3 years ago

Which statement defines calorimetry

2 answers:

7 0

I can't answer the question without the statements but I can tell you Calorimetry means measuring amounts of heat released or received during a chemical reaction.

Leni [432]3 years ago

6 0

Answer:

Explanation:

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Arturiano [62]

Answer:

Go talk to people more and dont rush things

Explanation:

Youll get one in time

4 0

3 years ago

Read 2 more answers

What is the density of a sample of the alloy pewter, (a mixture of tin and copper or lead) if a 7.11 cm3 sample has a mass of 53

xxTIMURxx [149]

Answer:

<h3>The answer is 7.47 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass = 53.137 g

volume = 7.11 cm³

We have

$density = \frac{53.137}{7.11} \\ = 7.473558368...$

We have the final answer as

Hope this helps you

5 0

4 years ago

C. 2.86 g

KiRa [710]

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7 0

3 years ago

How many moles of H2O are in 36 grams of water?

saw5 [17]

Answer:

2 moles

Explanation:

number of mole =mass /molar mass

mass=36

molar mass=(2*1)+16=18

therefore, no of mole =36÷18 =2

4 0

3 years ago

A chemist makes a solution of NaOH for use in an experiment. She dissolves 0.00500 mol NaOH in 1.00 L H2O. The NaOH completely d

anygoal [31]

Answer:

pH = 11.7

Explanation:

<u>Given:</u>

[OH-] = 0.00500 M

<u>To determine:</u>

pH of the solution

<u>Explanation:</u>

pH refers to the H+ ion concentration in a given solution whereas pOH indicates the OH- ion concentration.

pH and pOH are related by the following equation:

$pH + pOH = 14 ------(1)$

Here:

$pH = -log[H+]\\\\pOH = -log[OH-]$

When OH- = 0.00500 M

$pOH = -log(0.00500) = 2.30\\$

Based on equation(1):

$pH = 14 - pOH = 14 -2.30=11.7$

6 0

4 years ago