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KatRina [158]
3 years ago
14

WILL GIVE BRAINLIEST

Chemistry
1 answer:
forsale [732]3 years ago
6 0

Answer:

atomic number

H is on the very top left

they are organized into columns with somewhat similar behaviors ie the alkali metals (the first column or period) are all very reactive (except H as it only has one electron in one shell, it is sometimes put into its own separate category

Explanation:

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All the atoms contain neutron, except<br> A. Oxygen<br> B. Nitrogen<br> C. Hydrogen<br> D. Chlorine
Slav-nsk [51]

Answer:

C.Hydrogen

Explanation:

The hydrogen atom contains 1 proton and 1 electron, but no neutrons.

6 0
3 years ago
Read 2 more answers
In which of the following reactions will Kc = Kp? a. 4 NH3(g) + 3 O2(g) ⇌ 2 N2(g) + 6 H2O(g) b. SO3(g) + NO(g) ⇌ SO2(g) + NO2(g)
Ratling [72]

Answer:

The correct option is <em>b) SO₃(g) + NO(g) ⇌ SO₂(g) + NO₂(g)</em>

Explanation:

The relation between Kc and Kp is given by the following equation:

Kp = Kc (RT)^{dn}

where R is the gas constant (0,082 L.atm/K.mol), T is the temperature (in K) and dn is the change in moles.

The change in moles (dn) is calculated as:

dn = moles of products - moles reactants

If dn=0, RT= 1 ⇒ Kc=Kp

We calculate dn for each reaction from the estequiometrial coefficients of products and reactants as follows:

a) 4 NH₃(g) + 3 O₂(g) ⇌ 2 N₂(g) + 6 H₂O(g)

dn= (2+6) - (4+3) = 1 ⇒ Kc ≠ Kp

b) SO₃(g) + NO(g) ⇌ SO₂(g) + NO₂(g)

dn = (1+1) - (1+1)= 0 ⇒ Kc = Kp

c) 2 N₂(g) + O₂(g) ⇌ 2 N₂O(g)

dn= 2 - (2+1) = -1 ⇒ Kc ≠ Kp

d) 2 SO₂(g) + O₂(g) ⇌ 2 SO₃(g)

dn = 2 - (2+1) = -1 ⇒ Kc ≠ Kp

The reaction in which Kc=Kp is b), because reactants and products have the same number of moles.

3 0
3 years ago
4.6 moles of a gas are at a temperature of 325 K and a volume of 96.8 L, what is the pressure of the ga
andre [41]

Answer:

1.3 atm

Explanation:

Apply the ideal gas law: PV = nRT

Since we need to find the pressure, solve for pressure:

P = nRT / V

Plug in our given values of n = 4.6 moles, R = 0.08206 (ideal gas law constant using atm), T = 325 K, and V = 96.8 L:

P = 4.6(0.08206)(325) / 96.8 = 1.267 atm -> 1.3 atm (two significant figures)

3 0
3 years ago
How do Cilia and flagella help cells?
otez555 [7]

Answer:

They are protection from the cell!

Explanation:

They move liquid around the cells  and have the same internal structure as each other. They are also found in most microorganisms. Hope this helps :)

3 0
3 years ago
Write the balanced equation. Then calculate the volume of 0.65 M HCl required to completely neutralize 400.0 ml of 0.88 M KOH.
Misha Larkins [42]
Hello!

The balanced equation for the neutralization of KOH is the following:

HCl(aq) + KOH(aq) → KCl(aq) + H₂O(l)

To calculate the volume of HCl required, we can apply the following equation:

 moles HCl = moles KOH \\  \\ cHCl*vHCl=cKOH*vKOH \\  \\ vHCl= \frac{cKOH*vKOH}{cHCl}= \frac{400 mL*0,88M}{0,65M}=  541,54mL

So, the required volume of HCl is 541,54 mL

Have a nice day!
8 0
3 years ago
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