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3 years ago

Diffusion is a type of active transport

Chemistry

1 answer:

Rudiy273 years ago

4 0

Answer:

True

Explanation:

Diffusion is an active process that requires a cell to expand a great deal of energy. ... Diffusion through ion channels is a form of active transport. False. Passive transport uses ATP to move molecules against their concentration gradient.

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How many molecules of sugar are there in 1 can of soda?

Korvikt [17]

Answer:

$5.8\cdot 10^{22}$

Explanation:

Since no information was provided about the can of soda, let's take an example of 1 can of 12 fl oz (368 g) Coca-Cola.

The nutrition facts state that it contains 33 g of sugar. In order to calculate the number of molecules, we firstly need to know the molecular formula of sugar. Sugar can be represented by $C_{12}H_{22}O_{11}$ .

Our first step is to find the molar mass of sugar:

$M_{C_{12}H_{22}O_{11}} = 342.3 g/mol$

Secondly, dividing mass of sugar, $m = 33 g$ , by the molar mass will yield the number of moles of sugar:

$n_{C_{12}H_{22}O_{11}}=\frac{m}{M}$

Finally, multiplying moles by the Avogadro's constant will yield the number of molecules:

$N_{C_{12}H_{22}O_{11}}=n_{C_{12}H_{22}O_{11}}\cdot N_A =\frac{m}{M} \cdot N_A = \frac{33 g}{342.3 g/mol} \cdot 6.022 \cdot 10^{23} mol^{-1} = 5.8\cdot 10^{22}$

8 0

4 years ago

SnSe2 GaAs Pb(SO4)2 Be(HCO3)2 Mn2(SO3)3 Al(CN) i need to find their names

Mekhanik [1.2K]

Answer:

Explanation:

SnSe2 = Tin (IV) selenide

GaAs = Gallium arsenide

Pb(SO4)2 = Lead(II) sulfate

Be(HCO3)2 =Beryllium Bicarbonate.

Mn2(SO3)3 = Manganese(III) Sulfite.

Al(CN)3 =Aluminum Cyanide

hope it helps :)

5 0

3 years ago

Why is calcuim (ca) in group 2. period 4 on the periodic table

larisa86 [58]

Answer:

Calcium (Ca) is in group 2 and period 4 on the periodic table be because Calcium has 2 valence electrons and 4 electron shell. Thus, calcium is a metal like all other group 2 element.

Explanation:

4 0

3 years ago

Is LiNO2 and element or compound

Vladimir79 [104]

The correct answer is compound

4 0

3 years ago

Of the groups given, which are the least chemically reactive?

AfilCa [17]

Answer:

Group 8A

Explanation:

This is because the elements in Group 8A is stable, what I mean is this elements have the maximum number of electrons in there last orbit so they dont need to form any compund with any other element in the periodic table.

HOPE THIS WILL HELP YOU❤️

7 0

3 years ago