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3 years ago

Does electricity flow from negative to positive right

2 answers:

5 0

I believe in an electric current electrons would flow from a (more so) negative terminal to a positive terminal. I might be wrong though, I'm not completely positive (ba dum tss) :D

kirill [66]3 years ago

4 0

Two types of charges are involved in electricity flow, these are positive charges and negative charges. The negative charges are called electrons and they are the ones that are responsible for electricity flow. The negative terminal of a battery for example has excess of electrons while the positive terminal lacks electrons. Thus, electricity flows by the movement of electrons from the negative terminal to the positive terminal.

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“Na2SO3” represents sodium sulfite.

Afina-wow [57]

Answer: (C) .There are four molecules of sodium sulfite.

Explanation:

$4Na_2SO_4$ means that there are four molecules of sodium sulfite.

Molecule is defined as a group of atoms bonded together. They are smallest unit of the substance which participates in a chemical reaction.

Atom is defined as smallest unit of matter which composed of electrons , protons and neutrons.

5 0

3 years ago

Read 2 more answers

If 65.39 g of zinc are mixed with some unknown mass of hydrochloride acid, 136.29 g of zncl2 are formed along with 2.00 g of hyd

zepelin [54]

How much hydrogen chloride acid was used?

72.916 g of hydrochloric acid was used.

Given:

Mass of Zn = 65.39 g

Mass of $ZnCl_{2}$ =136.29 g

Mass of $H_{2}$ = 2 g

Equation:

The chemical equation for the reaction of zinc with hydrochloric acid:

Zn + 2HCl → Zn $Cl_{2}$ + $H_{2}$

Hydrogen gas is created when zinc combines with hydrochloric acid, which causes the process to bubble ferociously. Another sign that a chemical reaction is taking place is the generation of a gas.

Calculation:

A number of equivalents equate:

Number of equivalents = $\frac{given mass}{Molecular Mass}$ x 1000 x equivalent factor

$\frac{x}{36.458}$ x 1000 x 1 = $\frac{136.29}{136.286}$ x 1000 x 2

$x$ = 36.458 x 2

$x$ = 72.916

Learn more about the calculation of mass here,

brainly.com/question/21290034

#SPJ4

4 0

2 years ago

State 3 differences between a solution, suspension and colloid.

Art [367]

Explanation:

solution 1) homogeneous

2) do not scatter light

3) cannot be separated by filtration

Colloids 1) heterogeneous

2) scatter light

3) cannot be separated by filtration

suspension 1) heterogeneous

2) may either scatter light or be opaque

3) can be separated by filtration

8 0

3 years ago

In nature, oxygen has three common isotopes. The atomic masses and relative abundances of these isotopes are given in the table

Vaselesa [24]

Answer: The average atomic mass of oxygen is 15.999 amu

Explanation:

Mass of isotope O-16 = 15.995 amu

% abundance of isotope O-16= 99.759 % = $\frac{99.759}{100}=0.99759$

Mass of isotope O-17 = 16.995 amu

% abundance of isotope O-17 = 0.037% = $\frac{0.037}{100}=0.00037$

Mass of isotope O-18 = 17.999 amu

% abundance of isotope O-18 = 0.204% = $\frac{0.204}{100}=0.00204$

Formula used for average atomic mass of an element :

$\text{ Average atomic mass of an element}=\sum(\text{atomic mass of an isotopes}\times {{\text { fractional abundance}})$

$A=\sum[(15.995\times 0.99759)+(16.995\times 0.00037)+(17.999 \times 0.00204)]$

$A=15.999$

Thus the average atomic mass of oxygen is 15.999 amu

5 0

3 years ago

What is the pH of the solution in which the [H+] is 1.0 × 10–4 mol/L ?

ddd [48]

PH is a simplified observation of the acidity of a solution, defined as the -log [H+] (negative logarithm of the hydrogen concentration).

-log[10^-4] = 4

The pH of this solution is 4.

5 0

3 years ago