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4 years ago

What happens to the electricity as it flows through the closed circuit?

Chemistry

1 answer:

Igoryamba4 years ago

4 0

Answer:

Charges flow through a closed path called a circuit. Current flows because negatively charged particles are attracted to positively charged particles at the other end of the circuit.

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Which indicator most likely suggests that a chemical change is taking place?

Nezavi [6.7K]

Chemical change is most often indicated by a change in color.

5 0

4 years ago

Read 2 more answers

Compare 1 mole of H2, 1 mole of O2 and 1 mole of F2

likoan [24]

Explanation:

(a) As per the mole concept, one mole of any atom contains $6.022 \times 10^{23}$ atoms or molecules, that is, Avogadro's number of atoms.

Therefore, 1 mole of $H_{2}$ = $2 \times 6.022 \times 10^{23}$ molecules

= $1.2044 \times 10^{23}$ molecules

1 mole of $O_{2}$ = $2 \times 6.022 \times 10^{23}$ molecules

= $1.2044 \times 10^{23}$ molecules

1 mole of $F_{2}$ = $2 \times 6.022 \times 10^{23}$ molecules

= $1.2044 \times 10^{23}$ molecules

Hence, there are equal number of molecules present in the given atoms.

(b) Mass of each given atom will be calculated as follows.

Mass = no. of moles × molar mass

As one molecule of $H_{2}$ contains 2 atoms of hydrogen.

So, mass of 1 mole of $H_{2}$ = $2 mol \times 1.008 g/mol$

= 2.016 g

mass of 1 mole of $O_{2}$ = $2 mol \times 15.999 g/mol$

= 31.996 g

mass of 1 mole of $F_{2}$ = $2 mol \times 18.998 g/mol$

= 37.996 g

Thus, we can conclude that $F_{2}$ has the greatest mass.

8 0

4 years ago

The average blood volume in the human body is about 4.9 L. Convert this volume to cubic centimeters (cm3).a. milliliters (mL)b.

CaHeK987 [17]

Answer:

a. 4900 mL; b. 4900 cm³ c. 4.9x10⁻³ m³

Explanation:

1 L = 1 dm³

4.9 L = 4.9 dm³

1 dm³ = 1000 cm³ → 4900 cm³

1 cm³ = 1 mL (4900 mL)

1 dm³ = 1x10⁻³ m³ → 4.9x10⁻³ m³

6 0

3 years ago

The rate of diffusion of gas A is double the rate of gas B. The ratio of their molecular weight is

Dafna1 [17]

Answer:

Ratio is 4:1

Explanation:

from graham's law of gaseous diffusion:

${ \bf{ \frac{R _{A} }{R_{B} } = \sqrt{ \frac{M_{A} }{M_{B}} } }}$

but Ra = 2Rb:

${ \sf{ (\frac{2}{1} ) {}^{2} = \frac{M _{A}}{M _{B} } }} \\ \\ { \sf{\frac{M _{A}}{M _{B} } = \frac{4}{1} }} \\ \\ {M _{A}} : {M _{B} } = 4 :1$

4 0

3 years ago

Another term for equilibrium price is a. dynamic price. b. market-clearing price. c. quantity-defining price. d. balance price.

victus00 [196]

Answer:

Option B is correct.

Another name for equilibrium price is **market-clearing price**

Explanation:

Equilibrium price is defined as the price at which the quantity of products/goods/services demanded is equal to/matches the quantity of products/goods/services supplied.

The equilibrium price is also called the market clearing price because, at this price, there is no supply leftover (surplus) or demand leftover (deficit). The market is literally cleared!

4 0

3 years ago