Answer:
2 Hydrogen atoms and 1 Oxygen atoms makes water
Explanation:
Hope this helps^^
Answer: Its chemical formula H2O, indicates that each of its molecules contains one oxygen and two hydrogen atoms,
Explanation: i hopes it helps :)
4. Explain error and how it can impact your results from an experiment
Random errors will shift each measurement from its true value by a random amount and in a random direction. These will affect reliability (since they're random) but may not affect the overall accuracy of a result.
When a spoonful of salt is dissolved in a pan filled with water, the water is called the...
Select one:
a. solute.
b. solution.
c. solvate.
d. solvent.
Answer:
water is called solvent
Answer:
Option d (solvent)
Explanation:
In salt solution, salt is the solute. A solvent is the substance that does the dissolving – it dissolves the solute. In salt solution, water is the solvent
What is water supply ?
Answer:
a water suppley is water that pepople buy to dreak and ues
Explanation:
Which of the following particles are found in the nucleus of an atom? (Select all that apply).electronsprotonsneutronscompounds
Answer:
protons and neutrons
Explanation:
Neutrons and protons are the particles that are found in the nucleus of an atom.
What are protons and neutrons?Protons and neutrons are subatomic particles. They are present in the nucleus of an atom and constitute most of the mass of the atom. There are three kinds of subatomic particles that are present in an atom.
These are -
Electrons: Electrons are negatively charged particles. These are present in the atomic shells of the atom. The number of electrons in the last shell of the atom constitutes the valency of the atom. Protons: Protons are positively charged particles. These are present in the nucleus of the atom.Neutrons: Neutrons are neutral molecules with no charge. These are also present in the nucleus of the atom.Since most of the mass of the atom, in the form of protons and neutrons, is present in the nucleus, the mass number is denoted as the sum of the number of protons and neutrons. Protons and neutrons together are sometimes also called nucleons.
Therefore, neutrons and protons are present in the nucleus of an atom.
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which group of elements would react with lithium
Explanation:
lithium has group 1 elements and it valance electron has 1
so it more react with group 7 to be more stable
hello can anyone help?
Potassium, K, forms a compound with fluorine, F
Which statements about this compound are correct?
1) The compound is ionic.
2) The formula of the compound is KF.
3) The compound is soluble in water.
A) 1 2 and 3
B) 1 and 2 only.
C) 1 and 3 only
D) 2 and 3 only
Answer:
A ) 1, 2 and 3
Explanation:
1 ) is correct because,
K donates 1 electron
F gain 1 electron from K.
If donating and gaining of electrons takes place between two electron, then type of compound formed is ionic.
2 ) is correct because,
K + F -----> KF
3 ) is correct because,
KF is soluble in cold water; very soluble in hot water.
How many cc of methane at not is required to react completely with 20cc of oxygen? Please helps meee!
Answer:22.4 L methane reacts with 44.8 L of oxygen to give 22.4 L of CO
2 and 44.8 L of water.
Explanation:
Ammonium sulphate + __________________ potassium sulfate + ammonia + water
Please fill in the blank.
Answer:
Potassium Hydroxide Solution =
or
Potassium Hydroxide =
Since we know the products and one of the reactions, we can work backward to discover what the other reactant may be.
As it is in the question, we can map the reactants and product:
Reactants Product
Ammonium Ammonia
Sulfate Sulfate
________ Potassium
________ Water
Since the reaction will yield Potassium and water, the likely reactant is Potassium Hydroxide (KOH). This is because we know that Ammonium lost a Hydrogen atom that could combine with the Hydroxide radical to form water.
This becomes clear when we consider the net ionic equation:
Ammonium sulphate + Potassium Hydroxide → potassium sulfate + ammonia + water
if we write this a balanced chemical equation:
(NH₄)₂SO₄ + 2KOH → K₂SO₄ + 2NH₃ + 2H₂O
if we write the reaction as an ionic equation
2NH₄⁺ + SO₄⁻ + 2K⁺ + 2OH⁻ → 2K⁺ + SO₄⁻ + 2NH₃ + 2H₂O
if we remove the ions that appear on both the reactant and product side (spectator ions)
2NH₄⁺ + 2OH⁻ → + 2NH₃ + 2H₂OAll live things (plants included) must turn food into _________ that can be used (___________), and then release waste products.
Earth science!
Answer:
I think it is
1. energy
2. respiration
Identify the name of the ionic compound with the formula MgS. Group of answer choices magnesium sulfide magnesium sulfite magnesium sulfate magnesium sulfur
MgS → Mg²⁺ + S²⁻
S²⁻ is known as the sulfide ion. That makes MgS Magnesium Sulfide.
For consideration:
magnesium sulfide MgS
magnesium sulfite MgSO₃
magnesium sulfate MgSO₄
magnesium sulfur Mg & S
Magnesium sulfide is an inorganic compound with the formula MgS.
What is Magnesium sulfideMagnesium sulfide (MgS) is an concerning ancient culture compound made by the consolidation of magnesium (Mg) cations and sulfide (S2-) anions. It is calm of individual magnesium ion (Mg2+) and individual sulfide ion (S2-).
In the formation of magnesium sulfide, magnesium drops two electrons to solve a constant eight of something configuration, making a absolutely loaded magnesium ion (Mg2+). Sulfur, in another way, gains two electrons to complete its outer energized matter structure, happening in a negatively loaded sulfide ion (S2-).
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A gas has a volume of 275 mL and a pressure of 3 atm. What is the new volume if the pressure decreases to 1.8 atm?
Answer:
Use Boyles law.
Given:
P1=3atm
V1=275mL
P2=1.8atm
V2=?
P1V1=P2V2
3x275=1.8xV2
V2=3x275/1.8
V2=458.3mL
use of chemical substance in our daily life their advantages and disadvantages
Answer:
Explanation:
By observing chemical reactions, we are able to understand and explain how the natural world works. Chemical reactions turn food into fuel for your body, make fireworks explode, cause food to change when it is cooked, make soap remove grime, and much more.
The electronic configuration of an element is given below.
Element 1: 1s22s22p4
Which statement about the reactivity of the element is true?
It is reactive because it has to gain an electron to have a full outermost energy level.
It is unreactive because it has to lose an electron to have a full outermost energy level.
It is reactive because it has to gain two electrons to have a full outermost energy level.
It is unreactive because it has to gain two electrons to have a full outermost energy level.
Answer:
It is reactive because it has to gain an electron to have a full outermost energy level.
Explanation:
Answer:
A
Explanation:
what is the number of neutron in an atom of 86Kr
Answer:50
Explanation:
Kr has 36 protons because that is its atomic number. Simple subtraction from the given AMU gets 50 protons. ([tex]86-36=50[/tex])
Answer:
Neutron Number (N) 50
(I think)
How would one convert 6 pounds to ounces (16 oz = 1b)?
Answer:
D.
Explanation:
I just got it right in the test :)
Which gases are needed for animal and plant respiration? Select two options. FAST ITS TIMED
oxygen
nitrogen
carbon dioxide
neon
carbon
It takes 40 mL of 0.10 M of hydrochloric acid (HCl) to neutralize 50 mL of sodium hydroxide (NaOH) for the following chemical reaction
HCl + NaOH → NaCl + H2O
The concentration of sodium hydroxide is _____.
0.125 M
0.08 M
0.10 M
0.04 M
Answer:
0.08 M
Explanation:
here...
1. water and a salt
2. Magnesium hydroxide reacts with HCl to produce a solution that is neutral.
3. titrant
4. 0.08 M
5. indicator
{quizlet: captncrun}
The concentration of sodium hydroxide is 0.08 M. The correct option is the second option 0.08 M
From the question,
We are to determine the concentration of sodium hydroxide
The given reaction is
HCl + NaOH → NaCl + H₂O
This means
1 mole of HCl is required to completely neutralize 1 mole of NaOH
To determine the concentration of sodium hydroxide,
We will use the formula
[tex]\frac{C_{A}V_{A} }{C_{B}V_{B}} = \frac{n_{A}}{n_{B}}[/tex]
Where
[tex]C_{A}[/tex] is the concentration of acid
[tex]C_{B}[/tex] is the concentration of base
[tex]V_{A}[/tex] is the volume of acid
[tex]V_{B}[/tex] is the volume of base
[tex]n_{A}[/tex] is the mole ratio of acid
[tex]n_{B}[/tex] is the mole ratio of base
From the give information
[tex]C_{A} = 0.10 \ M[/tex]
[tex]V_{A} = 40 \ mL[/tex]
[tex]V_{B} = 50 \ mL[/tex]
From the balanced chemical equation
[tex]n_{A} = 1[/tex]
[tex]n_{B} = 1[/tex]
Putting the above parameters into the formula, we get
[tex]\frac{0.10 \times 40}{C_{B} \times 50} = \frac{1}{1}[/tex]
Then
[tex]C_{B} \times 50 = 0.10 \times 40[/tex]
∴ [tex]C_{B}=\frac{0.1 \times 40}{50}[/tex]
[tex]C_{B}=\frac{4}{50}[/tex]
[tex]C_{B}=0.08[/tex]
Hence, the concentration of sodium hydroxide is 0.08 M. The correct option is the second option 0.08 M
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I need a catchphrase for the element Boron as a superhero describing its traits!
How many moles of Oz would be required to generate 13.0 mol of NO2
in the reaction below assuming the reaction has only 74.1% yield?
2 NO (g) + O2 (g) → 2 NO2 (g)
Answer:32
Explanation:
Have a nice day :)
show your work
5.62m =_______ cm
5310mL=_______L
85mg=_______g
2.54L=_______mL
455g= _______kg
5500mm=_________m
0.00045 m=_________cm
Answer:
5.62•100=562cm
5310mL/1000=5.310L
85mg/1000=0.085g
2.54L•1000=2540mL
455g/1000=0.455kg
5500mm/1000=5.500m
0.00045m•100=0.045cm
Explanation:Whenever the units increase, you divide. (LLS)
Whenever the units decrease, you multiply. (SSL)
If a tissue needs its cells to communicate regularly, then ______ will be most prevalent [occur most often)
O desmosomic junctions
O tight junctions
O gap junctions
O con junctions
There are many different ways that cells can connect to each other. The three main ways for cells to connect with each other are: gap junctions, tight junctions, and desmosomes. These types of junctions have different purposes, and are found in different places.
Building Vocabulary
Match each term with its definition by writing the letter of the correct definition on
the line beside the term in the left column.
5. nucleus
6. proton
D
7. neutron
c.
8. electron
9. atomic number
10. isotopes
a. the sum of protons and neutrons in the nucleus of an
atom
b. the very small center core of an atom
atoms of the same element that differ in the number
of neutrons, but have the same number of protons
d. the particle of an atom that moves rapidly in the
space outside the nucleus
a specific amount of energy related to the movement
of electrons in atoms
f. the particle of an atom with a positive charge
g. the number of protons in the nucleus of every atom
of an element
h. the particle of an atom that is neutral
11. mass number
e.
12. energy level
a
Answer:
Explanation:
Building Vocabulary
Match each term with its definition by writing the letter of the correct definition on
the line beside the term in the left column.
5. nucleus b
6. proton f
7. neutron h
8. electron d
9. atomic number g
10. isotopes c
11. mass number a
12. energy level e
a. the sum of protons and neutrons in the nucleus of an
atom
b. the very small center core of an atom
c. atoms of the same element that differ in the number
of neutrons, but have the same number of protons
d. the particle of an atom that moves rapidly in the
space outside the nucleus
e. a specific amount of energy related to the movement
of electrons in atoms
f. the particle of an atom with a positive charge
g. the number of protons in the nucleus of every atom
of an element
h. the particle of an atom that is neutral
-. mass number a.
12. energy level e
Which of the following is the best definition of a chemical change?
A. All of these
B. The ability of something to undergo a change or reaction.
C. Something that can be observed or measured without changing the identity of the substance.
D. A change that alters the identity, or chemical composition, of a substance at the atomic level.
Answer:A
Explanation:
Arrange in the correct order of occurrence. Write 1 – 5 for each statement.
___ Magma cools and sinks.
___ Rocks are heated and melt.
___ Magma expands and rises at divergent boundaries.
___ Some magma move sideways in opposite directions.
___ Subduction in convergent boundaries make plates to reach the mantle
Answer:
Explanation:Rocks are heated and melt.
Some magma move sideways in opposite directions.Magma cools and sinks.Magma expands and rises at divergent boundaries.Magma expands and rises at divergent boundaries.
Someone pls help me I will make you brain
Answer:
A
Explanation:
I talked about it in Economic Geography and Earth Science, I rememBer this
What is the most abundant type of protein in egg white? What do you think its purpose is?
Answer: Ovalbumin (Albumin)
Explanation:
The albumen (egg white) is composed of almost 60% of the protein ovalbumin. It's the main source of proteins for tissue synthesis in the embryo. It acts as a storage protein, storing ions and amino acids necessary for embryonic development.
There are four different proteins present in egg white. In which the most abundant protein is ovalbumin present in 54 %.
What are proteins?Proteins are biomolecules very essential for life. Proteins are made of a number of amino acids. Amino acids join together to form peptides and large number of peptides constitute a protein.
Essential amino acids have to be up taken from diet and non-essential will be produced inside the body.
Proteins are the major substances to build up our body. There are essential and non essential amino acids. Nails and hair are made of keratin protein. Milk contains the protein called lactine.
Similarly the protein in curd is casein. The proteins in egg white are ovalbumin, ovotransferrin, ovomucin and ovomucoid. In which ovalbumin is most abundant.
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what is the wavelength of an X-ray having a frequency of 4.80 x 1017 Hz
Answer:
Refer to the attachment
is a skateboard matter or no matter
Answer:
it is matter cus everything is made up of matter
Explanation:
Answer: yes
Explanation:
Matter makes up everything
Someone pls help me I will make you brain
Answer:
a
Explanation:
i took test
Using the periodic table, complete the ya me to describe each atom. Type in your answers.
Answer:
Explanation:
Using the periodic table, complete the table to describe each atom. Type in your answers. - 14514242.
