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3 years ago

Help out 1 and 2, Will mark brainliest !!

Chemistry

1 answer:

Elan Coil [88]3 years ago

6 0

1.) the answer would be 316800 inches
2.)the answer would be 15778463 seconds

How:
Google (*´∀｀*)

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One theory that has been proposed about the information of the universe.

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The big bang theory is one of the multipl about the universe

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3 years ago

Read 2 more answers

What mass of a 4.00 % NaOH solution by mass contains 15.0 g of NaOH?

fenix001 [56]

Answer:

375 g

Explanation:

Let the total mass of the solution = x g

Given that the mass of NaOH in the solution = 15.0 g

Thus, mass of the solvent = x - 15.0 g

Given that the mass % of the solution = 4 %

So,

$Mass\ percent=\frac {Mass\ of\ the\ solute}{Mass\ of\ the\ solution}\times 100$

So,

$4=\frac {15.0}{Mass\ of\ the\ solution}\times 100$

<u>Mass of the solution = 375 g</u>

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4 years ago

The substance that does the dissolving in the mixture solution<br> is called the

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Answer: Solute

Explanation:

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4 years ago

What is an investigation which all conditions are controlled

marshall27 [118]

It is a controlled experiment

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3 years ago

At what substrate concentration would an enzyme with a K_cat of 30.0 s⁻¹ and a Km of 0.0050 M operate at one-quarter of its maxi

Umnica [9.8K]

Answer:

The correct answer is option B.

Explanation:

Michaelis–Menten 's equation:

$v=V_{max}\times \frac{[S]}{(K_m+[S])}=k_{cat}[E_o]\times \frac{[S]}{(K_m+[S])}$

$V_{max}=k_{cat}[E_o]$

v = rate of formation of products

[S] = Concatenation of substrate = ?

$[K_m]$ = Michaelis constant

$V_{max}$ = Maximum rate achieved

$k_{cat}$ = Catalytic rate of the system

$E_o$ = initial concentration of enzyme

We have :

$v=\frac{V_{max}}{4}$

[S] =?

$K_m=0.0050 M$

$v=V_{max}\times \frac{[S]}{(K_m+[S])}$

$\frac{V_{max}}{4}=V_{max}\times \frac{[S]}{(0.0050 M+[S])}$

$[S]=\frac{0.005 M}{3}=1.7\times 10^{-3} M$

So, the correct answer is option B.

8 0

3 years ago