Ask question

Ask question

All categories

3 years ago

5

It is found that doubling the concentration of a quadruples the reaction rate and tripling the concentration of b triples the re

action rate. what is the overall order of the reaction?

1 answer:

MatroZZZ [7]3 years ago

4 0

Reactant A must be second order and reactant B first order. Overall = add them so 3rd order.

You might be interested in

All substances freeze at the same temperature, so they all have exactly the

Anastasy [175]

Answer:

I think it would be false

Explanation:

All things have a unique freezing/melting point

6 0

3 years ago

A 44.0 g sample of an unknown metal at 99.0 oC was placed in a constant-pressure calorimeter of negligible heat capacity contain

tatiyna

Answer:

$C_m=0.474\frac{J}{g\°C}$

Explanation:

Hello.

In this case, since this is a system in which the water is heated up and the metal is cooled down in a calorimeter which is not affected by the heat lose-gain process, we can infer that the heat lost by the metal is gained be water, it means that we can write:

$Q_m=-Q_w$

Thus, in terms of masses, specific heats and temperatures we can write:

$m_mC_m(T_{eq}-T_m)=-m_wC_w(T_{eq}-T_w)$

Whereas the equilibrium temperature is the given final temperature of 28.4 °C and we can compute the specific heat of the metal as shown below:

$C_m=\frac{-m_wC_w(T_{eq}-T_w)}{m_m(T_{eq}-T_m)}$

Plugging the values in and since the density of water is 1.00 g/mL so the mass is 80.0g, we obtain:

$C_m=\frac{-80.0g*4.184\frac{J}{g\°C} (28.4\°C-24.0\°C)}{44.0g(28.4\°C-99.0\°C)}\\\\C_m=0.474\frac{J}{g\°C}$

Best regards!

6 0

2 years ago

GT bisects BN at point G.<br><br> If BN = 24 find BG

LenaWriter [7]

Answer:

12

Explanation:

If GT bisects BN at point G, then point G would be in the middle of BN. So, since Bg and NG have to be equal and add up to 24, then the answer is 12.

4 0

2 years ago

How are carbon and nitrogen different from each other when it comes to valence electrons

Tasya [4]

Answer:
Carbon has six electrons (2 core and 4 valence), and can form four bonds with neighboring atoms. Nitrogen has seven electrons (2 core and 5 valence)(1s2, 2s2, 2px1, 2py1, 2pz1). So if you are following the rules, you might well assume that nitrogen would be able to form five bonds (after all, it has five valence electrons.)

4 0

3 years ago

Determine the wavelength of the energy that needs to be absorbed for a 3p electron in chlorine to be promoted to the 4s subshell

bazaltina [42]

Answer:

The wavelength of the energy that needs to be absorbed = 52.36 nm

Explanation:

For this study;

Let consider the Rydgberg equation from Bohr's theory of atomic model:

i.e.

$\dfrac{1}{\lambda} = R_H (Z^*)^2( \dfrac{1}{n_1^2}-\dfrac{1}{n_2^2})$

where

Z* = effective nuclear charge of atom = Z - σ = 6

n₁ = lower orbit = 3

n₂ = higher orbit = 4

$R_H$ = Rydyberg constant = 1.09 × 10⁷ m⁻¹

λ = wave length of the light absorbed

∴

$\dfrac{1}{\lambda} = 1.09 \times 10^7}(6)^2( \dfrac{1}{3^2}-\dfrac{1}{4^2})$

$\dfrac{1}{\lambda} = 1.09 \times 10^7}(36)( \dfrac{1}{9}-\dfrac{1}{16})$

$\dfrac{1}{\lambda} = 392400000\times0.0486111111$

$\dfrac{1}{\lambda} =19075000$

$\lambda = \dfrac{1}{19075000}$

$\lambda = \dfrac{1}{1.91\times 10^7 \ m^{-1}}$

$\lambda = 5.236 \times 10^{-8} m$

$\lambda = 52.36 \times 10^{-9} m$

$\lambda = 52.36\ n m$

Therefore, the wavelength of the energy that needs to be absorbed = 52.36 nm

7 0

3 years ago