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4 years ago

Which statement best describes a compound formed by an ionic bond?

Chemistry

2 answers:

olga2289 [7]4 years ago

4 0

Answer is D

Explanation:

ololo11 [35]4 years ago

4 0

Answer:

B. Neutral

Explanation:

When there is a ionic bond, one element steals or takes away an electron from the other element.

An example is NaCl

In this compound, Chlorine atom steals an extra electron from Sodium to fill its outer shell. So, this is a Ionic bond. Since, the Sodium compound gives away an atom, it is positively charged. Since, Chlorine steals an atom, it is negatively charged. Opposite charges attract, so they become a compound.

When positive and negative mix, it becomes neutral.

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What is the molar mass of water (H2O)?

Sidana [21]

Answer:

The molar mass is: 18.02 g/mol.

Explanation:

Mass of two moles of Hydrogen atoms (H2) = 2x 1 g/mol = 2 g/mol.

Mass of one mole of water (H2O) = 2 g/mol + 16 g/mol = 18 g/mol.

1 mole of Hydrogen= 1.01, so if we have 2 moles of it here, that would be 2.02.

1 mole of Oxygen (that's all we have here)= 16.00

Once you add the two together (2.02+16.00), you will get 18.02.

I hope this made sense! Have a great day!

3 0

3 years ago

Density is an intensive physical property that relates the mass of an object to its volume. Density, which is simply the mass of

xz_007 [3.2K]

Answer: 40731.8 grams of this gasoline would fill a 14.6gal tank

Explanation:

Density is defined as the mass contained per unit volume.

$Density=\frac{mass}{Volume}$

Given : Mass of gasoline = ?

Density of the gasoline = $0.737g/ml$

Volume of the gasoline = 14.6gal = 55267.01 ml (1gal=3785.41ml)

Putting in the values we get:

$0.737g/ml=\frac{mass}{55267.01ml}$

${\text {mass of gasoline}}=40731.8g$

Thus 40731.8 grams of this gasoline would fill a 14.6gal tank

6 0

3 years ago

In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a metal. She heats 19.6 grams of z

storchak [24]

Answer:

The specific heat of zinc is 0.375 J/g°C

Explanation:

<u>Step 1: </u>Data given

Mass of zinc = 19.6 grams

Mass of water = 82.9 grams

Initial temperature of zinc T1= 98.37 °C

Initial temperature of water T1= 24.16 °C

Final temperature of water (and zinc) T2 = 25.70 °C

Specific heat of water = 4.184 J/g°C

<u>Step 2: </u>Calculate Specific heat of zinc

Q=m*c*ΔT

Qzinc = -Qwater

m(zinc)*C(zinc)*ΔT(zinc) = -m(water)*C(water)*ΔT(water)

⇒ with mass of water = 82.9 grams

⇒ with C(water) = 4.184 J/g°C

⇒ with ΔT(water) = T2 - T1 = 25.70 - 24.16 = 1.54

⇒ with mass of zinc = 19.6 grams

⇒ with C(zinc) = TO BE DETERMINED

⇒ with ΔT(zinc) = T2 -T1 = 25.70 - 98.37 = -72.67°C

Qzinc = -Qwater

m(zinc)*c(zinc)* ΔT(zinc) = - m(water)*c(water)* ΔT(water)

19.6g* C(zinc) * (-72.67°C) = - 82.9g* 4.184 J/g°C * 1.54 °C

-1424.332*C(zinc) = -534.155

C(zinc) = 0.375 J/g°C

The specific heat of zinc is 0.375 J/g°C

4 0

3 years ago

Which of these elements has physical and chemical properties most similar to silicon (Si)?

siniylev [52]

In order from most to least similar:
1. Germanium
2. Lead
3. Phosphorus
4. Chlorine
The elements in the same column as the element you have are the most similar. The rows are not. For example, though chlorine and magnesium are in the same row, they have very different properties, whereas chlorine and fluorine more similar

6 0

4 years ago

Read 2 more answers

Fungi and bacteria release nitrogen stored in dead tissue through a decomposition process called:

kirill [66]

Fungi and bacteria release nitrogen stored in dead tissue through a decomposition process called B) ammonification.

7 0

3 years ago