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emmasim [6.3K]
4 years ago
12

Which substances pass through a leaf's stomata?

Chemistry
2 answers:
Vilka [71]4 years ago
7 0
Carbon dioxide pass through a leaf stomata.
Orlov [11]4 years ago
6 0

Oxygen can pass through the leafs stomata

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If 18.7ml of 0.01500M aqueous HCl is required to titrâtes 15.00ml of an aqueous solution of NaOH to the equivalence point, what
sweet [91]

Answer:

0.0187 M

Explanation:

Step 1: Write the balanced neutralization reaction

NaOH + HCl ⇒ NaCl + H₂O

Step 2: Calculate the reacting moles of HCl

18.7 mL of 0.01500 M HCl react.

0.0187 L × 0.01500 mol/L = 2.81 × 10⁻⁴ mol

Step 3: Calculate the reacting moles of NaOH

The molar ratio of HCl to NaOH is 1:1. The reacting moles of NaOH are 1/1 × 2.81 × 10⁻⁴ mol = 2.81 × 10⁻⁴ mol.

Step 4: Calculate the molarity of NaOH

2.81 × 10⁻⁴ moles are in 15.00 mL of NaOH.

[NaOH] = 2.81 × 10⁻⁴ mol/0.01500 L = 0.0187 M

6 0
3 years ago
EASY!!!!! ILL MARK BRAINLIEST!!!!!!!!<br> why does measured current differ from calculated current
sergey [27]

Answer:

No component is perfect. All have tolerances that can vary. If you construct a simple circuit where a 10 volt power supply feeds a 10 ohm resistor, you would expect to measure a current of one ampere. BUT - the wiring has some resistance too. This adds perhaps 0.1 ohms to the circuit. The resistor has a +-5% tolerance. If it is 5% high, it may measure 10.5 ohms. That's a total circuit resistance of 10.6 ohms. The power supply may have a tolerance of +-1%. Suppose it's 1% low. That's an output of 9.9 volts in real life. So you have 9.9 volts dropped across 10.6 ohms. you will measure closer to 0.934 amps instead of 1.000 amps. To make matters worse, most electronic components have a temperature coefficient, that is, their values change with different temperatures. You may get a completely different reading tomorrow if the temperature is different! Finally, with current measurements in particular, you are inserting the ammeter in series with the circuit under test. Ammeters have some inherent resistance too, so by putting the ammeter in the circuit, you are changing the very current you are trying to measure (a little)! Oh yeah, the ammeter has a tolerance too. Its reading may be off a little even if everything else is perfect. Sometimes you have to wonder how we get a decent reading at all. Fortunately the errors are usually fairly small, and not all tolerances are off in the same direction or off the maximum amount. They tend to cancel each other out somewhat. BUT - in rare circumstances everything CAN happen like I said, and the error can be huge.

Explanation:

8 0
3 years ago
How many milliliters of 5.50 m hcl(aq) are required to react with 9.55 g of zn(s)?
Ganezh [65]
Zn(s) + 2HCl(aq) --> ZnCl2(aq) + H2(g)  From the balanced chemical equation, 2 moles of HCl is required to react with 1 mole of Zn   Mass of Zn = 9.55 g  Molar mass of Zinc = 65.41 g/mol   Number of moles = mass / molar mass   Moles of Zn = 9.55 / 65.41   = 0.146 mol  Moles of HCl required = 2 x moles of Zn   = 2 x 0.146   = 0.292 mol
6 0
3 years ago
A white powder is poured into a glass of water and shaken. If the powder remains visible and can be filtered out, the mixture is
Sedbober [7]
<span>in an electrolyte solution</span>
3 0
4 years ago
I need to know the answer to that
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im not sure which one to answer, and i can hardly see the text.

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