ANSWER - 6 MOLES OF IRON
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(1)
One moles of Fe2O3 forming 2 moles of Fe
3 moles of Fe2O3 will form 2×3 = 6 moles of iron
a gas mixture containing hydrogen, oxygen, and nitrogen has a total pressure of 840 torr. if p hydrogen = 320 torr and p oxygen = 485 torr, what is the partial pressure of nitrogen in the mixture? please help
Answer
35 torr
Explanation:
The mixture contains 320 torr of hydrogen, 485 torr of oxygen, a total pressure of 840 torr, so you need to find the leftover
320(hydrogen) + 485(oxygen) = 805 torr
840(total) - 805 = 35 torr
how are the environment of a desert and a tundra different
A: A tundra is at a higher latitude than a desert
B: A tundra is less humid than a desert
C: A tundra is much humid than a desert
D: A tundra receives less precipitation than a desert
<FIRST ANSWER>
The answer is A; tundra is at a higher latitude than a desert
Explanation:
Both a tundra and a desert are very dry, so that eliminates B and C.
And as for D, Tundra receives more rain than a desert does, so that eliminates D.
how can you use the information from the sim to respond to the forum user?Please help
Answer:
The forum user pointed out that energy began transferring into the lake as ... How can you use the information from the Sim to respond to the blogger
Explanation:
What volume will 8.47 kg of sulfur dioxide gas occupy at a pressure of 89.4 kPa and a temperature
of 40.0 °C?
Answer:
let me know if it is right:)
and I hope it make sense
how are molarity and volume related
these are the options
A They are directly related.
B They are inversely related.
C They are different units of dilution.
D They are different units of concentration.
Answer:
Molarity can be used to calculate the volume of solvent or the amount of solute. The relationship between two solutions with the same amount of moles of solute can be represented by the formula c1V1 = c2V2, where c is concentration and V is volume.
The relationship between Molarity and volume of a solution is : ( B ) They are inversely related
What is molarity ?Molarity is the number of moles of solute in unit of volume of the solution ( usually per liter ). Molarity is calculated by dividing the number of moles of a solute ( n ) by the volume of the solution.
Molarity = n / v .
Therefore we can conclude that the relationship between Molarity and volume is that they are inversely related.
Learn more about Molarity : https://brainly.com/question/17138838
What would a chemist likely study about a car?
A) The amount of rotations of the wheel that occur in 1 mile.
B) The reaction of gasoline combustion in the engine.
C) The accuracy of the speedometer.
D) The strength of the car frame.
Answer
b b b b b b b b b b b b b b b
Explanation:
How many atoms of hydrogen are present in a container of water if you have 1.50 x 1023 atoms of oxygen present?
Answer:
3.00 × 10²³ atoms H
Explanation:
Step 1: Given data
Atoms of oxygen in water: 1.50 × 10²³ atomsChemical formula of water: H₂OStep 2: Calculate the number of atoms of hydrogen
According to the chemical formula of water, the atom ratio of H to O is 2:1.
1.50 × 10²³ atoms O × 2 atoms H/1 atom O = 3.00 × 10²³ atoms H
what is the hardest metal?
1. Cesium
2. Titanium
3. Chromium
4. Magnesium
Quickly please!
Answer:
i believe it is titanium.
Explanation:
Answer:
2. Chromium
Explanation:
AYUDENME A CONTESTAR ESTO
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umm how do you begin answering that ??
what Element has a -4 oxidation number.
How many molecules of HCl are needed to react with 1.7 moles of magnesium. The products of
the reaction are magnesium chloride and hydrogen gas.
2HCl + Mg --> MgCl2 + H2
(pls help)
Answer:
2.05 x 10²⁴ molecules
Explanation:
The balanced equation for the chemical reaction is the following:
2 HCl + Mg → MgCl₂ + H₂
According to the equation, 2 moles of HCl are required to react with 1 mol of magnesium (Mg), so the moles of HCl required to react with 1.7 mol Mg are calculated as follows:
moles HCl = 1.7 mol Mg x 2 mol HCl/mol Mg = 3.4 mol HCl
We know that 1 mol of any compound is equal to 6.022 x 10²³ molecular entities, so we convert the moles of HCl to molecules as follows:
molecules HCl = 3.4 mol HCl x 6.022 x 10²³ molecules/1 mol = 2.05 x 10²⁴ molecules
how to deal with gender based violence as an individual
Answer:
Raise awareness of the dangers of harmful traditions. ...
Tackle violence against girls in school. ...
Challenge and speak out about violence in the home. ...
Transform attitudes towards harmful practices at multiple levels. ...
Listen to girls' experiences of violence - and their solutions.
what pressure must be applied to compress a gas from 85 L at 3.5 atm to 15 L? a-17.3atm b-24.7atm c-19.8atm d-21.4atm
Both potassium chloride and calcium carbonate are white solids. Give two tests you would use to distinguish them.
Answer:
Potassium carbonate is soluble in water, while calcium carbonate is insoluble. Weigh a sample of the unknown mixture accurately and stir the sample with water. Filter the suspension and find out the mass of the residue collected. It gives the amount of insoluble calcium carbonate present in the mixture.
Explanation:
seperate red and blue ink plzz answer this
Which of the following elements is used to make metal products?
oxygen
potassium
calcium
iron
Its Iron and Potassium because if you look at the periodic table,and you go down the list of metals, you can see what metals are there.
If 11 kJ of heat is transferred to 2300 g of soil at 21°C, what would the new temperature of the soil be?
Answer:
26.98°C
Explanation:
Applying,
Q = cm(t₂-t₁)................ Equation 1
Where Q = Heat transferred to the soil, c = specific heat capacity of dry soil, m = mass of the soil, t₂ = final temperature, t₁ = initial temperature.
From the question,
Given: Q = 11 kJ = 11000 J, m = 2300 g = 2.3 kg, t₁ = 21°C
Constant: c = 800 J/kg.°C
Substitute these values into equation 1
11000 = 800×2.3(t₂-21)
Solving for t₂
t₂-21 = 11000/(800×2.3)
t₂-21 = 11000/1840
t₂-21 = 5.98
t₂ = 5.98+21
t₂ = 26.98°C
In a titration of hydrobromic acid (HBr) against sodium hydroxide (NaOH), 22.20 mL of 0.150 M NaOH is required to neutralize 36.60 mL of HBr. Calculate the molarity of the HBr. M1V1=M2V2
Answer:
[HBr] = 0.0910 M
Explanation:
NaOH → Strong base
HBr → Strong acid.
This is a titration that involves a strong acid and a strong base, so the recaction is about acid base equilibrium.
Formula for titration in the equivalence point is:
mmoles of acid = mmoles of base
M . Volume of acid = M . volume of base
We replace data:
M . 36.60 mL = 0.150 M . 22.20 mL
M = (0.150 M . 22.20 mL) / 36.60 mL
M = 0.0910 mol/L
What is the state symbol of oxygen at room temperature
Answer: Oxygen is a gas at room temperature.
What would a chemist most likely study about a car? 1- The amount of rotations of the wheel that occur in 1 mile. 2- The reaction of gasoline combustion in the engine. 3- The accuracy of the speedometer. 4- The strength of the car frame.
Answer:
b
Explanation:
e2020
Answer:B
Explanation:It was correct
What does fr stand for on the periodic table
Answer:
"Francium"
Explanation:
"Francium" is a chemical element with the symbol "Fr" and the atomic number "87". Classified as an "alkali metal", Francium is a solid at room temperature.
Atomic Mass: "223.01973u"
Year Discovered: "1939"
how many elements have been discovered so far by scientists
Answer:
118 elements have been discovered so far
Explanation:
How many molecules are in 4 moles of carbon monoxide (CO)?
Select one:
a. 2.41x1024 CO molecules
b. 24.1x1023 CO molecules
c. 6.64x1024 CO molecules
d. 1.51x1023 CO molecules
Answer:
A
Explanation:
because number of particle = moles × 6.02 × 10^23
which gives the answer as an A
2.41x10²⁴ molecules are in 4 moles of carbon monoxide (CO). Therefore, the correct option is option A.
What is molecule?The smallest recognizable unit into that a pure substance may be divided while retaining its composition as well as chemical properties is a molecule, which is a collection of atoms that are at least two in number. Until parts made up of a single molecule are reached, the division of an example of a substance smaller progressively smaller parts does not result in a change with regard to its composition nor its chemical properties.
Still smaller sections of the substance are produced by further subdivision, and these components are always different chemically and typically have different compositions from the initial substance. The chemical links that link the atoms in the molecule together are severed during this final step of fragmentation.
molecules = moles × 6.022×10²³
= 2.41x10²⁴
Therefore, the correct option is option A.
To know more about molecule, here:
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Give the number of protons and neutrons in the nucleus of an atom of each of the following isotopes, and the number of electrons in a neutral atom of that isotope:
a. copper-65
b. helium-4
c. cobalt-60
d. nitrogen-15
Answer:
The development of modern atomic theory revealed much about the inner structure of atoms. It was learned that an atom contains a very small nucleus composed of positively charged protons and uncharged neutrons, surrounded by a much larger volume of space containing negatively charged electrons. The nucleus contains the majority of an atom’s mass because protons and neutrons are much heavier than electrons, whereas electrons occupy almost all of an atom’s volume. The diameter of an atom is on the order of 10−10 m, whereas the diameter of the nucleus is roughly 10−15 m—about 100,000 times smaller. For a perspective about their relative sizes, consider this: If the nucleus were the size of a blueberry, the atom would be about the size of a football stadium (Figure 1).
Figure 1. If an atom could be expanded to the size of a football stadium, the nucleus would be the size of a single blueberry. (credit middle: modification of work by “babyknight”/Wikimedia Commons; credit right: modification of work by Paxson Woelber)
Atoms—and the protons, neutrons, and electrons that compose them—are extremely small. For example, a carbon atom weighs less than 2 × 10−23 g, and an electron has a charge of less than 2 × 10−19 C (coulomb). When describing the properties of tiny objects such as atoms, we use appropriately small units of measure, such as the atomic mass unit (amu) and the fundamental unit of charge (e). The amu was originally defined based on hydrogen, the lightest element, then later in terms of oxygen. Since 1961, it has been defined with regard to the most abundant isotope of carbon, atoms of which are assigned masses of exactly 12 amu. (This isotope is known as “carbon-12” as will be discussed later in this module.) Thus, one amu is exactly 112112 of the mass of one carbon-12 atom: 1 amu = 1.6605 × 10−24 g. (The Dalton (Da) and the unified atomic mass unit (u) are alternative units that are equivalent to the amu.) The fundamental unit of charge (also called the elementary charge) equals the magnitude of the charge of an electron (e) with e = 1.602 × 10−19 C.
A proton has a mass of 1.0073 amu and a charge of 1+. A neutron is a slightly heavier particle with a mass 1.0087 amu and a charge of zero; as its name suggests, it is neutral. The electron has a charge of 1− and is a much lighter particle with a mass of about 0.00055 amu (it would take about 1800 electrons to equal the mass of one proton. The properties of these fundamental particles are summarized in Table 3. (An observant student might notice that the sum of an atom’s subatomic particles does not equal the atom’s actual mass: The total mass of six protons, six neutrons, and six electrons is 12.0993 amu, slightly larger than 12.00 amu. This “missing” mass is known as the mass defect, and you will learn about it in the chapter on nuclear chemistry.)
What is Williamson's synthesis?
Answer:
The name of the reaction was coined after Alexander William Williamson developed it in 1850.Williamson Ether Synthesis is a reaction that uses deprotonated alcohol and an organohalide to form an ether. 1. Williamson Ether Synthesis usually takes place as an SN2 reaction of a primary alkyl halide with an alkoxide ion.
Explanation:
yeah
Pls answer ill give brainliest question in picture
Answer: A & D
Explanation:
The two main forces are temperature and salinity.
Why do you think there was a rush to mass-produce penicillin around the time of World War II?
Answer:
penicillin could protect mice against infection from deadly Streptococci.
Explanation:
Answer:
In 1940, Florey carried out vital experiments, showing that penicillin could protect mice against infection from deadly Streptococci.
What is 25 Ml into L
Answer:
0.025 liters
Explanation:
divide 25 into 1000
Answer:
25 mL = 0.025 L
Explanation:
edge 2023
Someone help me am i right or wrong
Answer:
You right!
Explanation:
Answer: Yes your right
Which type of substance ionizes partially and gives off hydrogen ions when dissolved in
water? (5 points)
Weak base
weak acid
Strong acid
Strong base
Answer:
strong acid
Explanation: