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4 years ago

Balance equations Mg (s)+ HCI(aq)—> MgCI2(aq) + H2(g)

Chemistry

1 answer:

Alina [70]4 years ago

6 0

The balanced equation is Mg(s) + 2HCI(aq) = H2(g) + MgCI2 (aq)

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MatroZZZ [7]

Rocks. Because the air water and soil are part of carbon.

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4 years ago

Read 2 more answers

A 3.00 L flexible container holds a sample of hydrogen gas at 153 kPa.

Lisa [10]

The volume of the flexible container that holds a sample of hydrogen gas at 153 kPa is 1.51L (option B).

<h3>How to calculate volume?</h3>

The volume of a substance can be calculated using the following formula:

P1V1 = P2V2

Where;

P1 = initial pressure
P2 = final pressure
V1 = initial volume
V2 = final volume

153 × 3 = 304 × V2

459 = 304V2

V2 = 459/304

V2 = 1.51L

Therefore, the volume of the flexible container that holds a sample of hydrogen gas at 153 kPa is 1.51L.

Learn more about volume at: brainly.com/question/2098026

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8 0

2 years ago

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Ludmilka [50]

Answer:

Question 1 :

• A compound is ionic if it is made up of a metal or a cation (+) and a non metal or anion (-)

Question 2 :

• While naming ionic compounds, follow the formula → "metal" + "non-metal ending with ide "

• i.e; Sodium Chloride:

${ \rm{Na {}^{ + } _{(aq)} + Cl {}^{ - } _{(aq)} \: \dashrightarrow \: NaCl _{(aq)}} \: \: \: \: \: \: \: \: } \\ { \rm{sodium + chloride \: \dashrightarrow \: sodium \: chloride}}$

Question 3 :

• The answer above that question is perfect.

Question 4 :

1 atom → Mono. But it is highly recommended to ignore it

2 atoms → DI

3 atoms → TRI

4 atoms → TETRA

5 atoms → PENTA ( such as pentaoxide )

7 atoms → HEPTA ( such as heptaoxide )

Question 5 and 6:

Are perfectly answered.

5 0

3 years ago

The wavelength of the violet light emitted from a hydrogen atom is 410.1 nm. This light is a result of electronic transitions be

VashaNatasha [74]

Answer:

e. 4.847 x 10-19 J

Explanation:

From the given information:

The equation connecting the photon energy and the wavelength is:

$E_{photon } = \dfrac {hc}{\lambda}$

where;

$planck's \ constant \ (h)$ = 6.626 * 10 ^{-34} J.s

$velocity \ of \ light \ (c)$ = 3.00 * 10^8 m/s

wavelength $\lambda = 410.1 \ nm \times \dfrac{10^{-9} \ m}{1 \ nm}$

$\lambda = 4.101 \times 10^{-7} \ m$

To determine the photon energy of violet light

$E_{photon } = \dfrac {(6.626 \times 10^{-34} J/s ) \times (3.00 \times 10^8 \ m/s) }{4.101 \times 10^{-7} \ m}$

= 4.847 × 10⁻¹⁹ J

4 0

3 years ago

What is the subscript for oxygen in its molecular formula

DENIUS [597]

Answer:

Step-by-step explanation:

The formula for the most stable form of oxygen is O₂, so the subscript is 2.

However, there is a less stable form of oxygen called ozone. Its formula is O₃, so the subscript for ozone is 3.

8 0

4 years ago

Balance equations __Mg (s)+ __HCI(aq)—> __MgCI2(aq) + __H2(g)

Balance equations Mg (s)+ HCI(aq)—> MgCI2(aq) + H2(g)