2. Which ions will form an ionic bond?
A. two negative ions
B. a positive and a neutral atom
C. two positive ions
D. a positive ion and a negative ion

Answers

Answer 1

Answer:

D. a positive ion and a negative ion

Explanation:

Ionic bonds is formed from the attraction of opposite full charges. So a positive ion and a negative ion will make a ionic bond (Similar to how Na+ and Cl- ions make salt - which is basically a crystal of ions bonded via ionic bonds)


Related Questions

Which atom is abundant on earth​

Answers

Answer:

Oxygen

Explanation:

Oxygen is abundant on earth

Which level of organization is formed when a group of organs work together to perform complex functions?

Answers

Hey
I think that could be “system of organs”

Answer:

an organ system is formed when a group of organs works together to perform complex functions. it is composed of two or more tissue types and performs a specific set of tasks for the body

While driving her car on a hot sunny day, a woman was struck in the back of the neck by the dough from an exploding can of Pillsbury biscuits. From the sound it made and the feeling of warm sticky dough on her neck, she thought she had been hit by a bullet! Describe the likely conditions that caused this to happen. Be sure to explain AT THE MICRO scale how the particles were affected.

Answers

Answer:

The dough is made from flour sugar, baking soda, sometimes yeast. The sugar is converted into gaseous products including carbon dioxide, CO₂ and alcohols. As more gases are produced, the pressure increases, and according to Charles's law, as the temperature on a sunny day is higher than on a cool day, the pressure of the gases increases further, to the point that the can containing the biscuits can not hold the pressure, leading to an explosion

Explanation:

Which statement is true?

1. Heat refers to a process.
2. Thermal energy refers to a process.
3. Thermal energy refers to a single particle.
4. Heat refers to a quantity.

Answers

Answer:

4. Heart refers to a quantity

Answer:

Heat Refers To A Process

What mass of helium gas (in g) occupies 15.3 L at STP?

Answers

Answer:

[tex]\boxed {\boxed {\sf 2.73 \ g \ He}}[/tex]

Explanation:

We are asked to find the mass of helium gas given a volume.

1. Convert Liters to Moles

1 mole of any gas occupies a volume of 22.4 liters. So, 1 mole of helium gas contains 22.4 liters of helium. Create a ratio using this information.

[tex]\frac {1 \ mol \ He }{ 22.4 \ L \ He}[/tex]

We are converting 15.3 liters of gas to moles, so we multiply by that value.

[tex]15.3 \ L \ He *\frac {1 \ mol \ He }{ 22.4 \ L \ He}[/tex]

The units of liters of helium (L He) cancel.

[tex]15.3 *\frac {1 \ mol \ He }{ 22.4}[/tex]

[tex]\frac {15.3}{22.4} \ mol \ He[/tex]

[tex]0.6830357143 \ mol \ He[/tex]

2. Convert Moles to Grams

The molar mass is the mass of 1 mole of a substance. These values are found on the Periodic Table as atomic masses, but the units are grams per moles. Look up the molar mass of helium.

He: 4.0026 g/mol

Create another ratio using the molar mass.

[tex]\frac {4.0026 \ g \ He}{1 \ mol \ He}[/tex]

Multiply by the number of moles we calculated.

[tex]0.6830357143 \ mol \ He *\frac {4.0026 \ g \ He}{1 \ mol \ He}[/tex]

The units of moles of helium (mol He) cancel.

[tex]0.6830357143*\frac {4.0026 \ g \ He}{1 }[/tex]

[tex]2.73391875 \ g \ He[/tex]

3. Round

The original measurement of volume has 3 significant figures, so our answer must have the same.

For the number we calculated, that is the hundredths place.

The 3 in the thousandths place to the right (2.73391875) tells us to leave the 3 in the hundredths place (2.73391875).

[tex]2.73 \ g \ He[/tex]

15.3 liters of helium gas is approximately 2.73 grams of helium.

The chemical elements display periodicity when they're arranged according to
A: Atomic Weight
B: Atomic Mass
C: Atomic Volume
D: Atomic Number

Answers

Answer:

HEY YOUR ANSWER IS

ATOMIC NUMBER

I could be wrong but I think it’s Atomic Number

A sample of oxygen gas has a volume of 453.7 mL when its pressure is 0.435 atm. What will the volume of the gas
be
at a pressure of 0.88 atmospheres, if the temperature remains constant?

Answers

Answer:

is you'r question correctly?

or not

what is the balanced equation of 2HCl + Mg - MgCla + Ha​

Answers

2HCl + Mg => MgCl2 + H2

A report on the various water conservation methods used by any one
states of India

Answers

Answer:

Kuls are diversion channels that carry water from a glacier to village. Often spanning long distances, with some over 10 km long, kuls have been around for centuries. They are the lifeline of people of Spiti valley of Himachal Pradesh and in Jammu too.

Kul starts at the glacier, which is to be tapped. Keeping the head clear of debris is achieved by lining the sides of Kul with stones which ensure that there is no seepage or clogging. The Kul leads to the village where the water is stored in a circular water tank. The water is drawn from here are per the need of the village.

Explanation:

Here is a list of some of the traditional water conservation methods that are still in use:

Oxit bazơ có những tính chất hóa học nào?

Answers

Answer:

tác dụng với acid,

Explanation:

Which of the following materials contains a base?

a. Stomach digestive juices
b. Orange juice
c. Ammonia window cleaner
d. Vinegar

Answers

Answer:

c. ammonia window cleaner

Explanation:

Window cleaners contain ammonia (a base) for the purpose of removing the dust and grease on the windows.

digestive juices, orange(a citrus) juice, and vinegar are all highly acidic.

... give me brainliest please :)) ...

What is the electron configuration for fluorine?

Answers

Answer:

1s2 2s2 2p5                

step by step:

Answer:

Electron configuration using subshell;

1s² 2s² 2p⁵

using main shell ie;

2,7

calculate the maximum mass of ethanol that could be obtained from 30.0g of glucose​

Answers

Answer:

15.3g

Explanation:

C6H12O6 → 2C2H5OH + 2CO2

1 mol C6H12O6 = 180g

1 mol CH3-CH2-OH = 46g

From 180g glucose ethanol can get = 92g

30g glucose ethanol gives us = (92*30)/180 = 15.33g

What is the freezing point in °C) of a 0.743 m
aqueous solution of KCI?
Enter your rounded answer with
3 decimal places.
K; for water = 1.86 °C/m

Answers

Answer:

2.764 °C

Explanation:

ΔT = 2 x 1.86 C/m x 0.743m = 2.764C That means the freezing point of the solution is 2.764C less than the pure solvent (water)

why scientist use the international system of units

Answers

Explanation:

 it allows scientists from disparate regions to use a single standard in communicating scientific data without vocabulary confusion.

calculate the mass of magnesium needed to make 25g of magnesium oxide​

Answers

Explanation:

here's the answer to your question about

why atoms of magnet differ from normal atoms?

Answers

Answer:

ones in magnets r close together while others can be spread apart

aluminum hydroxide molecular weight step by ste​

Answers

Hydroxide step by ste

Molar mass calculation for Cl^2

Answers

Answer:

Mass of Cl = 35.5

Mass of Cl2 => 35.5×2

=> 71 g/mol

hope that helps ✌

Answer:

71

explain:

The atomic mass of chlorine is equal to the molar mass of chlorine so the molar mass of chlorine is 35.5

=> molar mass for Cl^2: 35,5*2=71

1.One gram-atom of Nitrogen is heavier than one gram-atom of Oxygen.

True or false

2.Measurements of a physical quantity. can be very precise but not accurate

True or False

Answers

Answer:

1 . statement is false

2. statement is true

Which reaction occurs at the cathode in an electrochemical cell?
A. Cu(s) → Cu2+(aq) + 2e
B. Cu2+(aq) + H2(g) → Cu(s) + 2H+(aq)
C. Cu(s) + 2H+(aq) → Cu2+(aq) + H2(g)
D. Cu2+(aq) + 2e → Cu(s)

Answers

Answer:

I could be wrong but I say it's letter b

Explanation:

I hope you have an great night

Propane can be cracked to produce propane and hydrogen. Complete the symbol equation for the reaction.

Answers

Answer:

Explanation:

C3H8= C3H6 +H2

PLZ HELP ME WITH MY WORK
For his science fair project, Martin studied the growth of trumpet vines. He grew 20 trumpet vines. All of the conditions were the same, except that he grew 10 in a flower bed without support and 10 in a flower bed near a trellis. The stems of the vines near the trellis twisted around the trellis, and these Yines grew tall and seemed much healthier than the vines grown without a trellis. In fact, four of the vines grown without a trellis died. Which characteristic of living things were the trumpet vines displaying as the stems twisted around the trellis?
A. Movement
B. Response to a stimulus
C. Use of energy
D. Reproduction​

Answers

Answer:

it's B

Explanation:

Climbing plants require an external support to grow vertically and enhance light acquisition. Vines that find a suitable support have greater performance and fitness than those that remain prostrate. Therefore, the location of a suitable support is a key process in the life history of climbing plants

Which statement describes the VSEPR theory?
A.
Electron pairs in the valence shell of an atom have a tendency to attract other nearby electron pairs.

B.
Electrons in the valence shell of an atom exert a repulsive force on other atoms while forming a chemical bond.

C.
Electron pairs in the valence shell of an atom exert a repulsive force on all other electron pairs in the valence shell of the atom.

D.
Electrons in the valence shell exert a repulsive force while completing their octet during the formation of chemical bond.

Answers

Answer:

A.

Electron pairs in the valence shell of an atom have a tendency to attract other nearby electron pairs.

Hope it helps you.

calcium hydrogen sulphite cress cross

Answers

Answer:

Ca Hso4 ×

Explanation:

Because i did whT you said

What Chemicals including in Cosmetic?​

Answers

The chemicals including in cosmetic are:-

1.Talcum Powder

2.Nanoparticles

3.Coal Tar

4.Triclosan

5.Toluene

Hope this helps you.

c. What is Cytoplasm? What does it contain?​

Answers

Answer:

Cytoplasm is the space between cell membrane and nuclear membrane filled with a translucent liquid . It contains carbohydrates , proteins , lipids , nucleic acids , sodium and pottassium salts , water and enzymes .

which of the following has more atoms 3.14 g Cu or 1.10 g of H? Explain

Answers

63.5 gm cu contain 6.02*10^23 molec
1 gm cu contain 6.02*10^23/63.5
3.14 gm contain 6.02*10^23*3.14/63.5

similary in case of H2
1.10*6.02*10^23/2

then you can compare the result

Formation of HCl from H₂and Cl₂ is example of

photochemical

electrochemical

displacement​

Answers

Answer:

Combination reaction.

Explanation:

The reaction depicted in the question is;

H2 (g) + Cl2 (g) ⟶ 2HCl (l)

Now, this reaction shows that two reactants namely hydrogen and chlorine react to form a single product named Hydrogen chloride. This process is called combination reaction.

what is the most appropriate unit to measure the following; the length of a football field. b) the diameter of a tennis ball​

Answers

Explanation:

a) m (metre)

b) mm (millimeter)

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