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1 year ago

11

The small intestine shown below contains lymphatic vessels but no capillaries. Which nutrient will be absorbed by this small int

estine?
A-Simple carbohydrates
B- Amino acids
C-Fatty acids
D-All of the above

2 answers:

Bumek [7]1 year ago

8 0

Answer:

fatty acids

Explanation:

masya89 [10]1 year ago

6 0

Answer:

D

Explanation:

D is the answer

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How many grams of KClO3 are needed to produce of 4.26 moles of O2? 2 KClO3 2 KCl + 3 O2 a. 348 g b. 136 g c. 174 g d. 522 g e. 7

JulsSmile [24]

Ok so this is what we know :

2KClO3 -> 2KCl + 3O2 (Always check if equation is balanced - in this case it is)
4.26moles
So we know that we have 4.26 moles of oxygen (O2). Now lets look at the ratio between KClO3 and O2.
We see that the ratio is 2:3 meaning that we need 2KClO3 in order to produce 3O2.
Therefore divide 4.26 by 3 and then multiply by 2.
4.26/3 = 1.42
1.42 * 2 = 2.84
Now we know that the molarity of KClO3 is 2.84 moles.
Multiply by R.M.M to find how many grams of KClO3 we have.

R.M.M of KClO3
K- 39
Cl- 35.5
3O- 3 * 16 -> 48
---------------------------
<span>122.5
</span>2.84 * 122.5 = 347.9 grams therefore the answer is (a)
348 grams needed of KClO3 to produce 4.26 moles of O2.
Hope this helps :).

8 0

2 years ago

Read 2 more answers

Consider a beaker of water sitting on the pan of an electronic scale that has been tared. A metal weight hanging from a string i

natka813 [3]

Answer:

See explanation below for answers

Explanation:

We know that the balance is tared, so the innitial weight would be zero. Now, let's answer this by parts.

a) mass of displaced water.

In this case all we need to do is to substract the 0.70 with the 0.13 g. so:

mW = 0.70 - 0.13

mW = 0.57 g of water

b) Volume of water.

In this case, we have the density of water, so we use the formula for density and solve for volume:

d = m/V

V = m/d

Replacing:

Vw = 0.57/0.9982

Vw = 0.5710 mL of water

c) volume of the metal weight

In this case the volume would be the volume displaced of water, which would be 0.5710 mL

d) the mass of the metal weight.

In this case, it would be the mass when the metal weight hits the bottom which is 0.70 g

e) density.

using the above formula of density we calculate the density of the metal

d = 0.70 / 0.5710

d = 1.2259 g/mL

4 0

2 years ago

scoray [572]

The correct answer is Hot water increases the collision rate of molecules, causing the reaction to occur faster.

Explanation:

Temperature is directly related to the kinetic energy or movement of molecules in a substance. In this context, a higher temperature leads to more kinetic energy or more collision between molecules. At the same time, a chemical reaction involves molecules of two or more substances colliding and creating bonds to form new substances. This implies an increase in temperature means molecules colliding faster, new substances forming in a shorter time, and therefore a faster chemical reaction. According to this, the first answer is correct.

5 0

2 years ago

A 20.6-L sample of "pure" air is collected in Greenland at a temperature of 220.0°C and a pressure of 1.01 atm and is forced int

KATRIN_1 [288]

Answer :

(a) The pressure inside the bottle just after it filled is 19.8 atm.

(b) The pressure inside the bottle as it opened in the 21.0°C is 11.8 atm.

Explanation :

<u>Part (a) :</u>

Boyle's Law : It is defined as the pressure of the gas is inversely proportional to the volume of the gas at constant temperature and number of moles.

$P\propto \frac{1}{V}$

or,

$P_1V_1=P_2V_2$

where,

$P_1$ = initial pressure of gas = 1.01 atm

$P_2$ = final pressure of gas = ?

$V_1$ = initial volume of gas = 20.6 L

$V_2$ = final volume of gas = 1.05 L

Now put all the given values in the above equation, we get:

$1.01atm\times 20.6L=P_2\times 1.05L$

$P_2=19.8atm$

Therefore, the pressure inside the bottle just after it filled is 19.8 atm.

<u>Part (b) :</u>

Gay-Lussac's Law : It is defined as the pressure of the gas is directly proportional to the temperature of the gas at constant volume and number of moles.

$P\propto T$

or,

$\frac{P_1}{T_1}=\frac{P_2}{T_2}$

where,

$P_1$ = initial pressure of gas = 19.8 atm

$P_2$ = final pressure of gas = ?

$T_1$ = initial temperature of gas = $220.0^oC=273+220.0=493.0K$

$T_2$ = final temperature of gas = $21.0^oC=273+21.0=294.0K$

Now put all the given values in the above equation, we get:

$\frac{19.8atm}{493.0K}=\frac{P_2}{294.0K}$

$P_2=11.8atm$

Therefore, the pressure inside the bottle as it opened in the 21.0°C is 11.8 atm.

7 0

1 year ago

You evaporate all of the water from 100 mL of NaCl solution and obtain 11.3 grams of NaCl. What was the molarity of the NaCl sol

kicyunya [14]

Answer:

Molarity = 1.93 mol.L⁻¹

Explanation:

Molarity is the unit of concentration used to specify the amount of solute in given amount of solution. It is expressed as,

Molarity = Moles / Volume of Solution ----- (1)

Data Given;

Mass = 11.3 g

Volume = 100 mL = 0.10 L

First calculate Moles for given mass as,

Moles = Mass / M.mass

Moles = 11.3 g / 58.44 g.mol⁻¹

Moles = 0.1933 mol

Now, putting value of Moles and Volume in eq. 1,

Molarity = 0.1933 mol ÷ 0.10 L

Molarity = 1.93 mol.L⁻¹

3 0

2 years ago