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Charra [1.4K]
3 years ago
9

What do the formulas arrow and plus signs in a chemical equation tell you?

Chemistry
1 answer:
Nana76 [90]3 years ago
8 0
You did not add the choices of the answer please put it on before you submit this so I could help you.
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What is the boiling point of water when the external pressure is 187.5 mmhg?
Lostsunrise [7]
i believe the answer is 65°c
8 0
4 years ago
Calculate the amount of heat required for the evaporation of 105.0 g of water at 100.0 c
son4ous [18]
To determine the amount of heat needed to evaporate a certain amount of water at its boiling point, we use the equation,

                  H = m(Hv)

where H is the heat, m is the mass (in grams), and Hv is the latent heat of vaporization. Substituting the known values,

                 H = (105 g)(540 cal/g)

                  H = 56700 cal

                H = 56.7 kcal

Answer: 56.7 kcal
8 0
4 years ago
Methane gas and oxygen gas react to form water vapor and carbon dioxide gas. What volume of carbon dioxide would be produced by
Bas_tet [7]

Answer:

V_{CO_2}=9.23m^3

Explanation:

Hello,

In this case, the undergoing chemical reaction is:

CH_4(g)+2O_2(g)\rightarrow CO_2(g)+2H_2O(g)

Now, as the stoichiometrical factors are in terms of mole but no information about neither the temperature nor the pressure is given, by means of the Avogadro's law, one could perform the stoichiometric calculations with the given volume as both the pressure and temperature remain the same, that is:

V_{CO_2}=9.23m^3CH_4*\frac{1m^3CO_2}{1m^3CH_4} \\\\V_{CO_2}=9.23m^3

Such 1:1 volume relationship equals the 1:1 molar relationship given in the chemical reaction in terms of their stoichiometric coefficients, therefore, the yielded volume of carbon dioxide is also 9.23m³

Best regards.

4 0
4 years ago
Describe the region in model 1 where the highest concentration of hydrogen ion (h + ) is located
neonofarm [45]
<span>THE HIGHEST CONCENTRATION OF HYDROGEN IONS IS LOCATED IN THE INTER-MEMBRANE SPACE. HYDROGEN IONS REACH THE INTER-MEMBRANE SPACE THROUGH PROTEIN CHANNELS EMBEDDED IN THE MITOCHONDRIAL MEMBRANE. THE MAIN FUNCTION OF INTER MEMBRANEIS OXIDATIVE PHOSPHORLATON. ENERGY IS REQUIRED TO MOVE THE HYDROGEN IONS ACROSS THE MEMBRANE BECAUSE THE HYDROGEN IONS ARE MOVING AGAINST THE CONCENTRATION GRADIENT. H+ GOES AGAINST THE CONCENTRATION GRADIENT THE USE OF THE GRADIENT TO DRIVE ATP SYNTHASE. HYDOGEN IONS DRIVE ATP SYNTHASE IN PHTOSYNTHESIS. THIS HAPPENS WHEN HYDROGEN IONS GET PUSHED ACROSS THE MEMBRANE CREATING A HIGH CONCENTRATION INSIDE THE THYLAKOID.</span>
7 0
3 years ago
How many grams are in 3.40 x 10^24 molecules of CH4
Arturiano [62]

Answer:

90.37 g

Explanation:

From Avogadro Number,

1 mole of every substance contains a particle number of 6.02×10²³

From the question,

1 mole of CH₄ contains 6.02×10²³ molecules.

But,

1 mole of CH₄ has a mass of 16 g

Therefore,

16 g of CH₄ contains 6.02×10²³ molecules

Then,

Y g will contain 3.4×10²⁴ molecules

Solve for Y

Y = (16× 3.4×10²⁴)/(6.02×10²³)

Y = 90.37 g

6 0
3 years ago
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