Answer:
A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water. Salts are also formed in this reaction.
Explanation:
name and define the quantity represented by H
Answer:
Molar enthalpy change, the enthalpy change for one mole of a pure substance
Explanation: i think
Help please!! I’ll mark you brainliest!!
Answer:
a) should be an answer that is like "matches" or "equals" or "is equal to"
b) should be "conservation of mass"
c) can't be sure because I'd need to see the answer choices, but it should be a properly balanced chemical equation (one with the same number and type of atoms on both sides)
Explanation:
CAN SOMEONE HELP ME PLEASE Evaluate, using the measurements and observations in Figure 8, whether ethanol or butanol is the
better fuel for heating the water.
Include calculations in your answer.
Answer:
ethanol
Explanation:
The better fuel for heating the water is ethanol as it burned with a clean blue flame.
What are the different colors of flame?The color of a flame can be red, orange, blue, yellow, or white. When extra chemicals are added to the fuel burning, it affects the frequencies of visible light radiation emitted.
The temperature of a flame is shown by its color and bright blue and has a temperature of about 1670 K. The temperature will drop as the color changes from yellow to orange. The cooler flame is often red and also forms smoke. The color of the flame also depends upon the supply of oxygen gas that is required to burn.
As mentioned in the observations of the ethanol and butanol. The ethanol burns the clean blue flame while butanol burns with a yellow sooty flame.
Therefore, ethanol is a better fuel for heating water than butanol.
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#SPJ2
who invented the first compound microscope?
Answer:
Zacharias Janssen
Explanation:
Zacharias Janssen is known as the man who invented the compound microscope which is widely used today by most scientists all over the world.
The compound microscope was built in the 16th century during this period eyeglasses were just being introduceed to people all around.
Zacharias Jensen achieved this great feat with the help of his father Hans who was also anther great scientist, he mentored his son throughout the years and gave him the necessary skills and knowledge to produce the compound microscope.
PLEASEEE HELP ITS DUE SOON!
Answer:
The correct answer would be C) Support
which pair shares the same empirical formula. c2h2 and c6h6, c2h2 and c2h4, ch2 and c6h6, ch and c2h4
Answer:
Answer: CH₃ and C₂H₆ have same empirical formula.
Explanation:
it just compares in that it its the same
Answer:c2h2 and c6h6,
Explanation:
Which of the following pairs of elements will form covalent bonds with each other?
Answer:
sorry I don't know so sorry so sorry so sorry so sorry so sorry so
Explanation:
so sorry I don't know so sorry so sorry so sorry maybe I think quotation ki and bro mind we are
The students in Mrs. Jamison's class were conducting a lab experiment to determine the if temperature affected how fast 2 drops of food coloring mixed into water. They used frozen water, refrigerated water, room temperature water, and hot water. Which water allowed the food coloring to mix the fastest?
A) Hot water
B) Frozen water
C) Refrigerated water
D) Room temperature water
Answer:
A
Explanation:
A certain type of decorative lamp contains colored liquids. These liquids form globs that break off and rise to the top of the liquid. The globs rise due to____.
Answer:
The globs rises due to convection.
Explanation:
Convection is when warmer parts move to the top and the cooler parts move to the bottom. Since the globs are going to be warmer, they rise to the top.
Hope this helps :D
PLS HELP DECODE THIS
The element symbol for Potassium: (B2)
Answer:
It the letter K
Explanation:
Calculate the molar concentration of a solution containing 433 grams of C6H12O6 in 82 milliliters of water. The molar mass of C6H12O6 is 180.156 g/mol
Answer:
29.27M
Explanation:
Molar concentration can be calculated using the formula;
Molar concentration (molarity) = number of moles ÷ volume
Mole = mass ÷ molar mass
Where;
Molar Mass of glucose (C6H12O6) = 180.156g/mol
Mass = 433g
Mole = 433/180.156
Mole = 2.40moles
Volume = 82mL
Since 1L = 1000mL
82mL = 82/1000
= 0.082L
Molar conc. = 2.40mol/0.082L
Molar conc. = 29.27M
¿Qué elemento rompe la regla del carácter metálico?
Which element breaks the rule of metallic character?
Answer:
the machete
Explanation:
:)
Are plastics made of molecules with
simple structures or extended
structures? Explain.
Answer:
Explanation:
Plastics are made with very complex structures. That's why they turn black when burnt and why most things/bacteria cant break down plastic
6When the moon is between ___the Earth and the sun, a
appears.
A. Full Moon
b. New Moon
C. Quarter Moon
d. Gibbous moon
Answer:
B. New Moon!
Explanation:
New Moons are commonly seen as nearly or completely dark, this is because the rays of the sun completely overshadow the moon's "light," therefore making it appear dark.
Potassium chlorate is a white, crystalline solid. It can be broken down into potassium chloride (a salt)
and oxygen gas. For this chemical reaction write a:
a) Word equation
b) Skeletal equation (balanced)
Answer:
Notice that the number of atoms of
K
and
Cl
are the same on both sides, but the numbers of
O
atoms are not. There are 3
O
atoms on the the left side and 2 on the right. 3 and 2 are factors of 6, so add coefficients so that there are 6
O
atoms on both sides.
2KClO
3
(
s
)
+ heat
→
KCl(s)
+
3O
2
(
g
)
Now the
K
and
Cl
atoms are not balanced. There are 2 of each on the left and 1 of each on the right. Add a coefficient of 2 in front of
KCl
.
2KClO
3
(
s
)
+ heat
→
2KCl(s)
+
3O
2
(
g
)
The equation is now balanced with 2
K
atoms,
How many moles are there in 1.27 x 10^24 atoms of potassium
Answer:
Explanation:
We know that, 1 mole of any substance contain 6.022 X 10^23 atoms/molecules.
Thus, 6.022 X 10^23 atoms = 1 mole
Therefore, 1.29x10^24 =
= 2.14
Thus, 2.14 moles are present in 1.29x10^24 hydrogen atoms in HF.
Convection is the transfer of heat through the rising and sinking of a fluid. A student is constructing an explanation for how convection currents form in the mantle. Which statement would be most useful for the student to include in the explanation?
Answer:
Capilarity: the rise and fall of the convention currents heat in the mantle
Answer:
Earth's temperatures increase with depth.
Explanation:
because i just know
Blackboard chalk contains a certain percentage of calcium carbonate. If a 1.51 g piece of chalk produces 0.665 g of carbon dioxide, what percentage of calcium carbonate is chalk?
The percentage of Calcium carbonate in chalk = 100%
Further explanationGiven
1.51 g piece of chalk produces 0.665 g of carbon dioxide
Required
percentage of calcium carbonate
Solution
Reaction
CaCO3 (s) + 2 HCl (aq) → CaCl2 (aq) + H2O (l) + CO2 (g)
mol CO2 :
= 0.665 g : 44 g/mol
= 0.015
From the equation, mol CaCO3 = mol CO2 = 0.015
mass CaCO3 :
= mol x MW
= 0.015 x 100
= 1.5 g
I need Help Please !!!!!
Answer:
dang
Explanation:
dang that looks hard man, I wish I could help man but unfortunately I got ran over twice and got a concussion sorry man
Something used to power some devices.
Answer:
electricity
Explanation:
or maybe food
Unit 2 Test
What level of a food chain is most likely to have the most energy?
o producer
herbivore
consumer
decomposer
Answer:
the answer to this question is producer
What is the highest occupied energy level for an atom of copper (Cu)? *
Answer:
third energy level - 18
hope this helps
The Genetic Code
1. What would the codon sequence (s) be for:
a. Glycine ______________
b. Methionine ______________
2. What is the mRNA stop codon?
3. What are the m-RNA’s stop codons?
4. What amino acid sequence would be made from the mRNA sequence AGUGCGAUGCCG
5. What amino acid sequence would be made from the DNA sequence
CGTTATCGGACT
Answer:
a. GGG, GGC, GGA. GGU
B. AUG
2. UAA or UAG
3.UAA or UAG
4.Serine-Alanine-Methoionine-Proline
5.Arginine-Isolucine- Proline-Theorine
Explanation:
Sorry if I'm wrong
Hope this Helps!
1) Solution
a. GGG, GGC, GGA, GGU
b. AUG
2) Solution
UAA or UAG
3) Solution
UAA or UAG
4) Solution
Serine-Alanine-Methoionine-Proline
5) Solution
Arginine-Isolucine- Proline-Theorine
what is a compound?
Answer:
NOUN
a thing that is composed of two or more separate elements; a mixture
Explanation:
basically a mixture
Please help me I need this done for today, please show your work on paper as well the answers for me to understand and copy.
3. Charles Law: What is the volume of the air in a Helium balloon that has 135 mL at 67.6 degrees
Fahrenheit if the temperature is raised to 100. degrees Fahrenheit?
Answer:
199.7mL
Explanation:
Using Charles law equation as follows:
V1/T1 = V2/T2
Where;
V1 = initial volume (mL)
T1 = initial temperature (°F)
V2 = final volume (mL)
T2 = final temperature (°F)
According to the information provided in this question, V1 = 135mL, V2 = ?, T1 = 67.6°F, T2 = 100°F
Using V1/T1 = V2/T2
135/67.6 = V2/100
Cross multiply
135 × 100 = 67.6 × V2
13500 = 67.6V2
V2 = 13500/67.6
V2 = 199.704
The new volume in the air in the helium ballon is 199.7mL.
Answer:
199.7mlexplain;
math
Which of the following would NOT be an example of a chemical change
Yeast produces carbon dioxide gas to make dough rise.
Two white liquids mix together to create a pink solid
Lighting a fire to keep warm.
Sugar is dissolved into tea to make it taste sweeter.
Answer:
D. Sugar is dissolved into tea to make it taste sweeter.
Explanation:
it is a physical change
How is atom important to all living and non-living things
Answer:
Atoms are extremely important structures that make up all of the materials on earth.
Explanation:
Atoms are in our bodies and they bond together to form molecules, which make up matter.
Answer:
Explanation:
[like living things non-living things have properties that u can see such as color,hardness,or softness]
[living things and non-living things are made of small particles called atoms]
ATOM made up everything that takes up space
PLEASE HELP ME what happened to the green trait in mendel's pea plants
Answer:
Mendel's gene involved in pea color decides whether the chlorophyll in the pea will be broken down or degraded. When this gene isn't working, the chlorophyll stays around and the pea is green. So in this case the recessive trait is indeed due to a broken gene.
Explanation:
The green trait in Mendel's pea plants should be involved is considered to be pea color.
Green trait in Mendel's pea plants:Mendel's gene included in pea color that the chlorophyll should be in the pea and the same should be split down or degraded.
Also when the gene should not be working so here chlorophyll should stays around and the pea should be green.
In this case, the recessive trait for indeed because of the broken gene.
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which pair will for an ionic compound
Answer: A pair of elements will most likely form an ionic bond if one is a metal and one is a nonmetal. These types of ionic compounds are composed of monatomic cations and anions.
Explanation:
A pair of elements will most likely form an ionic bond if one is a metal and one is a nonmetal. These types of ionic compounds are composed of monatomic cations and anions.
Explanation:
The chart below shows monatomic ions formed when an atom loses or gains one or more electrons, and the ionic compounds they form. You can check your periodic table to see that the cations are monatomic ions formed from metals, and the anions are monatomic ions formed from nonmetals.