All categories

3 years ago

At STP, which substance has metallic bonding?

1 answer:

5 0

Silver. For the most part only metals can have metallic bonding. Ammonium chloride has ionic bonding (poly-atomic cation + nonmetal=ionic bonding), iodine is a diatomic element so it will form a covalent bond with itself, and barium oxide has ionic bonding (metal+nonmetal or metal+poly-atomic anion=ionic bonding).

I hope this helps. Let me know in the comments if anything is unclear.

You might be interested in

A 42.0g sample of compound containing only C and H was analyzed. The results showed that the sample contained 36.0g of C and 6.0

user100 [1]

Answer:

What is the empirical formula of the compound?

Explanation:

When the relative masses of elements in a hydrocarbon are given, it is possible to use this information to obtain the empirical formula by dividing the given masses of each element by the relative atomic masses of the element. The lowest ratio is now used to divide through to obtain the empirical formula of the compound.

The empirical formula only shows that ratio of atoms of each element present in the compound. From the information provided, the empirical formula of the compound is CH2. Hence the answer.

5 0

3 years ago

A chemistry graduate student is given 500. mL of a 0.20 M chloroacetic acid (HCH2ClCO2) solution. Chloroacetic acid is a weak ac

zhenek [66]

Answer:

12 g of choloracetic acid

Explanation:

The buffer equilibrium is:

HCH₂ClCO₂ ⇄ CH₂ClCO₂⁻ + H⁺

pka= -log ka =

Ka: 1,3x10⁻³ = [CH₂ClCO₂⁻] [H⁺] / [HCH₂ClCO₂]

By Henderson-Hasselbalch equation:

pH = pka + log₁₀ [A⁻] / [HA]

3,01 = 2,89 + log₁₀ [A⁻] / [HA]

1,318 = [A⁻] / [HA]

As molar concentration of chloroacetic acid (HA) is 0,20M

[A⁻] = 0,26 mol/L

The volume is 500 mL ≡ 0,5 L

0,26mol/L × 0,5 L = 0,13 moles of chloroacetic acid. In grams:

0,13 mol × (94,5g / 1mol) = 12 g of choloracetic acid

I hope it helps!

3 0

4 years ago

At the beach, a student fills two beach pails, one with sand and one with seawater. She places both pails in the same spot in th

Gnesinka [82]

Answer:

Which word in the following sentence is a linking verb?

The gym became noisy when fans stamped and cheered for the home team.

A. became

B. noisy

C. stamped

D. cheered

Which word in the following sentence is a linking verb?

The gym became noisy when fans stamped and cheered for the home team.

A. became

B. noisy

C. stamped

D. cheered

Explanation:

Which word in the following sentence is a linking verb?

The gym became noisy when fans stamped and cheered for the home team.

A. became

B. noisy

C. stamped

D. cheered

7 0

3 years ago

Read 2 more answers

Which statement describes a scientific law?

Sholpan [36]

Answer:

A law is a proven fact that can not be changed.

Explanation:

Scienctists are most inquisitive in their research and as such they developed what is called scientific method which they use to create and learn new things. The scientific method includes:

1. Observation.

2. Hypothesis.

3. Experiment

4. Conclusion.

5. Law.

Among this scientific method, the law is the last in the pattern. A law is only given after the experiment has been tested over and over again and found to be true.

4 0

3 years ago

Calculate the mass in grams of 3. 29 x 104 mol of lithium Help please?

Sedaia [141]

Answer 

no. of moles =

 $\frac{mass \: {g} \: }{ \: molecular \: wight}$ 

so, mass (g)= no. of moles × molecular wight

Explanation:

Li molecular wight equal to 6.941

mass (g)=3.29×104 mol ×6.941 =2374.93g of lithium 

3 0

3 years ago