How is a lithium atom (Li) different from a lithium ion (Li+)?

Li has fewer electrons than Li+
Li has more electrons than Li+
Li has fewer protons than Li+
Li has more protons than Li+

Answer:

around 0.283

Explanation:

Answer:

Explanation:

A. Carbon dioxide

D. Oxygen

Answer:

Oxygen and sugar

Explanation:

Answer:

are drifting on a sea of magma.

Explanation: Please mark brainliest.

Answer:

A base forms hydroxide ions in water.

Hope this helps

Answer:

Problem,  Variables,  Hypothesis,  Research,  Procedure,  Data, Conclusion.

Explanation:

First, you have to know what the problem that you're talking about is. Then, you have to know the independent, dependent, and controlled variables are in order to make a hypothesis. Then do research about the topic. After that, you make the procedure your experiment, if that's what your doing. Then after the experiment, you find the data. Using that data, you make a conclusion.

Answer:

4.22675

Explanation:

Answer:

c

Explanation:

Proper lane placement can include positioning your car 36 inches from the right or left line. Therefore, option B is correct.

Using different lane positions to make adjustments for potential problems and create larger space between car and problem situations. Lane position is the placement of car in the center, on the right, or on the left of a lane.  The width of a lane is twelve feet on most highways or streets.

There are three main positions are lane position 1 is center of lane, lane position 2 is left side, and lane position 3 is right side. Position 2 is left side of lane is for car.

Position 3 is a vehicle placement to the right when a restriction to path of travel or your line of sight occurs. Proper lane placement can include positioning your car 36 inches from the right or left line.

Thus, option B is correct.

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Answer:

The Sun powers life on Earth; it helps keep the planet warm enough for us to survive. It also influences Earth’s climate: We know subtle changes in Earth’s orbit around the Sun are responsible for the comings and goings of the past ice ages. But the warming we’ve seen over the last few decades is too rapid to be linked to changes in Earth’s orbit, and too large to be caused by solar activity

Explanation:

Answer:

1- Dropping a sliced orange into a vat of Sodium Dydroxide

Explanation:

The other answers (2-4) are only physical changes that don't change any chemical compositions.

Answer:

3.

Explanation:

4 carbon equals butane

O=C-NH2 equals amide

The chemical name for the compound with the chemical formula shown in the image is 1-butanamide.

In order to name the compound:

Four (4) carbon is named as "But-" and the functional group is an amide on the first carbon.

Thus, the chemical name would be 1-Butanamide.

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Answer:

Your answer is D. It is the heat required to change a gram of substance from a liquid to a gas.

Answer:

ammonium to nitrate.

Explanation:

they tie em together

sound energy, kinetic energy,

i cant think of any more but hope this helps

Answer:

Mechanical to kinetic to sound to heat

Explanation:

Remember that all types of energy transformation end in heat

Answer:

[tex]\rm _{6}^{15}\text{C} \longrightarrow \, _{-1}^{0}\text{e} + \, _{7}^{15}\text{N}[/tex]

Explanation:

The unbalanced nuclear equation is

[tex]\rm _{6}^{15}\text{C} \longrightarrow \, _{-1}^{0}\text{e} + \, ?[/tex]

Let's write the question mark as a nuclear symbol.

[tex]\rm _{6}^{15}\text{C} \longrightarrow \, _{-1}^{0}\text{e} + \, _{Z}^{A}\text{X}[/tex]

The main point to remember in balancing nuclear equations is that the sums of the superscripts and the subscripts must be the same on each side of the equation.  

Then

15 =  0 + A, so A = 15 -   0 = 15, and

 6 = -1 + Z, so Z  =   6 + 1 =    7

Then, your nuclear equation becomes

[tex]\rm _{6}^{15}\text{C} \longrightarrow \, _{-1}^{0}\text{e} + \, _{7}^{15}\text{X}[/tex]

Element 7 is nitrogen, so the balanced nuclear equation is

[tex]\rm _{6}^{15}\text{C} \longrightarrow \, _{-1}^{0}\text{e} + \, _{7}^{15}\text{N}[/tex]

Answer:

The correct option is;

D) 3,215 calories

Explanation:

Here we are required to convert 13,450 J to calories

1 calorie is the amount of heat required to raise the temperature of 1 gram of water by 1°C

Therefore, 1 calorie = 4.184 Joules

Hence, 1 Joule = 1/4.184 calorie for which we have;

13,450 J = 13,450 × 1/4.184 calories = 13,450/4.184 calorie

13,450 J = 3,214.63 calories

Rounding up to the nearest  whole number, we have;

13,450 J ≈ 3,215 calories.

Answer:

i agree with the above to collect rock samples

Explanation:

took test got 100 best of luck

The  purpose of the Apollo space missions was to to collect rock samples from the moon.

The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of Australia).The Moon is a planetary-mass object with a differentiated rocky body, making it a satellite planet under the geophysical definitions of the term and larger than all known dwarf planets of the Solar System.

It lacks any significant atmosphere, hydrosphere, or magnetic field. Its surface gravity is about one-sixth of Earth's at 0.1654 g, with Jupiter's moon Io being the only satellite in the Solar System known to have a higher surface gravity and density.

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Answer:

[tex]4.6875x10^20[/tex]

Explanation:

Answer:

80

Explanation:

im not rlly sure exactly but i think thats the anser

Answer:

Mass is how much matter an object has. Weight is how much gravity an object is being acted upon.

Explanation:

The mass of an object will stay the same no matter where you place it. But if you were to place the object, in the moon for example, then the weight of the object would be less since there is less gravity on the moon.

Answer:

1 mole Of Helium = Weight of Helium/4Weight of Helium = 1*4 = 4 grams 1 mole of Helium contains 6.023*10²³ ( Avogadro number) atoms. Number of moles of in 4 grams of Hydrogen 4 grams is = given weight / molecular weight of Hydrogen (H₂) = 4/2 =2 Number of atoms/molecules in 2 moles of Hydrogen is (2*6.023*10²³) atoms. = 12.046*10²³ atoms.

(Hope this helps)

The number of atoms in 2 moles of helium is 1.204×10²⁴ atoms

From Avogadro's hypothesis,

1 mole of any substance = 6.02×10²³ atoms

Thus,

1 mole of helium = 6.02×10²³ atoms

With the above information in mind, we can obtain the number of atoms in 2 moles of helium as follow:

1 mole of helium = 6.02×10²³ atoms

Therefore,

2 moles of helium = 2 × 6.02×10²³ atoms

2 moles of helium = 1.204×10²⁴ atoms

Thus, we can conclude that 2 moles of helium contains 1.204×10²⁴ atoms

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Answer:

0.74176 M HCl

Explanation:

1) Write out a balanced equation.

  KOH + HCl --> KCl + H2O

2) Calculate #mol KOH in 76.0mL needed for the titration.

 1.22 mol KOH in 1000mL

 x mol KOH in 76.0mL

 x = 0.09272 mol KOH

3) Use the balanced equation ratio (from step 1), 1 mol KOH : 1 mol HCl.

0.09272 mol KOH = 0.09272 mol HCl

4) 125mL of the HCl solution was used for the titration, so find the molarity.

0.09272 mol HCl is in 125mL

x mol HCl in 1000mL

x = 0.74176 mol HCL / 1 L

SO... 0.74176 M HCl is the answer.

*hope this helped*

- A Kind Stranger

Answer:

The new pressure is 0.167 atm

The correct answer is option A

Explanation:

Step 1: Data given

Volume of the gas = 22.4 L

Pressure of the gas = 0.265 atm

The volume increases to 35.52 L

Step 2: Calculate the new pressure

P1*V1 = P2*V2

⇒with P1 = the initial pressure = 0.265 atm

⇒with V1 = the initial volume = 22.4 L

⇒with P2 = the new pressure = TO BE DETERMINED

⇒with V2 = the increased volume = 35.52 L

0.265 atm * 22.4 L = P2 * 35.52 L

P2 = (0.265 atm * 22.4 L) / 35.52 L

P2 = 0.167 atm

The new pressure is 0.167 atm

The correct answer is option A

Answer:

As the temperature of a sample of gas falls from 45.0ºC to 30.0ºC, its pressure falls to 300.

Explanation:

Answer: Pounds per Cubic inch(lb/in3)

"Typical nonmetals have a dull, coloured or colourless appearance; are brittle when solid; are poor conductors of heat and electricity; and have acidic oxides." - Wikipedia

Answer:

It is called catalyst.

Answer:

A catalyst

Explanation:

is a substance that can alter the rate of a chemical reaction. Catalysts can be successfully used to increase the rate of a chemical reaction.