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2 years ago

8

Two blocks of platinum have a temperature of 200 Celsius one block has a mass of 10g the other block has a mass of 100g do the b

locks have the same amount of thermal energy?

1 answer:

Jet001 [13]2 years ago

8 0

Two blocks of platinum have a temperature of 200 Celsius. Both the blocks have the same amount of thermal energy because both are metals which conducts heat energy throughout their bodies.

<h3>What is conduction?</h3>

Conduction is the process by which heat energy is transmitted between neighboring atoms or molecules. We know that metals are the good conductors of heat and electricity so if one part absorb heat, it will spread to the whole body so we can conclude that the thermal energy will remain the same amount throughout the whole body.

Learn more about thermal energy here: brainly.com/question/19666326

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2Na + Cl₂ --> 2NaCl, if you start with 0.50 mol of sodium and you ultimately produce 0.43 mol in lab, what is your percent yi

sineoko [7]

Answer:

86% is the percent yield of the reaction

Explanation:

Percent yield is defined as 100 times the ratio of actual yield / theoretical yield.

Based on the reaction:

2Na + Cl₂ → 2NaCl

The theoretical yield is 0.50 moles because 0.50 mol of Na are added in the beginning. As 0.43 moles are produced, actual yield is 0.43 mol. And percent yield is:

0.43mol / 0.50mol * 100 =

<h3>86% is the percent yield of the reaction</h3>

4 0

3 years ago

Choose the statement below that is TRUE. Question 7 options: The term "strong electrolyte" means that the substance is extremely

Setler [38]

Answer: A weak acid solution consists of mostly nonionized acid molecules.

Explanation:

Strong electrolytes are those solutions which undergo complete dissociation when dissolved in water. The dissociation of strong electrolytes is given by a right arrow.

Weak electrolytes are those solutions which do not undergo complete dissociation when dissolved in water. The dissociation of weak electrolytes is given by a rightleft arrow.

Weak acids are those substances which dissociate partially to give $H^+$ ions when dissolved in water. Thus most of molecules remain unionized in solutions.

$CH_3COOH\rightleftharpoons CH_3COO^-+H^+$

Strong acids are those substances which dissociate completely to give $H^+$ ions when dissolved in water.

$HNO_3(aq.)\rightarrow H^+(aq.)+NO_3^-(aq.)$

3 0

3 years ago

What would be the composition and ph of an ideal buffer prepared from lactic acid (ch3chohco2h), where the hydrogen atom highlig

Mashutka [201]

Answer:

$P_H =2.86$

$c=1.4\times 10^{-4}$

Explanation:

first write the equilibrium equaion ,

$C_3H_6O_3$ ⇄ $C_3H_5O_3^{-} +H^{+}$

assuming degree of dissociation $\alpha$ =1/10;

and initial concentraion of $C_3H_6O_3$ =c;

At equlibrium ;

concentration of $C_3H_6O_3 = c-c\alpha$

$[C_3H_5O_3^{-} ]= c\alpha$

$[H^{+}] = c\alpha$

$K_a = \frac{c\alpha \times c\alpha}{c-c\alpha}$

$\alpha$ is very small so $1-\alpha$ can be neglected

and equation is;

$K_a = {c\alpha \times \alpha}$

$[H^{+}] = c\alpha$ = $\frac{K_a}{\alpha}$

$P_H =- log[H^{+} ]$

$P_H =-logK_a + log\alpha$

$K_a =1.38\times10^{-4}$

$\alpha = \frac{1}{10}$

$P_H= 3.86-1$

$P_H =2.86$

composiion ;

$c=\frac{1}{\alpha} \times [H^{+}]$

$[H^{+}] =antilog(-P_H)$

$[H^{+} ] =0.0014$

$c=0.0014\times \frac{1}{10}$

$c=1.4\times 10^{-4}$

6 0

4 years ago

45. What are the products of a neutralization reaction? (2 points)<br> DOWE

MAVERICK [17]

Answer:

Salt and water are the products of neutralization reaction

Example:

NaOH + HCl➡NaCl+H2O

8 0

4 years ago

Which of the following statements is TRUE for the following situation:

Mekhanik [1.2K]

Answer:

The electron in xenon are dropping more energy levels than helium

4 0

3 years ago