Answers
Answer:
imma go with the answer B
The product in the reaction [tex]\rm Zn + 2HCl \rightarrow[/tex] is [tex]\rm ZnCl_2 + H_2[/tex]. The correct answer is option D.
A reaction is a process that involves the transformation of one or more substances into one or more different substances.
The reaction between zinc (Zn) and hydrochloric acid (HCl) is a classic example of a single displacement reaction. In this reaction, zinc reacts with hydrochloric acid to produce zinc chloride ([tex]\rm ZnCl_2[/tex]) and hydrogen gas ([tex]\rm H_2[/tex]).
The balanced chemical equation for this reaction is:
[tex]\rm Zn(s) + 2HCl(aq) \rightarrow ZnCl_2(aq) + H_2(g)[/tex]
Therefore, the product of the reaction between zinc and hydrochloric acid is zinc chloride ([tex]\rm ZnCl_2[/tex]) and hydrogen gas ([tex]\rm H_2[/tex]). Option D is the correct answer.
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Related Questions
The mole is used in chemistry
A) to count large numbers of very small particles, such as atoms or molecules.
B) to relate the mass and the number of particles of a substance to each other.
C) to relate the mass and the volume of a substance to each other.
D) all of these are true.
Answers
So I think it’s either D or C
How many grams of KClO3 will dissolve in 300g of water at 50°C?
Answers
Answer:
50 g
Explanation:
Please brainiest
According to the chemical formula shown below, all of the following elements are found in phosphoric acid EXCEPT
A. Hydrogen
B.Oxygen
C.Phosphorus
D.Potassium
Please asap i need help
Answers
The pressure in a bicycle tire is 105 psi at 25˚C in Fresno. You take the bicycle up to Huntington, where the temperature is – 5˚C. What is the pressure in the tire?
Answers
Answer:
94.4 Psi
Explanation:
Given that;
P1 = 105 psi
T1 = 25˚C + 273 = 298 K
P2 = ?
T2 = – 5˚C + 273 = 268 K
P1/T1 = P2/T2
P1 T2 = P2T1
P2 = P1T2/T1
P2 = 105 * 268/298
P2= 94.4 Psi
The substance that cannot be broken down into a simpler form by ordinary chemical means is called a __ ?
Answers
Answer:
Elements
Explanation:
An element is any substance that cannot be broken down into simpler form by ordinary chemical means.
Elements are distinct substances that cannot be split up into simpler substances. .
Such substances consist of only one kind of atom. There are over hundred elements known till date. Elements are made up of unique atoms. In a chemical reaction, elements combines and rearranges.
give reason unit of volume is a derived unit
Answers
Answer:
A derived unit is defined as the unit that is created from a product of SI base units. Volume is an example of derived unit because it is not possible to measure volume directly using any measuring device For eg., Volume of water in bucket is can not be measured using rule, or scale, or any other measuring device.
Hence, volume is a derived unit.
Now you will focus on a second hypothesis. This hypothesis can be very similar to the first, but this time you want to focus only on the second variable in question, speed. What could be a hypothesis that would illustrate the relationship between speed and kinetic energy? Use the format of "if…then…because…” when writing your hypothesis.
Answers
Answer:
If the mass of an object increases, then its kinetic energy will increase proportionally because mass and kinetic energy have a linear relationship when graphed.
Explanation:
is correct answer
Answer:
Sample Response: If the speed of an object increases, then its kinetic energy will increase proportionally because speed and kinetic energy have a linear relationship when graphed.
Explanation:
Compounds that are ductile and excellent conductors of electricity have *
covalent bonds.
ionic bonds.
isotopic bonds.
metallic bonds.
Answers
Answer:
metallic bonds.
Explanation:
Generally, compounds that are ductile and excellent conductor of electricity have metallic bonds between them.
These compounds are usually metals.
Metallic bond join that atoms of metals and alloys together. The formation of this type of bond is favored by large atomic radius, low ionization energy and a large number of electrons in their valence shell. The physical properties of metals like ductility, malleability, electrical and thermal conductivity all results from metallic bonds.If a sample of gas of valume 605 mL and temperature of 39 OC, has 0,00803 moles. What is it’s pressure?
Answers
Answer:
The pressure of the gas is 0.35 atm.
Explanation:
We can find the pressure of the gas by using the Ideal Gas Law:
[tex] P = \frac{nRT}{V} [/tex]
Where:
V: is the volume = 605 mL = 0.605 L
n: is the number of moles = 0.00803 moles
T: is the temperature = 39 °C = 312 K
R: is the gas constant = 0.082 L*atm/(K*mol)
Hence, the pressure is:
[tex] P = \frac{0.0083 moles*0.082 L*atm/(K*mol)*312 K}{0.605 L} = 0.35 atm [/tex]
Therefore, the pressure of the gas is 0.35 atm.
I hope it helps you!
El salmón percibe la presencia del 2-feniletanol (C5H5-CH2-CH2-OH) en el agua, en cantidades tan bajas como 0.03 mole en cien trillones (1*10^18) de litros de agua, ¿cuál es la masa, en gramos, de esa sustancia? ¿Qué cantidad de moléculas equivale a esa sustancia?
Answers
Answer:
3.66 g de 2-feniletanol (C5H5-CH2-CH2-OH)
1.8 * 10 ^ 22 moléculas
Explanation:
Sabemos que podemos obtener la masa de una sustancia a partir del número de moles presentes de la siguiente manera;
número de moles = masa / masa molar
masa molar de 2-feniletanol (C5H5-CH2-CH2-OH) = 122,16 g / mol
masa = 0.03 moles * 122.16 g / mol = 3.66 g de 2-feniletanol (C5H5-CH2-CH2-OH)
Si 1 mol = 6.02 * 10 ^ 23 moléculas
0.03 moles = 0.03 moles * 6.02 * 10 ^ 23 moléculas = 1.8 * 10 ^ 22 moléculas
what are alkenes and there chemical property
Answers
Answer:
Alkenes contain a double bond that is composed of one sigma and one pi bond between two carbon atoms. The sigma bond has similar properties to those found in alkanes , while the pi bond is more reactive. The carbon atoms in the double bond are sp² hybridized , forming a planar structure.
Explanation:
Believe it!!!
Does anyone know what I should put for number 2 if you KNOWW plssss
Answers
Is magnesium reacting with oxygen an exothermic reaction?
Answers
Answer:
is it a yes or no question
if it is yes
Explanation:
a clown in the park gave a child a balloon filled with 7.00 L of helium at 301 K. What will the volume of the balloon be when the child takes it into an air conditioned house at 295 K?
Answers
Answer:
6.9L
Explanation:
What patterns do you notice between the three maps? Using the concepts
you've learned in this lesson, construct an explanation for these patterns in your
Science Notebook or in the space below.
Answers
Answer:
A spatial pattern is a perceptual structure, placement, or arrangement of objects on Earth. It also includes the space in between those objects. Patterns may be recognized because of their arrangement; maybe in a line or by a clustering of points.
Explanation:
How many atoms of beryllium are equal to 0.39 moles of beryllium?
Answers
Answer:
2.35 x 10²³atoms
Explanation:
Given parameters:
Number of moles of Be = 0.39moles
Unknown:
Number of atoms = ?
Solution:
To solve this problem:
1 mole of a substance contains 6.02 x 10²³ atoms
0.39 mole of Be will contain 0.39 x 6.02 x 10²³ = 2.35 x 10²³atoms
Help!!!!
The diagram represents waves A,B,C, and D traveling in the same medium.Which two waves shown here have the same wavelength
Answers
Answer: A and C
Explanation: because wavelength is the distance over which the wave's shape repeats.
Wave A and wave C have the same wavelength as they have the same distance between the two adjacent crests or troughs. Therefore, option (2) is correct.
What are frequency and wavelength?The wavelength of the wave can be defined as the distance between consecutive adjacent points of the same phase on the wave. The separation between the two adjacent crests or troughs on a wave is known as wavelength.
The S.I. unit of the wavelength can be represented in meters. Wavelength is a characteristic of both standing waves and traveling waves, as well as other spatial wave patterns.
The frequency of the wave can be demonstrated as the number of oscillations of a wave in 1 second. The international S.I. units of the frequency can be represented as per second or Hertz.
The relationship between wavelength, speed of light (c), and frequency (ν) is: c = νλ
Therefore, wave A and wave B have the same wavelength in the given diagram.
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The temperature of the system is highest when it is a
A. gas
B. liquid
C. plasma
D. solid
Answers
Answer:
gas
Explanation:
its either gas or plasma but gas should be it bc liquid and solid are cold
A 1,600-milliliter bucket of paint is at a temperature of 70°F. Then the paint is divided equally into four smaller buckets. Each bucket is at 70°F before the paint is poured. The temperature of each bucket is about _____ the temperature of the original bucket of paint. a. The same as b.Four times c.One-fourth
Answers
Answer:
Same.
Explanation:
The temperature of each 400mL bucket is about the same as the temperature of the original bucket of paint.
This is because the temperature is an intrinsic property.This means that temperature is independent of the quantity of matter. Therefore, the temperature of paint inside the bucket is not dependent on the amount of paint present.
chemistry question help please
Answers
Answer:
xii. B. Smelting
xiii. D. Carbon
Explanation:
Smelting is known to be a process by which a metal is gotten. It is gotten either as the element or as a simple compound. This is obtained from metal's ore by heating. The heating can be done ordinarily in the presence of oxidizing agents, like air, or reducing agents, carbon e.g coke.
Zinc is gotten after Zinc oxide is heated in the presence of carbon.
This process is smelting.
Concentrated tetraoxosulphate acid is a strong dehydrating agent. It has the ability to char wood, paper, or sugar, leaving a carbonaceous residue. The charring effect is as a result of the carbon that is found in the wood.
The acid sucks in the oxygen and hydrogen, leaving behind the carbon; this results in the charring effect.
How the lead (II) carbonate can be separated and collected from the product mixture with ammonium nitrate?
Answers
Answer:
fgedhwkmgfvhcdnxj
Explanation:
gtryijdohuygfvbhgfy
Can someone help me plz!!!
Calculate the mass, in grams, of 2 moles of CaCl2.
Answers
Answer:
222.2 grams of CaCl2 in 2 moles
Explanation:
Mole=given mass/gram mass formula
2moles=x/Gram Mass Formula
(Gram Mass Formula of CaCl2):
Ca=40.1
Cl= 35.5 x 2= 71
-----------------------
GFM=111.1
2 moles = x/111.1 g
x=222.2
The role of an organism in its habitat
A. host
B. prey
C. niche
D. adaptation
Answers
Answer:
C. Niche
Explanation:
The role of an organism in it's habitat is it's niche.
Most of the volume of a gas is ______________________.
Group of answer choices
A. a vacuum
B. dark
C. gone
D. empty space
Please help!
Answers
Answer:
D. empty space
Explanation:
Most of the volume of a gas is empty space, which allows gases to be easily compressed. Gas particles are in constant motion, moving rapidly in straight paths. When gas particles collide, they rebound and travel in new directions. Every time they hit the walls of the container, they exert pressure.
How many molecules are equal to 10.35 g of pyridine?
Answers
Answer:
0.78× 10 ²³ molecules
Explanation:
Given data:
Mass of pyridine = 10.35 g
Number of molecules = ?
Solution:
Number of moles of pyridine:
Number of moles = mass/molar mass
Number of moles = 10.35 g/ 79.1 g/mol
Number of moles = 0.13 mol
Number of molecules;
1 mole contain 6.022× 10 ²³ molecules
0.13 mol × 6.022× 10 ²³ molecules / 1mol
0.78× 10 ²³ molecules
Brent is doing research to make a type of baby bottle out of plastic that is free from harmful chemicals. What type of research is this?
Applied
Descriptive
Quantitative
Experimental
Answers
Answer:
Applied
Explanation:
Since Brent is using his existing scientific knowledge to create a new product or invention then this falls under the category of Applied Research. Applied research includes using any theoretical or proven information in order to create something physical that can be used in our real-life world. Usually, this research focuses on solving a problem through the use of technology. Thisis exactly what Brent is trying to do by creating a new plastic that does not have harmful chemicals that can hurt babies in the long term.
Answer:applied
Explanation:
What is the molar mass of carbon?
Answers
15 points
5. CFC's
A. are short for chlorofluorocarbons
B. are man-made chemicals
C. attack the ozone layer
D. all of the above
Answers
Answer:
D. all of the above
Explanation:
it is short for chlorofluorocarbons,are man-made chemicals and attack the ozone.
What is the reactant(s) in the chemical equation below?
Answers
Answer:
C. 3CO(g) + Fe2O3(s)
Explanation:
The substance(s) to the hath left of the arrow in a chemical equation art hath called reactants. A reactant is a substance yond is presenteth at the starteth of a chemical reaction. The substance(s) to the right of the arrow art hath called products. A product is a substance yond is presenteth at the endeth of a chemical reaction
So in this example, 3CO(g) + Fe2O3(s) art the reactants.
The 2Fe(S) + 3CO2(G) art the products.
Desire I holp! Has't a most wondrous day!
Hope I helped! Have a great day!
PLEASE ANSWER ASAP!!!!!!!!!!!! The Relative Surface Gravity is 27.551 on _____.
Saturn
the Moon
the sun
Jupiter
Answers
Answer:
its the sun
Explanation: