All categories

3 years ago

Where would you expect to find an element with the greatest electronegativity?

Chemistry

1 answer:

beks73 [17]3 years ago

4 0

As you move from left to right of the periodic table, the element becomes more negative.

You might be interested in

The products of a reaction are NaCl and H2O. What does the law of conservation of matter reveal about the reactants in the react

allochka39001 [22]

Answer:

Explanation:

total mass should be equal on both sides

it's a double do displacement reaction

HCl + NaOH --> NaCl + H2O

3 0

3 years ago

How many molecules are in a mole of H2O

belka [17]

1023 molecules or atoms depending on substance

7 0

2 years ago

Read 2 more answers

Two objects are brought into contact Object 1 has mass 0.76 kg, specific heat capacity 0.87) g'c and initial temperature 52.2 'C

taurus [48]

Answer:

$T_F=77.4\°C$

Explanation:

Hello there!

In this case, according to the given information, it turns out possible to set up the following energy equation for both objects 1 and 2:

$Q_1=-Q_2$

In terms of mass, specific heat and temperature change is:

$m_1C_1(T_F-T_1)=-m_2C_2(T_F-T_2)$

Now, solve for the final temperature, as follows:

$T_F=\frac{m_1C_1T_1+m_2C_2T_2}{m_1C_1+m_2C_2}$

Then, plug in the masses, specific heat and temperatures to obtain:

$T_F=\frac{760g*0.87\frac{J}{g\°C} *52.2\°C+70.7g*3.071\frac{J}{g\°C}*154\°C}{760g*0.87\frac{J}{g\°C} +70.7g*3.071\frac{J}{g\°C}} \\\\T_F=77.4\°C$

Yet, the values do not seem to have been given correctly in the problem, so it'll be convenient for you to recheck them.

Regards!

4 0

3 years ago

How many molecules are in 3cacl2

Travka [436]

Answer:

The molar mass and molecular weight of 3CaCl2 is 332.952.

5 0

3 years ago

Finding the pH for [H+] = 9.4 * 10-3 M?

saul85 [17]

Answer:

pH = 2.0

Explanation:

To find the pH of a solution, take the -log[H+]. In this case, the -log(9.4 x 10^-3) equals 2.02687 which makes 2.0 when accounting for significant figures.

3 0

2 years ago