Ask question

Ask question

All categories

2 years ago

12

An unknown element is a solid at room temperature, is highly conductive, and is easily hammered into thin sheets. it is most lik

ely a:
A. Metal
B. Non-metal
C. Metalloid

1 answer:

Inessa [10]2 years ago

8 0

A. Metal

Metals are very conductive, malleable, and almost all of them are solid at room temperature.

You might be interested in

Which compound is expected to exhibit hydrogen bonding forces?

Likurg_2 [28]

A hydrogen bond<span> is the electrostatic attraction between two polar groups that occurs when a </span>hydrogen<span> (H) atom covalently bound to a highly electronegative atom such as nitrogen (N), oxygen (O), or fluorine (F) experiences the electrostatic field of another highly electronegative atom nearby. examples h20</span>

7 0

3 years ago

Identify each definition that applies to the compound in red. Check all that apply.

andre [41]

Answer:

Arrhenius acid & Bronsted-Lowry acid

Explanation:

4 0

3 years ago

Why is haemoglobin a pure substance

dem82 [27]

<span>Haemoglobin is a pure substance because it contains only one type of atom. </span>

6 0

2 years ago

How many grams of water are produced when 35.8 grams of Calcium hydroxide reacts with lots of Hydrochloric acid?

Veseljchak [2.6K]

Are produced 72 grams of water in this reaction.

<h3>Mole calculation</h3>

To find the value of moles of a product from the number of moles of a reactant, it is necessary to observe the stoichiometric ratio between them:

$Ca(OH)_2 + 2HCl = > 2H_2O + CaCl_2$

Analyzing the reaction, it is possible to see that the stoichiometric ratio is 1:2, so we can perform the following expression:

$MM_{Ca(OH)_2} = 74.1g/mol$

$MM = \frac{g}{mol}$

$74.1 = \frac{35.8}{mol}\\mol = 2$

So, if there are 2 mols of Ca(OH)2:

Ca(OH)2 | H2O

$\frac{1mol}{2mol} =\frac{2mol}{xmol}$

$x = 4mol$

Finally, just find the number of grams of water using your molar mass:

$MM_{H_2O} = 18g/mol$

$18= \frac{m}{4}\\m = 72g$

So, 72 grams are produced of water in this reaction.

Learn more about mole calculation in: brainly.com/question/2845237

5 0

2 years ago

How is the molarity affected if some solution splashes out of the flask during titration?

Jobisdone [24]

Answer:

not affected?

Explanation:

pretty sure M / concentration isn't affected, only volume.

5 0

2 years ago