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3 years ago

In which direction does water move across membranes, up or down the concentration gradient?

Chemistry

1 answer:

Wewaii [24]3 years ago

5 0

Answer:

If a membrane is permeable to water, though not to a solute, water will equalize its own concentration by diffusing to the side of lower water concentration

Explanation:

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The following list contains some common radicals. Using the charges on these ions and the idea of valence, predict the formulas

lesantik [10]

Answer : The formula for the compound sodium carbonate is $Na_2CO_3$

The formula for the compound potassium permanganate is $KMnO_4$

Explanation :

For formation of a neutral ionic compound, the charges on cation and anion must be balanced.

The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non-metals.

(a) Sodium carbonate

In the compound, the sodium metal forms an ionic compound with polyatomic anion (carbonate) $CO_3^{2-}$ .

Here, sodium is having an oxidation state of +1 called as $Na^{1+}$ cation and carbonate $CO_3^{2-}$ is an anion with oxidation state of -2. The charges are not balanced. So, the charges are balanced by the cris-cross method. Thus, the compound formed will be, $Na_2CO_3$

Hence, the formula for the compound sodium carbonate is $Na_2CO_3$

(b) Potassium permanganate

In the compound, the potassium metal forms an ionic compound with polyatomic anion (permanganate) $MnO_4^{1-}$ .

Here, potassium is having an oxidation state of +1 called as $K^{1+}$ cation and permanganate $MnO_4^{1-}$ is an anion with oxidation state of -1. The charges are balanced. Thus, the compound formed will be, $KMnO_4$

Hence, the formula for the compound potassium permanganate is $KMnO_4$

3 0

3 years ago

Contrast the structure of table salt and table sugar

nydimaria [60]

Table salt = ionically bonded molecule, sodium transfers one valence electron to chloride, NaCl

Table sugar = covalently bonded molecule

Sorry, that’s all I know.

4 0

4 years ago

Which graph BEST represents the motion of an airplane flying with equal amounts of thrust and air resistance?

iris [78.8K]

We gotta see the graph bud

7 0

4 years ago

Read 2 more answers

What if benzene sulphonyl chloride react with tertiary amine???? Name this reagent???

aniked [119]

Explanation:

<h3>Hinsberg reagent is an alternative name for benzene sulfonyl chloride. This name is given for its use in the Hinsberg test for the detection and distinction of primary, secondary, and tertiary amines in a given sample. This reagent is an organosulfur compound.</h3>

6 0

3 years ago

Name and define the quantity represented by H

Evgesh-ka [11]

Answer:

Molar enthalpy change, the enthalpy change for one mole of a pure substance

Explanation: i think

4 0

3 years ago