All categories

4 years ago

Which of these statements regarding enzymes is FALSE?

Chemistry

2 answers:

larisa86 [58]4 years ago

8 0

I believe the answer is d

Rasek [7]4 years ago

5 0

Answer:

d. Enzymes are broken down by the reactions they catalyze.

Explanation:

You might be interested in

The radius of an atom of element X is 1.2x10m The radius of the centre of the atom is 1/10000 the radius of the atom Calculate t

Alika [10]

Answer:

$radius=1.2x10^{-3}m$

Explanation:

Hello,

Based on the given information, the radius is computed via:

$radius=1.2x10m*\frac{1}{10000}=1.2x10^{-3}m$

By assuming that the radius of the element is 1.2x10m, nevertheless, that is a pretty much big radius for an atom in meters, maybe a power is missing, but you can modify it by just including it in the aforesaid formula.

Best regards.

8 0

3 years ago

Calculate the number of moles in a 478.86 g sample of Cu(SO4).<br>Your answer

melamori03 [73]

To calculate this you need to interact a sulfate with the copper sulfate therefore when you get a copper sulfate reaction with the oxygen mask level it should create a dance dance revolution of the proxies equaling the new chemical in balance of peace birds hope this

7 0

3 years ago

20 POINTS!!!!

Y_Kistochka [10]

A. neutrons

Isotopes <span>contain equal numbers of protons but different numbers of neutrons in their nuclei.</span>

8 0

4 years ago

Sam records the mass of his evaporating dish as 6.251 g.

yanalaym [24]

0.309g

Explanation:

Mass of evaporating dish = 6.251g

Mass of evaporating dish and sample of hydrate = 16.864g

solving for mass of hydrate before heating;

Mass of hydrate =

mass of evaporating dish and sample of hydrate - mass of evaporating dish;

Mass of hydrate before heating = 16.864g - 6.251g = 10.613‬g

Upon heating ;

Mass of hydrate plus dish = 11.3g

Unknown:

number of moles of water removed from the hydrate = ?

We need to find the mass of water removed from the hydrate;

Mass of hydrate after heating =mass of hydrate plus dish after heating - mass of evaporating dish

mass of hydrate after heating = 11.3g - 6.251g = 5.049g

Mass of water lost = Mass of hydrate before heating - mass of hydrate after heating

= 10.613‬g - 5.049g

= 5.564g

Number of moles of water = $\frac{mass}{molar mass} = \frac{5.564}{18}$

number of moles of water = 0.309moles

learn more:

Number of moles brainly.com/question/13064292

#learnwithBrainly

5 0

3 years ago

Construct a three-step synthesis of 3-bromo-3-methyl-2-butanol from 2-methyl-2-butene by dragging the appropriate formulas into

juin [17]

Answer:

See explanation

Explanation:

In order to do this, we need to use 3 reagents to get the final product.

The first one, and logic is the halogenation of the alkene. Doing this, with Br2/CCl4, we'll get an alkane with two bromines, one in carbon 2 and the other in carbon 3.

Then, the next step is to eliminate one bromine of the reactant. The best way to do this, is using sodium ethoxide in ethanol. This is because sodium ethoxide is a relatively strong base, and it will promove the product of elimination in major proportions rather than the sustitution product. If we use NaOH is a really strong base, and it will form another product.

When the sodium ethoxide react, it will form a double bond between carbon 1 and 2 (The carbon where one bromine was with the methyl, changes priority and it's now carbon 3).

The final step, is now use acid medium, such H3O+/H2O or H2SO4/H2O. You can use any of them. This will form an carbocation in carbon 2 (it's a secondary carbocation, so it's more stable that in carbon 1), and then, the water molecule will add to this carbon to form the alcohol.

See the attached picture for the mechanism of this.

4 0

3 years ago