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4 years ago

Pls help ASAP ! Identify the following reaction: H2 + O2 → H2O

Chemistry

1 answer:

MrRissso [65]4 years ago

3 0

Answer:

Synthesis Reaction

Explanation:

Here we see H2 and O2 are being combined H2O. Synthesis reactions are where we see a combination to make a <u>single product</u>.

So here it'd be A + B =AB

2Na(s)+Cl2(g)→2NaCl(s)

Decomposition would be the break down of a compound into 2, the opposite of synthesis.

AB = A + B

2HgO(s)→2Hg(l)+O2(g)

Single replacement is where 1 element replaces another in a reaction, or switches place with 1 element.

AY + B = A + BY

2 HCl(aq) + Zn(s) → ZnCl2(aq) + H2(g)

Double replacement is similar but 2 elements are switch/replaced.

AY + BX = AX + BY

CuCl2(aq) + 2 AgNO3(aq) → Cu(NO3)2(aq) + 2 AgCl(s)

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What biome has an extremely warm, dry climate and supports plants that are adapted to living without a lot of water?

____ [38]

I think thats a tundra

6 0

3 years ago

The formation constant* of [M(CN) 4 ]2− is 7.70 × 10 16 , where M is a generic metal. A 0.150 mole quantity of M(NO3)2 is added

iogann1982 [59]

Answer:

0 M.

Explanation:

Hello,

In this case, the undergoing reaction is:

$M(NO_3)_2+NaCN\leftrightarrow [M(CN)_4]^{-2}+NaNO_3$

Nonetheless, it only matters the reaction forming the given complex:

$M^{+2}+4CN^-\leftrightarrow [M(CN)_4]^{-2}$

In such a way, the formation constant turns out:

$K_F=\frac{[[M(CN)_4]^{-2}]_{eq}}{[M^{+2}]_{eq}[CN^{-}]_{eq}^4}$

Now, one could assume that the initial concentrations of the ions equals the original compounds concentrations:

$[M^{+2}]_0=0.150M;[CN^-]_0=0.820M$

In such a way, we modify the formation constant in terms of the change $x$ due to the reaction progress:

$K_F=\frac{x}{(0.150-x)(0.820-x)^4}=7.70x10^{16}$

Now, solving for $x$ :

$x_1=0.15M\\x_2=0.82M$

The feasible solution is 0.15M which will lead to an equilibrium concentration of M⁺² of 0M

$[M^{+2}]_{eq}=0.15M-0.15M=0M$

This fact has sense since the formation constant is very large.

Best regards.

3 0

3 years ago

What is the mass of falling rock if it produces a force of 147 N ?

Fittoniya [83]

M=147/9 x8 m=15kg
The mass of falling rock is 15kg.

7 0

4 years ago

On a summer day early in the moming, a balloon is filled with helium when the temperature

MAXImum [283]

Based on the data provided;

number of moles of helium gas is 1.25 moles
pressure at peak temperature is 259.3 kPa
internal pressure is above 256 kPa, therefore, the balloon will burst.
pressure should be reduced to a value less than 256 kPa by reducing the temperature

<h3>What is the ideal has equation?</h3>

The ideal gas equation relatesthe pressure, volume, moles and temperature of a gas.

The moles of helium gas is calculated using the Ideal gas equation:

PV = nRT

n is the number of moles of gas

R is molar gas constant = 8.314 L⋅kPa/Kmol

P is pressure = 239 kPa

T is temperature = 21°C = 294 K

V is volume = 12.8 L

Therefore;

n = PV/RT

n = 239 × 12.8 / 8.314 × 294

n = 1.25 moles

The number of moles of helium gas is 1.25 moles

At peak temperature, T = 46°C = 319 K

Using P1/T1 = P2/T2

P2 = P1T2/T1

P2 = 239 × 319/294

P2 = 259.3 kPa

The pressure at peak temperature is 259.3 kPa

At 42°C, T = 315 K

Using P1/T1 = P2/T2

P2 = P1T2/T1

P2 = 239 × 315/294

P2 = 256.07 kPa

Since the internal pressure is above 256 kPa, the balloon will burst.

The pressure should be reduced to a value less than 256 kPa by reducing the temperature.

Learn more about gas ideal gas equation at: brainly.com/question/12873752

6 0

2 years ago

Using the periodic table, complete the following.

vladimir1956 [14]

Molecular weight= 1.00784 u
mass of one mole = 1.008 grams

4 0

3 years ago