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nata0808 [166]
3 years ago
8

2. Which is faster travelling 4200 cm/s or travelling 97 000 m/h?

Chemistry
1 answer:
MakcuM [25]3 years ago
4 0
i think 97000 m/h is faster
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You breathe in 12.0 L of pure oxygen at 298 K and 1,000 kPa to fill your lungs. How many moles of oxygen did you take in. Can yo
givi [52]
We are given with
V = 12L
T = 298 K
P = 1000 kPa

We are asked to get the number of moles, n

We can solve this using the ideal gas law
PV = nRT
n = PV / RT
Simply substitute the values and use the appropriate value for R.
8 0
3 years ago
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You have a cup of tea (250 ml) that is 375 K which is too hot to drink. It needs to be cooled to 350 K before you can drink it.
S_A_V [24]

Answer:

The hot tea should transfer <em>25.63 kJ</em> the surroundings to cool the tea.

Explanation:

  • To solve this problem, we can use the relation:

<em>Q = m.c.ΔT,</em>

where, Q is the amount of heat has to be transferred from the tea to the surroundings to cool the tea (Q = ??? J).

m is the mass of the hot tea (m = dV = (1.0 g/mL)(250 mL) = 250 g), suppose the density of water is the density of tea.

c is the specific heat of the hot tea (c = 4.10 J/°C.g).

ΔT is the difference between the initial and final temperature (ΔT = final T - initial T = 350 K - 375 K = -25°C).

<em>∴ Q = m.c.ΔT</em> = (250 g)(4.10 J/°C.g)(-25°C)) = <em>- 25630 J = - 25.63 kJ.</em>

<em>So, the hot tea should transfer 25.63 kJ the surroundings to cool the tea.</em>

4 0
3 years ago
What type of compound is fe3n2
Shkiper50 [21]

Fe3N2, also known as Iron (II) nitride, is an ionic compound.


Ionic compounds are compounds that consists of metals and non-metals bonded with ionic bonds. The metal ion gives up electron(s) to the non-metals.


Since iron is a metal and nitrogen is an non-metal, the bond they would form would be an ionic bond. Iron gives up 2 electrons to form iron(II) ion, while nitrogen gains 3 electrons to form nitride ion. Since one iron cannot let a nitrogen gain 3 electrons, so in the compound, there would be 3 iron (ii) ions that has given up 6 electrons in total while 2 nitride ions have gained 6 electrons in total.

8 0
3 years ago
The haber process is typically carried out at a temperature of approximately 500∘c. What would happen to the rate of the forward
Dovator [93]

Answer:

The reaction rate would decrease

Explanation:

The equation for the Haber process is given by;

N₂(g) + 3H₂(g) ⇆ 2NH₃(g)

  • The reaction occurs at a temperature of 500°C
  • Therefore, the forward reaction requires a temperature of 500°C.
  • According to Le Chatelier's principle, if a factor affecting equilibrium is altered, the equilibrium will shift in the direction that counteracts the effect causing it.
  • In this case, decreasing the temperature to 100°C will lower the rate of the forward reaction.
  • Consequently, less ammonia gas will be produced as the reverse reaction is favored.

4 0
4 years ago
What is the name of this molecule?
ankoles [38]

Answer: The answer is either A or C. I'm leaning more towards A.

7 0
3 years ago
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