All categories

3 years ago

Determine whether the following statement is TRUE (T) or FALSE (F).

Chemistry

1 answer:

Alenkasestr [34]3 years ago

4 0

Answer:

I say the statement is true

You might be interested in

A sample of gas is held at 100oc at a volume of 20 L.if the volume is increased to 40 L what is the new temperature of the gas i

ElenaW [278]

Answer:

470 °C

Explanation:

This looks like a case where we can use Charles’ Law:

$\dfrac{V_{1}}{T_{1}} =\dfrac{V_{2}}{T_{2}}$

Data:

V₁ = 20 L; T₁ = 100 °C

V₂ = 40 L; T₂ = ?

Calculations:

(a) Convert the temperature to kelvins

T₁ = (100 + 273.15) K = 373.15 K

(b) Calculate the new temperature

$\begin{array}{rcl}\dfrac{V_{1}}{T_{1}}& =&\dfrac{V_{2}}{T_{2}}\\\\ \dfrac{\text{20 L}}{\text{373.15 K}} &=&\dfrac{\text{40 L}}{T_{2}}\\\\{\text{15 000 K}} & = & 20T_{2}\\T_{2} & = &\dfrac{\text{15 000 K}}{20 }\\\\T_{2} & = & \textbf{750 K}\\\end{array}$

Note: The answer can have only two significant figures because that is all you gave for the volumes.

(c) Convert the temperature to Celsius

T₂ = (750 – 273.15) °C = 470 °C

3 0

3 years ago

1. Matter is

Charra [1.4K]

Answer:

Matter is anything that mass and can occupy space.

Atoms are the smallest particles that takes part in a chemical reaction.

A molecule is a that can exist on its own

7 0

3 years ago

The noble-gas notation for tin (Sn) will contain the symbol Ar Kr Xe Rn

KIM [24]

Answer: Noble-gas notation of Sn contains Kr.

Explanation: Tin ( Sn) is an element having atomic number 50.

Nearest noble gas to this element is Krypton which has an atomic number 36.

Electronic configuration or noble-gas notation for Sn is written as :

$Sn=[Kr]4d^{10}5s^25p^2$

As seen from above, Noble gas Krypton having symbol 'Kr' is coming in the electronic configuration for Tin.

3 0

4 years ago

Read 2 more answers

Which is the correct Lewis structure for acetylene (C2H2)?

Fed [463]

H-C≡C-H this is the lewis structure of acetylene
please mark as brainliest

6 0

3 years ago

Read 2 more answers

Determine the equilibrium pH and speciation (concentration of each species) of the following two solutions. Neglect activity cor

irina [24]

Answer:

HCl solution - H30+ and Cl ions. pH 3

NaCl - Na+ and Cl-. pH 7

Explanation:

a) HCl solution - the hydrogen ion combines with water molecule to form the hydronium molecule which is responsible for acidity. The chloride ion is also found in solution.

pH = -log [H+] = -log(10^-3) = 3

b) NaCl 10-3 g. The solid dissocates in water forming the Na+ and Cl- ions. None of these ions affect pH

5 0

4 years ago