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4 years ago

I need ASAP! When particles are enclosed in a vesicle and released OUT of a cell, the process is called:

Chemistry

2 answers:

goblinko [34]4 years ago

5 0

Answer:D Diffusion

Explanation:

Because the the cell Is letting it go diffuse it to remove it.

Nimfa-mama [501]4 years ago

4 0

Exocytosis is what releases things out of the cell

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Why milk sours is chemical change ?

Dmitriy789 [7]

Answer:

Explanation:

So chemical changes require a change on a molecular level that cannot be reversed because they form some new substance. Souring milk is not something you can reverse, and the process of it souring produces new molecules.

8 0

3 years ago

Read 2 more answers

What is pH when 4.0 mL of 2.0 M barium hydroxide is added to 10.0 mL of 1.00 M nitric acid?

Anika [276]

Answer : The pH of the solution will be 13.63.

Solution:

Moles of hydroxide ions in barium hydroxide solution

$BaOH_2\rightarrow Ba^++2(OH)^-$

Number of moles = (concentration) $\times$ (volume in liters) ...(1)(1L=1000mL)

2.0 M barium hydroxide in solution

Number of moles of $Ba(OH)_2$ in 2.0 M solution $=2.0 M\times 0.004 L=0.008$ moles

If One mole of barium hydroxide gives two moles of hydroxide in solution then 0.008 moles will give:

Number of moles of $OH^-=(2)\times (0.008 mol)=0.016$ moles

Moles of $H^+$ ions in nitric acid

$HNO_3\rightarrow NO^{-}_{3}+H^+$

In 1.00 M nitric acid solution

Moles of nitric acid in 1.0 M solution $=(1.0 M)\times(0.010 L)=0.010$ moles

If one mole of nitric acid will give one moles of $H^+$ ion.

Then 0.010 moles of nitric acid in solution will give :

Number of moles of $H^+=(1)\times (0.010 mol)=0.010$ moles

Since , the reaction will be neutralization reaction, equal number of moles of $H^+$ will neutralize equal number of moles of $OH^-$

So,0.010 moles of $H^+$ will neutralize 0.010 moles of $OH^-$ in the solution

Remaining moles of $OH^-=0.016- 0.01=0.006$ moles

Concentration of $[OH^-]$ resulting solution

Resulting volume of the solution : 0.004 + 0.010 liters

Calculating $[OH^-]$ by using equation (1).

$[OH^-]=\frac{0.006}{0.004L+0.010 L}=0.4285 M$

$pOH=-log[OH^-]=-log(0.4285)=0.367$

$pH=14-pOH=14-0.367=13.633$

The pH of the solution will be 13.633.

8 0

4 years ago

Sandra pushed a wooden block and it slid across the floor. The wooden block gradually slowed down and stopped after moving 10 me

jarptica [38.1K]

Answer:

Because it lost momentum!

Explanation:

Hope this helps! Plz mark brainliest! :)

8 0

3 years ago

Read 2 more answers

Which statement best explains why a cell might shrivel?

zaharov [31]

Answer:

I think it is D

Explanation:

6 0

3 years ago

4. Calculate the concentration of NaCl in a solution prepared by diluting 2 mL of 0.05 M NaCl to a total volume of 10 mL with de

Shalnov [3]

Answer:

Molarity of NaCl = Molarity of sodium ions = Molarity of chloride ions = 0.01 M

Explanation:

Considering

$Molarity_{diluted\ solution}\times Volume_{diluted\ solution}=Molarity_{stock\ solution}\times Volume_{stock\ solution}$

Given that:

$Molarity_{diluted\ solution}=?$

$Volume_{diluted\ solution}=10\ mL$

$Volume_{stock\ solution}=2\ mL$

$Molarity_{stock\ solution}=0.05\ M$

So,

$Molarity_{diluted\ solution}\times 10\ mL=0.05\ M\times 2\ mL$

$Molarity_{diluted\ solution}=0.01\ M$

Molarity of NaCl = Molarity of sodium ions = Molarity of chloride ions = 0.01 M

4 0

4 years ago