration determined with the concentration of aspirin previously given in order to calculate the percent salicylic acid in the sample.

Aspirin's initial concentration, which is specified in the query, is 0.02 grammes. Aspirin has a molar mass of 240 g/mol.

Consequently, the aspirin molecules will be,

0.02 / 240 = 8.33 × 10^-5 moles  

The final volume of the diluted solution given is 10 ml or 0.01 liters.  

The molarity of aspirin in the diluted solution will be,  

c1 = 8.33 × 10^-5 / 0.01 = 8.33 × 10^-3 M or 0.00833 M

Now, the percent of salicylic acid in the product will be,  

c1 - c / c1 × 100

(0.00833 - 0.00768) / 0.00833 × 100 = 7.8 %

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When performing experiments to measure the kcat of an enzyme, the substrate concentration should be saturating. This means that the substrate concentration should be higher than the KM value, which is the substrate concentration at which the enzyme reaction rate is half of its maximum rate.

At saturating substrate concentrations, the enzyme active sites are fully occupied, allowing for the maximum possible reaction rate (kcat) to be measured. If the substrate concentration is too low, the enzyme will not be working at its maximum rate and kcat cannot be accurately measured.

Therefore, a saturating substrate concentration is necessary to measure kcat accurately.

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