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2 years ago

This worm infects humans by getting into the blood stream. It gets a

Chemistry

1 answer:

liraira [26]2 years ago

5 0

Pretty sure it’s C- hope this helps❤️

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if the pressure of a gas at constant volume is 3.5 atm at 100°c, what will the pressure be if the tempature is changed to 250°c?

Degger [83]

Sorry don't know this one

6 0

3 years ago

33 protons 36 electrons 45 neutrons

Artist 52 [7]

As has an atomic number of 33, so it has 33 protons.

It has a charge of 3-, so there are three more electrons than protons. Thus, there are 36 electrons.

It has a mass of 75, which is the sum of neutrons and protons.

33+n=75 ---> n = 75 - 33 = 42 neutrons

The answer is e) 33 protons, 42 neutrons and 36 electrons.

6 0

3 years ago

Given the following equilibrium constants: Kb B(aq) + H2O(l) ⇌ HB+(aq) + OH−(aq) 1/Kw H+(aq) + OH−(aq) ⇌ H2O(l) What is the equi

bija089 [108]

Answer: The value of $K_c$ for the net reaction is $\frac{K_b}{K_w}$

Explanation:

The given chemical equations follows:

Equation 1: $B(aq.)+H_2O(l)\rightleftharpoons HB^+(aq.)+OH^-(aq.);K_b$

Equation 2: $H^+(aq.)+OH^-(aq.)\rightleftharpoons H_2O(l);\frac{1}{K_w}$

The net equation follows:

$B(aq.)+H^+(aq.)\rightleftharpoons HB^+(aq.);K_c$

As, the net reaction is the result of the addition of first equation and the second equation. So, the equilibrium constant for the net reaction will be the multiplication of first equilibrium constant and the second equilibrium constant.

The value of equilibrium constant for net reaction is:

$K_c=K_1\times K_2$

We are given:

$K_1=K_b$

$K_2=\frac{1}{K_w}$

Putting values in above equation, we get:

$K_c=K_b\times \frac{1}{K_w}=\frac{K_b}{K_w}$

Hence, the value of $K_c$ for the net reaction is $\frac{K_b}{K_w}$

7 0

3 years ago

What are valence electrons ?

Arada [10]

Answer:In chemistry, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.

Explanation: hope this helped

8 0

3 years ago

Which mineral is commonly found in igneous rocks? halite feldspar gypsum talc

erik [133]

Answer:

Feldspars

Explanation:

Hope this helps! :) x

6 0

3 years ago

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