How would you make up 75 ml of a 45 mg/ml BSA solution?

Answer:

1.28 mol NaCl

Explanation:

Find the mass of NaCl by adding the two elements atomic mass

Na: 22.99

Cl: 35.45

22.99+35.45=58.44 g

Now convert to moles

74.8 g / 58.44 g = 1.27994524298 mol

Answer:

Na2S, it is the formula unit

Explanation:

The representative particle of CO2 is the molecule, while for Na2S, it is the formula unit

Answer:

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

Explanation:

Kinetic energy is the energy of movement or energy at work. An example is a ball rolling down a hill.

Potential energy is stored energy due to the position of an object. For example, a ball resting at the top of a hill.

The question incorrectly described potential energy as kinetic energy. Therefore, the answer is false.

Answer:

Explanation:

Ionization energy of hydrogen atom is 13.6 eV . This energy will be provided by energetic proton , the kinetic energy of which is 1000 eV.  The kinetic energy of ionized electron is 15.2 eV . Kinetic energy of proton produced from from the ionization of hydrogen or the nucleus of the hydrogen atom is 4.3 eV . All these energy must have come from kinetic energy of initial proton.

So kinetic energy of projectile proton after collision

= 1000 - ( 13.6 + 15.2 + 4.3 ) eV.

= 966.9 eV .

Answer:

A

Explanation:

Answer:

683838447745 anmmlllkkkkk

Answer:

Not exactly But you can take the slope of the curved portion and the slope of the flatline.

It wont do you much good since your working for absorbance but if you ever see something like a temperature change you can use the slope(s) to find freezing points/melting

Explanation:

If you need to submit a slope you could use a best fit which is just point to point or you could break it up like i mentioned

Answer:

1.31 × 10^47

Explanation:

1 mol of Fe =

[tex]1 \: mol \: of \ fe = 6.02 \times 10 ^{23} \ \\ x \: mol \: offe \: = 7.88 \times {10}^{24} \\ \\ \\ so \: 7.88 \times {10}^{24} \div 6.02 \times {10}^{23} \\ \\ x = 1.31 \times {10}^{47} [/tex]

Answer:

0.052 M.

Explanation:

Hello!

In this case, since the molarity is computed by dividing the moles of the solute by the volume of the solution in liters (M=n/V), we first need to compute the moles in 5.025 grams of NaOH as shown below:

[tex]n=5.025g*\frac{1mol}{40.0g}\\\\n=0.126mol[/tex]

In such a way, we compute the molarity as show below:

[tex]M=\frac{0.126mol}{2.4L}\\\\M=0.052M[/tex]

Best regards!

Answer:

C.) Sodium

Explanation:

Sodium is an "Alkali Metal"

Answer:

increase

Explanation:

Reactions that are initiated by light are called photochemical reactions. The brighter the light, the faster the reaction.

Answer: An increase in temperature typically increases the rate of reaction. An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision (Figure. 17.5 “Temperature and Reaction Rate”).

Explanation:

Answer:

no se ingles todavía no aprendo a hablar inglés ya si estuvieran en español los respondia

Answer:

Number of protons in Carbon - 14 atom [tex]6[/tex]

Explanation:

The atomic number of carbon 14 atom is [tex]14[/tex]

Number of neutrons in the nucleus of Carbon-14 atom [tex]= 8[/tex]

Atomic number is equal to the sum of neutrons and protons

Number of protons in Carbon - 14 atom [tex]= 14 -8 = 6[/tex]

Answer:

b potential hope this is right

Answer:

0.03 L

Explanation:

Step 1: Given data

Step 2: Calculate the final volume of the balloon

The balloon is filled with air. If we assume it behaves as an ideal gas, we can calculate the final volume of the balloon using Charles' law.

V₁/T₁ = V₂/T₂

V₂ = V₁ × T₂/T₁

V₂ = 0.5 L × 20 K/293 K = 0.03 L

Answer:

the same as

Explanation:

that's what makes the most since to me but i may be wrong

Answer:

0.370 M

Explanation:

Step 1: Given data

Molar concentration of the sodium carbonate solution: 0.185 M

Step 2: Write the balanced dissociation equation

Sodium carbonate is a strong electrolyte that dissociates according to the following equation.

Na₂CO₃(aq) ⇒ 2 Na⁺(aq) + CO₃²⁻(aq)

Step 3: Calculate the molar concentration of sodium ions

The molar ratio of Na₂CO₃ to Na⁺ is 1:2.

0.185 mol Na₂CO₃/L × 2 mol Na⁺/1 mol Na₂CO₃ = 0.370 mol Na⁺/L

Explanation:

your answer willing be 8.7

Answer: [tex]H_2[/tex] < [tex]CO[/tex] < [tex]O_2[/tex] < [tex]CO_2[/tex] < [tex]CL_2[/tex]

Explanation:

According to avogadro's law, 1 mole of every substanceweighs equal to its molecular mass and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.

To calculate the moles, we use the equation:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}[/tex]

1. Mass of [tex]H_2=moles\times {\text {Molar mass}}=0.50moles\times 2g/mol=1g[/tex]

2. Mass of [tex]O_2=moles\times {\text {Molar mass}}=0.50moles\times 32g/mol=16g[/tex]

3. Mass of [tex]Cl_2=moles\times {\text {Molar mass}}=0.50moles\times 71g/mol=35.5g[/tex]

4. Mass of [tex]CO_2=moles\times {\text {Molar mass}}=0.50moles\times 44g/mol=22g[/tex]

5. Mass of [tex]CO=moles\times {\text {Molar mass}}=0.50moles\times 28g/mol=14g[/tex]

Thus the flasks of gases in order of increasing grams of gas is:

[tex]H_2[/tex] < [tex]CO[/tex] < [tex]O_2[/tex] < [tex]CO_2[/tex] < [tex]CL_2[/tex]

Answer:

Answer:

Igneous rocks form from molten rock, and rarely have fossils in them. Metamorphic rocks have been put under great pressure, heated, squashed or stretched, and fossils do not usually survive these extreme conditions. Generally it is only sedimentary rocks that

Explanation:

Hope it helps, some how.

Your welcome :)

Answer:

Explanation:

mol = given mols / molar mass

given mass = 1.43 grams

molar mass = 233

mols = 1.43 / 233 = 0.00614

1 mol contains 6.02 * 10^23 particles

0.00614 moles = x                                  Cross multiply

1*x = 0.00614 * 6.02*10^23

x = 3,68 * 10^21 particles.

Answer:

There will be more light-colored wolves.

Explanation:

Evolution is based off the survival of those with the most advantages in the wild. Since their light coat gives them a survival advantage, they will reproduce more.

Answer:

[tex]\boxed{\bold { \large { \boxed {KE=\frac{1}{2} mv^2 \ , \ PE=mgh}}}}[/tex]

Explanation:

Kinetic energy formula

[tex]\displaystyle KE=\frac{1}{2} mv^2[/tex]

Potential energy formula

[tex]\displaystyle PE=mgh[/tex]

[tex]\displaystyle KE \Rightarrow \sf kinetic \ energy \ (J)[/tex]

[tex]\displaystyle PE \Rightarrow \sf potential \ energy \ (J)[/tex]

[tex]\displaystyle m \Rightarrow \sf mass \ (kg)[/tex]

[tex]\displaystyle v \Rightarrow \sf velocity \ (m/s)[/tex]

[tex]\displaystyle g \Rightarrow \sf acceleration \ of \ gravity\ (m/s^2)[/tex]

[tex]\displaystyle h \Rightarrow \sf height \ (m)[/tex]

Answer:When more gas particles enter a container, there is less space for the particles to spread out, and they become compressed. ... The particles exert more force on the interior volume of the container. This force is called pressure.

Explanation: