All categories

3 years ago

Help i will make you brainiest and give 25 points

Chemistry

2 answers:

Rudiy273 years ago

5 0

THE CORRECT ANSWER IS THE FIRST ONE LI

HOPE THIS HELPS

devlian [24]3 years ago

4 0

The group number tells us about the size weight and molecule elements involved. Also tells us about what types it can form and combine with as well as its reactions also

You might be interested in

‼️✨ HELP IMMEDIATELY 10 POINTS ‼️✨

cluponka [151]

Answer:

1. A

2. A

3. D

4. A

Explanation:

I just did this and these were the answers :)

3 0

4 years ago

Predict the products (if any) that will be formed by the reaction below. If no reaction occurs, write NR after the reaction arro

disa [49]

Answer:

The product is aqueous $CO(HCl)_2$ and $O_2(g)$ .

Explanation:

Given:

⇒ $2HClO_4(aq) +CO(s)$

then,

The reaction will be:

⇒ $2HClO_4(aq)+CO(s) \rightarrow CO(HCl)_2 +O_2 (g)$

In the above reaction, we can see that

The products is:

aqueous $CO(HCl)_2$ and $O_2(g)$

Thus the above is the correct answer.

7 0

3 years ago

Leona [35]

Explanation:

element symbol is Na

total electrons is 11

valences electron is 1

4 0

4 years ago

Please answer these questions

lions [1.4K]

I found number one
Atoms are not drawn to scale. Molecules of compounds have atoms of two or more different elements. For example, water (H2O) has three atoms, two hydrogen (H) atoms and one oxygen (O) atom. Methane (CH4), a common greenhouse gas, has five atoms, one of carbon (C) and four of hydrogen (H, see Fig.

7 0

3 years ago

Read 2 more answers

What is the molality of an aqueous KCl solution with a mole fraction of KCl, XKCl = 0.175? (The molar mass of KCl = 74.55 g/mol

NARA [144]

Answer:

The molality of the KCl solution is 11.8 molal

Explanation:

Step 1: Data given

Mol fracrion KCl = 0.175

Molar mass KCl = 74.55 g/mol

Molar mass H2O = 18.02 g/mol

Step 2: Calculate mol fraction H2O

mol fraction H2O = 1 - 0.175 = 0.825

Step 3: Calulate mass of H2O

Suppose the total moles = 1.0 mol

Mass H2O = moles H2O * molar mass

Mass H2O = 0.825 * 18.02 g/mol

Mass H2O = 14.87 grams = 0.01487 kg

Step 4: Calculate molality

Molality KCl = 0.175 / 0.01487 kg

Molality KCl = 11.8 molal

The molality of the KCl solution is 11.8 molal

5 0

3 years ago