Chemistry High School

!Urgent!
How does the law of conservation of mass apply to this reaction: Mg + HCl → H2 + MgCl2?

A. Hydrogen and chlorine need to be balanced. There is an equal amount of magnesium on each side
B. The equation needs to be balanced. There are fewer hydrogen atoms in the equation than magnesium or chlorine.
C. Only the hydrogen needs to be balanced. There are equal numbers of magnesium and chlorine.
D. The law of conservation of mass has already been applied. There is an equal number of each element on both sides of the equation.

Answers

Answer 1

This question was already answered here's the link

https://brainly.com/question/2023746

Related Questions

What is glacial acetic acid? What function does it have?

Answers

Answer:

Acetic acid, systematically named ethanoic acid, is an acidic, colourless liquid and organic compound with the chemical formula CH₃COOH. Diluted, glacial acetic acid is used in preservation and canning of pickles and other vegetables. It is also used as a descaling agent for cleaning.

Explanation:

When a cold pack is put on your ankle what happens to the molecules in your ankle?

Answers

The molecules slow down (when things are cold molecules move slow, when things are hot molecules move fast)

which one goes where? ​

Answers

Answer:

precipitation goes to the left box

condensation goes to the bottom box

evaporation goes in the top right box

Explanation:

hope this is helpfull

can you relate to these pictures

Far left precipitation , bottom evaporation , condensation top right . I hope this helped .

Hurry for A brainlist

Answers

Answer:

Option C .P=79, N= 118 Atomic number=79 Mass number=197

Which of earth's spheres consists of all living things?

Answers

"lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air)

Suppose you wish to jump horizontally and in order for you to jump a distance of 4 feet horizontally, you must exert a force of 200 N. When you are standing on the ground, you have no trouble jumping 4 feet horizontally. If you are standing in a canoe, however, and you need to jump 4 feet to reach the pier, you will surely fall into the lake. Why is it that you cannot jump 4 feet out of a canoe when you can easily do this when on land?

Answers

Answer: because it is

Explanation: to be honest is just is there is not explanation needed

A solid object with the density of 2.8 g/mL is placed in water. What will most likely happen?


(a) It will dissolve.

(b) It will float.

(c) It will sink.

(d) It will melt.

Thanks!

Answers

Answer:

When a solid with the density of 2.8 g/mL is placed in water, it will sink.

what action is not necessary before lighting a bunsen burner?

Answers

Answer:

Even though you didn't include any option choices in your question, I've searched it up anyways, and every source I found says that the answer is "Leave the gas stop open for a few minutes before lighting to clear the line."

Explanation:

Hope this is what you were looking for :)

If not, then I'm sorry.

the chemical bond between elements of the two terminals of the periodic table is

Answers

Answer:

Covalent bonds are much more common in organic chemistry than ionic bonds. A covalent bond consists of the simultaneous attraction of two nuclei for one or more pairs of electrons. The electrons located between the two nuclei are bonding electrons.

...

what are the 4 quantum numbers for the last electron in promethium 

Answers

Answer:

Promethium atoms have 61 electrons and the electronic shell structure is [2, 8, 18, 23, 8, 2] with Atomic Term Symbol (Quantum Numbers) 6H5/2.

The sample contains 1. 02 mol S. To calculate the mole ratios of the elements, you will divide each molar amount by 1. 02 mol. Calculate the mole ratios of the elements in the compound. Round each ratio to the nearest whole number. Mole ratio of H:S = mole ratio of S:S = mole ratio of O:S =.

Answers

Which of the following are steps necessary to ensure patient safety? O a) Make sure that the medication is dispensed in the same units in which it was prescribed. Ub) Review any calculation questions with the pharmacist. c) Check to see if there's a better medication for the patient's problem. d) Dispense an extra dose to save the patient from having to return in case of loss or damage to one of the doses. O e) Compare the label on the medication with the order from the physician.

PLEASE HELP ME ASAAAAPPPPPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!

Balance the chemical equation using the algebraic method.

C4H10+O2=CO2+H2O

SHOW YOUR WORK PLEASEEEEEEEEE

Answers

The given equation to be balanced is
C
4
H
10
+
O
2
→
C
O
2
+
H
2
O

We begin by counting the number of
C atoms on both sides. We have 4C on the left and 1C on the right.
⇒
C
4
H
10
+
O
2
→
4
C
O
2
+
H
2
O



Now count the number of H atoms on both sides. We have 10H on the left and 2 H on the right.
⇒
C
4
H
10
+
O
2
→
4
C
O
2
+
5
H
2
O



Now, O's turn. We have 2 O on the left and 13 O on the right.
⇒
C
4
H
10
+
13
2
O
2
→
4
C
O
2
+
5
H
2
O



or

2
C
4
H
10
+
13
O
2
→
8
C
O
2
+
10
H
2
O


PLS HELP WILL GIVE BRAINLIEST!
Based on the diagram below, in what period is the atom located on the periodic table? *
a. period 4
b. period 2
c. period 6
d. period 1

Answers

Answer:

C.  Period 6

Explanation:

why do blue messel shell get thicker

Answers

up right

read the last 3 paragraph you will see the answer



My atomic mass is 35.453

Answers

The element is chlorine

Which of these demonstrates one of Newton's Laws of Motion? A seat belt holds you in your seat kicking a bowling ball will affect you more than the ball a fireman is knocked backward when he turns on his hose all three are examples of Newton's Laws

Answers

Answer:

the last one: all three are examples of Newton's laws

Explanation:

i guess

does cream cheese frosting have to be refrigerated?

Answers

Answer:

Yes its true because cream cheese has to be refrigerated it will spoil it just depends on how long its out.

Explanation:

Yes cause if you leave it out it will taste disgusting and go off

what waves can pass through a bell jar?

Answers

Answer:heat waves

Explanation:

In a double-replacement reaction, the

Answers

Answer: just want points

Explanation: POINTS!! ;)

Find the volume of 5.74 grams of NO2 (Hint: use two factors)

Answers

Answer:

1.2 cm^3

Explanation:

5.74 grams of a something occupies a volume of 1.2 cm^3 .


Periodic table puzzles

Answers

Answer:

Explanation:

I can explain if you ask

A sample of an unknown gas occupies 5.51 L at 1.31 atm. What pressure would thisgas exert in a 0.520 L container if the temperature is held constant?

Answers

Answer:

P₂ = 13.9 atm (3 sig. figs.)

Explanation:

The pressure (P), Volume (V) relationship with Temperature (T) & mass (n) held constant is an inverse proportionality. That is Boyles Law ...

P ∝ 1/V => P = k/V => k = P·V

For two pressure-volume conditions, the proportionality constant (k) remains constant where k₁ = k₂ and P₁·V₁ = P₂·V₂ => P₂ = P₁·V₁/V₂

Given:

P₁ = 1.31 atm.

V₁ = 5.51 L

P₂ = ?

V₂ = 0.520 L

V₂ = (1.31 atm)(5.51L)/(0.520L) = 13.88096154 atm (calc. ans.) = 13.9 atm (3 sig. figs.)

I would be so grateful if someone helped me with my lab report. My lab report is about identifying unknown solids.
- How could I start my introduction?
Thank you and have a great day!!

Answers

Answer:

good afternoon

Explanation:

like that you dummy

Give an example of radiation?

Answers

microwave, light from a candle, xrays, uv light from the sun

Answer:

Ok then answer my question

Explanation:

sorry i cant answer

exist within a compound to hold the
atoms together within molecules

Answers

Answer:

9

Explanation:

I got it right on my last test

A 7.45 L container holds a mixture of two gases at 15 °C. The partial pressures of gas A and gas B, respectively, are 0.364 atm and 0.684 atm. If 0.150 mol of a third gas is added with no change in volume or temperature, what will the total pressure become?

Answers

Answer:

stored and active

Explanation:

both cannot be thransformed into another type of energy

Determine the average velocity of one person​

Answers

Answer:

The average velocity calculator uses the formula that shows the average velocity (v) equals the sum of the final velocity (v) and the initial velocity (u), divided by 2.

Explanation:

Describe the appearance and properties of a gas.

Answers

Answer:

A gas is light, the molecules are moving very fast, and a gas can change forms due to temp of the area its in.

calculate the moles and Molecules presents in ammonia present in 5.6dm3
of its volume STP?

​

Answers

Answer: 0.25 moles NH3

              1.51x10^23 molecules NH3

Explanation:

5.6dm3 (cubic decimeters)

1 dm^3 = 1 liter

We have 5.6L of ammonia (NH3 gas) at STP.  All gases at STP occupy 22.4 liters/mole.  Use this information as a conversion factor:

(22.4 L NH3)/(mole NH3)

Therefore:

(5.6L NH3)/(22.4 L NH3)/(mole NH3) = 0.25 moles NH3

Use Avogadro's number to convert moles to particles/molecules

(0.25 moles NH3)*(6.02x10^23 molecules/mole) = 1.51x10^23 molecules NH3

What is the importance of water?

Answers

IMPORTANCE:

Water is very important. Whether it's from washing your dishes to hydrating, to simply just watering your flowers, water is important.

Washing Dishes

When you eat, after you eat, you wanna clean your dish. You're not gonna keep it dirty, you're going to have to wash it. Soap and water are often used when washing dishes. It's the best way to get it cleaned.

Hydration

Drinking water can have many benefits. It can make you more productive, you can even lose weight, no migraines, and it can boost your metabolism.

Watering Flowers

It's helpful to water plants because watering them on a basis/routine can help them gain nutrients. No watering the plant can result the plant drooping down and for it to become droopy and dry.

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