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4 years ago

Function of beta-galactosidase side is to

Chemistry

2 answers:

Yuliya22 [10]4 years ago

6 0

The answer is, C. break down lactose

Ksju [112]4 years ago

5 0

Hi,
β-galactosidase is important for organisms as it is a key provider in the production of energy and a source of carbons through the break down of lactose to galactose and glucose.

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Which is more concentrated with respect to sodium ions, 50.0 g of NaCl dissolved in 500.0 mL of solution or 59.0 g of Na2SO4 in

Dmitry_Shevchenko [17]

Answer:

b) The NaCl solution described

Explanation:

First we calculate the number of moles for each compound:

moles = mass / molecular weight

moles of NaCl = 50 / 58.5 = 0.854 moles

moles of Na₂SO₄ = 59 / 142 = 0.415 moles

In the first solution we have:

0.854 moles of NaCl which means that 0.854 moles of sodium Na⁺ ions are dissolved in 500 mL of solution

In the second solution we have:

0.415 moles of Na₂SO₄ which means that 0.843 moles of sodium Na⁺ ions are dissolved in 500 mL of solution

Now we may conclude that the NaCl is more concentrated than the Na₂SO₄ solution.

7 0

4 years ago

What are the basic needs of all cells in the body? thank you please help. :)

UNO [17]

The basic needs of the cells is to keep your body running and healthy and active

5 0

3 years ago

Pls help i will mark brainlist

Veseljchak [2.6K]

58.5 moles

can i plz get brainliest

4 0

3 years ago

Reaction Rates

inn [45]

Answer:

PART A 1st order in A and 0th order in B

Part B The reaction rate increases

Explanation:

PART A

The rate law of the arbitrary chemical reaction is given by

$-r_A=k\times\left[A\right]^\alpha\times\left[B\right]^\beta\bigm$

Replacing for the data

Expression 1 $0.00639=k\times{0.12}^\alpha\times{0.22}^\beta$

Expression 2 $0.01280=k\times{0.24}^\alpha\times{0.22}^\beta$

Expression 3 $0.00639=k\times{0.12}^\alpha\times{0.11}^\beta$

Making the quotient between the fist two expressions

$\frac{0.00639}{0.01280}=\left(\frac{0.12}{0.24}\right)^\alpha$

Then the expression for $\alpha$

$\alpha=\frac{ln\frac{0.00639}{0.01280}}{ln\frac{0.12}{0.24}}=1\bigm$

Doing the same between the expressions 1 and 3

$\frac{0.00639}{0.00639}=\left(\frac{0.22}{0.11}\right)^\beta$

Then

$\beta=\frac{ln\frac{0.00639}{0.00639}}{ln\frac{0.22}{0.11}}=0\bigm$

This means that the reaction is 1st order respect to A and 0th order respect to B .

PART B

By the molecular kinetics theory, if an increment in the temperature occurs, the molecules will have greater kinetic energy and, consequently, will move faster. Thus, the possibility of colliding with another molecule increases. These collisions are necessary for the reaction. Therefore, an increase in temperature necessarily produces an increase in the reaction rate.

4 0

3 years ago

The validity of documents was marked by fingerprinting in what time period?

Len [333]

Answer before the 1800s

Explanation:

7 0

3 years ago