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3 years ago

Identify an alkene and carboxylic acid using primary observations

Chemistry

1 answer:

ehidna [41]3 years ago

4 0

Answer:

The general formula for the carboxylic acids is C nH 2n+1COOH (where n is the number of carbon atoms in the molecule, minus 1).

Explanation:

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There are two important isotopes of uranium— and ; these isotopes are nearly identical chemically but have different atomic mass

lana [24]

Answer:

Explanation:

The relation between average velocity of a gas molecules and its molecular mass is as follows .

average velocity v

$v = k \sqrt{\frac{1}{M} }$ where k is a constant .

If v₁ and v₂ be the velocities corresponding to molecular masses 349 and 352 .

$\frac{v_1}{v_2 } = \sqrt{\frac{M_2}{M_1} }$

$\frac{v_1}{v_2 } = \sqrt{\frac{352}{349} }$

= 1.004

3 0

4 years ago

calculate the difference in slope of the chemical potential against temperature on either side of the normal freezing point of w

kipiarov [429]

Answer:

(a) The normal freezing point of water (J·K−1·mol−1) is $-22Jmole^-^1k^-^1$

(b) The normal boiling point of water (J·K−1·mol−1) is $-109Jmole^-^1K^-^1$

(c) the chemical potential of water supercooled to −5.0°C exceed that of ice at that temperature is 109J/mole

Explanation:

Lets calculate

(a) - General equation -

$(\frac{d\mu(\beta )}{dt})p-(\frac{d\mu(\alpha) }{dt})_p$ = $-5_m(\beta )+5_m(\alpha )$ = $-\frac{\Delta H}{T}$

$\alpha ,\beta$ → phases

ΔH → enthalpy of transition

T → temperature transition

$(\frac{d\mu(l)}{dT})_p -(\frac{d\mu(s)}{dT})_p$ = $= -\frac{\Delta_fH}{T_f}$

= $\frac{-6.008kJ/mole}{273.15K}$ ( $\Delta_fH$ is the enthalpy of fusion of water)

= $-22Jmole^-^1k^-^1$

(b) $(\frac{d\mu(g)}{dT})_p-(\frac{d\mu(l)}{dT})_p= -\frac{\Delta_v_a_p_o_u_rH}{T_v_a_p_o_u_r}$

= $\frac{40.656kJ/mole}{373.15K}$ ( $\Delta_v_a_p_o_u_rH$ is the enthalpy of vaporization)

= $-109Jmole^-^1K^-^1$

$[\mu(l-5$ ° $C)-\mu(l,0$ ° $C)]$ = $[\mu(s-5$ ° $C)-\mu(s,0$ ° $C)]$ $=-S_m$ ΔT

$\mu(l,-5$ ° $C)-\mu(s,-5$ ° $C)=-Sm\DeltaT [\mu(l,0$

$\Delta\mu=(21.995Jmole^-^1K^-^1)\times (-5K)$

= 109J/mole

6 0

3 years ago

What's the name of the compound Fe(NO2)3

Zina [86]

The chemical Formula Fe(NO2)3 represents the compond iron (lll) nitrate. The compound contains 1 atom of iron represented by Fe, three atoms of nitrogen rep. by N and 6 atoms of oxygen, rep. by O.

7 0

4 years ago

Energy Levels: An ionized atom having Z protons has had all but one of its electrons removed. If E is the total energy of the gr

S_A_V [24]

Explanation:

Formula for energy value is as follows.

E = $\frac{-E_{0}}{n^{2}}$

where, $E_{0}$ = 13.6

n = number of shell

So, at ground state energy of hydrogen atom will be as follows.

E = $\frac{-E_{0}}{n^{2}}$

= $\frac{-13.6}{(1)^{2}}$

= -13.6

Hence, for an ionized atom value of energy will be as follows.

E' = $-13.6 \times Z^{2}$

or, E' = $E \times Z^{2}$

Thus, we can conclude that total energy of the remaining electron in the ionized atom is $E \times Z^{2}$ .

7 0

3 years ago

Why dose a small container have more pressure than a large container of both have the same amount of gas in them

Volgvan

Because in a smaller container, there is less room for the gas to exist. the gas much all push together closer to fit in the smaller container. as gas atoms, they have less room to bounce around. in a bigger container, it has more room to more and is less pressurized

4 0

3 years ago