Chemistry High School

Find the final product for: Li + Br and show work.

Answers

Answer 1

Lithium is atomic number 3, so it has valency 1

While, Bromine is atomic number 35, and has valency 1

Lithium has an extra electron while Bromine need an electron, since they both need and have one electron, the form

LiBr (Lithium Bromide) where Li is +ve charged and Br is -ve charged

Happy to help :)

Related Questions

Help plz 10 pointsss———-

Answers

first would be homeostasis, second is a wolf panting after chasing

Answer:

the first question is homeostasis. and the second question is the wolf panting

Explanation:

let me know if u need an explanation n ill try to give one :)

The United States has landed a device on Mars.

Answers

Answer:

They landed a Rover!

Explanation:

Isn't that Awesome!?!

What is needed for our cells to get energy from our food?

Answers

Answer:

cellular respiration is needed for our cells to get energy from our food.

Explanation:

Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.

is it true or false?

Answers

Answer:

The rainforest is teeming with animals and insects, so you would hear  humming. Frogs and birds make some of the loudest rainforest sounds.

howler monkeys, are the loudest so i think that its false cause lost of animals are there but some can be quiet

How can an unbalanced force affect an object?
O Unbalanced forces keep an object at rest.
Unbalanced forces cause objects to accelerate.
O Unbalanced forces cannot affect on object.

Answers

Unbalanced forces cause objects to accelerate. This is respecting Newton’s 1st law of motion.

help, please ( rando words )

Answers

Answer:

ionic

Explanation:

Answer:

the answer is ionic

Explanation:

hope this helps!

please can i also have brainliest too?

A 20.0 mL of 0.27 M solution of the salt NaA has a pH of 8.70.

a) Calculate the pk, value of the acid HA.


(Correct to 3 sig. fig)

b) Calculate the pH of a solution containing 0.3 M HA and 0.1 M NaA.


(Correct to 3 sig. fig)

Answers

Answer:

a) 3.969

b) 3.489

Explanation:

a) Calculate the pk, value of the acid HA

PH of salt hydrolysis

P[tex]^{H}[/tex] = 1/2 ( pkw + pka + logC )

8.7 * 2 =  14 + log ( 0.27 )  + Pka

∴ Pka = 3.9686  ≈  3.969

b) Calculate the PH of a solution containing 0.3 M HA and 0.1 M NaA

PH = Pka + log ( salt / acid )

    = 3.9686 + log ( 0.1 / 0.3 )

    =  3.9686 - 0.48  = 3.489

Calculate the calories of heat required to melt 35.0 g of ice.

Answers

Answer:

35.0g of ice at 0 degrees

Explanation:

After eating, nutrients must be oved to other parts of the body. Which of the following systems will transport these nutrients.

nervous
digestive
circulatory
excretory

Answers

The circulatory system

Answer:

The circulatory system

Explanation:

Bronsted Lowry reactions can use hydroxide ions.
True
False

Answers

Answer:

f

Explanation:

True or false? To prepare 20.0 mL of 2.00 M solution of hydrochloric acid from a 10.0 M stock solution, you should take 4.00 mL of the stock solution and add 20.0 mL of water.

Answers

Sorry I don’t know but o have to answer for pionts

False. To prepare 20.0 mL of 2.00 M solution of hydrochloric acid from 10.0 M stock solution, 4.0 mL of the stock solution and 16.0 mL of water would be needed.  

Recall the law of diffusion that:

C1V1 = C2V2, where C1 = initial concentration, V1 = initial volume, C2 = final concentration, and V2 = final volume.

In this case, if C1 =10.0 M, V1 = ?, C2 = 2.00 M and V2 = 20.0 mL

V1 = 2 x 20/10

         = 4.0 mL

Hence, 4.0 mL of the stock solution would be taken. Since the final volume is 20.0 mL, only 16.0 mL of water would need to be added and not 20.0 mL.

More on dilution can be found here: https://brainly.com/question/13844449

. Chalk is made of CaCO​ 3​ . How many molecules are in 5 grams of chalk?

Answers

Answer:

20.02 grams of chalk.

Explanation:

The chemical symbols of hydrogen, calcium and chlorine are:

H, C, Cl
H, C, Cn
H, Ca, Cl
Hn, Cal, Cl

Answers

Answer:

H, Ca, Cl is the answer dude

Answer:

hydrogen is H

calcium is Ca and chlorine is Cl

object with a mass of 30 kg is observed to accelerate at the rate of 4 m/s2. Calculate the force required

Answers

this answer is 2kg good luck

3. The mass percent of nitrogen in NH4Cl is *
O 16.7% nitrogen
0 25.0% nitrogen
0 26.2% nitrogen
O none of these

Answers

Answer:

None of these

Explanation:

The mass percent is 35.4% (3 s.f.)

14/4+35.5 = 14/39.5 x 100 = 35.4 (3 s.f.)

What is the formula for S2O5

Answers

Answer:

chemical formula

Explanation:

3 points
5. Which of the following is true regarding the atoms involved in a
chemical reaction? *
a) During a chemical reaction, atoms will always be combined into much larger
molecules.
b) Some of the atoms will always be changed into a different type of atom by a
chemical reaction.
c) Some of the atoms present before the reaction will always be lost during a
chemical reaction.
d) The same number of each type of atom will always be present before and after a
chemical reaction takes place.

Answers

d) The same number of each type of atom will always be present before and after a chemical reaction takes place.

Mass is never created or lost in a chemical reaction, so the atoms of each element must stay balanced.

Is specific heat capacity always equal to heat capacity?

Answers

Answer:

No specific heat capacity and heat capacity are not equal

Biomes are characterized by temperature, precipitation, and the plant and animal communities that live there.
True or false?

Answers

Biomes are typically characterized based on the dominant plant and animal species found in a certain geographic area. Temperature and precipitation are what determine the geographic distribution of a biome which species can live there.

False

name two examples which are not considered as matter​

Answers

Answer:

Light and Sound can be considered as non-matter.

Explanation:

Various forms of Energy like Heat, Sound, Light can be considered as non-matter

is the distilled water/acidic/basic/netural?​

Answers

Distilled water is neutral, because the H+ and OH- ions are balanced. Litmus is a natural acid-base indicator extracted from a type of lichen.

Distilled Water Has A Neutral pH, Which Means It Is Neither Acidic Nor Basic. Therefore, It's Neutral.

(PHYSICAL SCIENCE) Help please !!

Answers

The answer is 4 !!!!!
I think the answer is 4 hope it’s right..

A sample of hydrogen changes its pressure from 756 torr to 499 torr while the temperature remains constant. After the pressure is reduced, the volume of the gas is 789 mL. What was the original volume?​

Answers

P1 = 756 torr

P2 = 499 torr

V2 = 789 mL

V1 = ?

applying Boyle's Law

P1 * V1 = P2 * V2

756 torr * V1 = 499 torr * 789 mL

V1 = 499 torr * 789 mL / 756 torr

V1 = 520.78 mL

Help please if link will report

Answers

All i know is the first one is electromagnet, the second one is attraction, the third is magnetism, the fourth is magnetize, the fifth is repulsion, the sixth is lines of force, the seventh is magnetic pole, the eighth is electromagnetism, the ninth is magnetic field, and the tenth is permanent magnet

Which property of sulphuric acid makes it suitable to use as a catalyst for the preparation of esters?​

Answers

In Fisher esterification, sulfuric acid is used as a catalyst and its function is to convert the carboxylic compound in its conjugate acid. This favours the nucleophilic attack of the alcohol. To act as a catalyst you need a strong acid, therefore sulphuric acid is suitable for this kind of reaction.

helllllppppppp pleaseeeeeee​

Answers

Just look it up :) hope this helps

PLEASE HELP ME!!!

A 38.8g piece of metal alloy absorbs 181J as its temperature increases from 25.0°C to 36.0°C°. What is the alloy's specific heat? Show your work.

Answers

Answer:

0.424 J/g °C

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right  

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Chemistry

Thermochemistry

Specific Heat Formula: q = mcΔT

q is heat (in Joules)m is mass (in grams)c is specific heat (in J/g °C)ΔT is change in temperatureExplanation:

Step 1: Define

[Given] m = 38.8 g

[Given] q = 181 J

[Given] ΔT = 36.0 °C - 25.0 °C = 11.0 °C

[Solve] c

Step 2: Solve for Specific Heat

Substitute in variables [Specific Heat Formula]:                                             181 J = (38.8 g)c(11.0 °C)Multiply:                                                                                                             181 J = (426.8 g °C)c[Division Property of Equality] Isolate c:                                                         0.424086 J/g °C = cRewrite:                                                                                                             c = 0.424086 J/g °C

Step 3: Check

Follow sig fig rules and round. We are given 3 sig figs.

0.424086 J/g °C ≈ 0.424 J/g °C

Scientific investigations must be well __________ to be sure the data collected will help answer the scientist's question

Answers

Answer:

The answer is relevant.

Scientific investigations must be well relevant to be sure the data collected will help answer the scientist's question.

What is a scientific investigation?

A scientific investigation is an investigation that is done in the field of science. This unravels the secrets of the earth and the logical reason behind the things happening.

There are three types of scientific investigations. They are descriptive investigation, comparative investigation, and experimental investigation. When we see a thing happening in the environment or anywhere, always find a reason behind it.

The steps in completing a scientific investigation are:

Asking questionsTo make a hypothesis.Performing research.Making an observation.Analyzing the result.

Thus, the scientific investigations must be well relevant to the data.

To learn more about the scientific investigation, refer to the below link:

https://brainly.com/question/8386821

#SPJ6

1. Why do you think it is so important to think about momentum in the NASCAR world? Use the
equation for momentum (momentum = mass times velocity) in your answer. (Hint: NASCAR
drivers drive really fast.] 1 point

Answers

Answer:

because it is

Explanation:

simple

Answer:

Explanation: none

is Tungsten carbide an elementary substance
or compound?

Answers

Answer:

Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms.

Answer:compound

Explanation:

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