Answer:
The pressure in atm is 6.04 x 10^-3
Explanation:
Pressure of the gas is defined as the force exerted by the particles on the walls of the container. It is expressed in various terms like 'mmHg', 'atm', 'kiloPascals' etc..
All these units of pressure are inter convertible.
Pressure of the gas = 4.59 mm Hg
760 mm Hg = 1 atm
4.59 mm Hg= 1/760 x 4.59 = 6.04 x 10^-3atm
The pressure in atm is 6.04 x 10^-3
salat tarawih itu boleh dilakukan di masjis
hey pleaseeeeeeeeeeeeeeeeeeeeeeee
Answer: B
Explanation:
Answer:
b
Explanation:
A solution of pH 7 has
Group of answer choices
the same concentration of H+ and OH‑
more OH- than H+
no H+ and no OH-
more H+ than OH-
Answer: same concentration
Explanation:
H+ makes it more acidic, OH- makes is more basic. 7 is neutral so it has the same amount of both.
How many molecules are in 1.56 moles of NaCl?
Answer:
9.39432 x10^23
Explanation:
no of particles = moles * avogradros no
=> 1.56 * 6.022 x10^23
= 9.39432 x10^23
Please helppppppppppppppppppp
50 ppoints
Answer:
I can’t see the whole page
Explanation:
i need a short paragraph (about two sentences) describing the geologic time scale.
The geologic time scale is the “calendar” for events in Earth history. It subdivides all time into named units of abstract time called—in descending order of duration—eons, eras, periods, epochs, and ages.
HELP ME PLEASE (brainliest)
Answer: i would say D or the last one.
Explanation: According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants. The law of conservation of mass is useful for a number of calculations and can be used to solve for unknown masses, such the amount of gas consumed or produced during a reaction.
Hope this helps :) Can u plz mark me branliest
Refer to the following balanced equation in which ammonia reacts with nitrogen monoxide to produce nitrogen and water.
4NH3(g) + 6NO(g) -> 5N2(g) + 6H2O(l)
How many moles of NH3 are necessary to produce 0.824 mol N2?
___mol NH3
(Note the question must be answered with three significant figures)
Answer: 0.659 mol
Explanation:
From the equation, we can tell that for every 4 moles of ammonia consumed, 5 moles of nitrogen are produced.
This means the answer is 0.824(4/5)=0.659 mol
The products of a chemical reaction are chemically different substances than the reactants of a chemical reaction.
True or false?
this statement is true
Answer:
Hope it helps u
Which of the following is the correct calculation for determining the density of an object with a mass of 54 g and a volume of 6mL
Answer:
d=m/v=9
Explanation:
A block of concrete has a mass of 5100 g and a volume of 2500 cm3 . Calculate the density.
Answer:
2.04 g/cm3
Explanation:
Density = mass ÷ volume
= 5100 ÷ 2500
=2.04 g/cm3
In a lab, a scientist calculate he should produce 12.3 grams of product in his experiment. When he is finished collecting his product it weighs 11.0 grams. What is his percent yield?
Answer:
Option D.
Explanation:
Percentage yield = Actual yield / Theoretical yield * 100%
Actual yield = 11.0 grams
Theoretical yield = 12.3 grams
Percentage yield = 11.0 / 12.3 * 100
Percentage yield = 89.43%
What is the atomic number of the following element??
Answer:
91
Explanation:
Hey I'm Chloe can you Help me, Thank you :)
How does photosynthesis use solar energy?
Answer:
Photosynthesis in plants converts solar energy into chemical energy using electrons and protons from water.
Explanation:
Does anyone know the ones that are blank
Answer:
yeah whats it asking for
Explanation:
Given the equation Ca + H2O --> Ca(OH)2 + H2 how many grams of calcium will react completely with 10.0 grams of water? *
Answer: 11.0 g of calcium will react with 10.0 grams of water.
Explanation:
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}[/tex]
moles of [tex]H_2O[/tex]
[tex]\text{Number of moles}=\frac{10.0g}{18g/mol}=0.55moles[/tex]
The balanced chemical equation is:
[tex]Ca+2H_2O\rightarrow Ca(OH)_2+H_2[/tex]
According to stoichiometry :
2 moles of [tex]H_2O[/tex] require = 1 mole of [tex]Ca[/tex]
Thus 0.55 moles of [tex]H_2O[/tex] require=[tex]\frac{1}{2}\times 0.55=0.275moles[/tex] of [tex]Ca[/tex]
Mass of [tex]Ca=moles\times {\text {Molar mass}}=0.275moles\times 40g/mol=11g[/tex]
Thus 11.0 g of calcium will react with 10.0 grams of water.
you want 200 mL of a 0.1 g/mL solution of sugar. how do you prepare the solution?
How is bond polarity determined?
Answer:
Explanation:
Are you a gril or boy
Explanation:
you use it yo determine the polarity of a covalent bond using numerical means find the difference between the electron gravity of atoms ; if the result is between 0.4 and 1.7 then generally the bond is polar covalent . pls follow and mark brainliantest
I NEED HELP PLS PLS PLS
Jayden says that the dentist can shine a special light on his teeth that will make his teeth become whiter. Can light change Jayden’s teeth?
Answer:
No
Explanation:
This is because light cannot not whiten Jayden's teeth but light can change materials by hearing it up. There are some substances or tooth paste that can be use to whiten the teeth because of the content they are made off which whitens the teeth. Some of it include baking soda, hydrogen peroxide toothpaste, tumeric toothpaste, toothpaste that contain fluoride.
4) How many atoms are present in a sample of oxygen, O2 with 12.222 moles?
Answer:
two oxygen atoms
The molar mass of CO2 is 44g/mol. How many grams are in 3 mol CO,?
Answer:
We assume you are converting between moles CO2 and gram. You can view more details on each measurement unit: molecular weight of CO2 or grams This compound is also known as Carbon Dioxide. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles CO2, or 44.0095 grams.
Answer:
Assuming the question was about 3 mol CO2 - it's 132g. Assuming it's about CO - it's 84g.
Explanation:
The molar mass of X means "a mole of X weighs that".
So 1 mol CO2 weighs 44g, so 3 moles will weigh three times that - 132g.
Now, with CO, we need to compute the molar mass of CO. One particle of CO is comprised of 2 atoms - a Carbon atom and an Oxygen atom, with molar masses ~12g and ~16g respectively. That brings us to molar mass of CO of 28g and the mass of 3 mol CO of 28g*3 = 84g
what is on the left side ?
Answer:
reactants
Explanation:
Describe what a phase diagram is
Answer:
The graph which shows under what conditions of temperature and pressure distinct phases of matter occur is called phase diagram.
How many moles are in 6.7 grams of sodium hydroxide?
How many grams are in 2.5 moles of calcium carbonate?
Answer:
see explanation
Explanation:
grams => moles => divide by formula weight
moles => grams => multiply by formula weight
a. 6.7 grams NaOH = 6.7g/40g/mol = 0.17 mole
b. 2.5 moles CaCO₃ = 2.5 moles x 100g/mol = 250 grams
All systems disperse their energy spontaneously?
Is it true or false? and WHY?
Answer:
True.
Explanation:
Yes, all systems disperse their energy spontaneously because all types of energy spontaneously flows from concentrated to dispersed if it is not hindered by any material in their way. Energy can be prevented from spreading by materials such as containers. If there is no substance in the path of energy so it can disperse automatically from a concentrated region to a lower region.
There are two reactants
in a chemical equation
and one product. The
mass of the product is
30g. The mass of the
first reactant is 17g.
What must the mass of
the second reactant be,
if the equation is to
follow the law of
conservation of mass?
PLEASE HELP ME
Answer:
13g
Explanation:
The law of conversation of matter tells us that in a chemical reaction, matter is never created or destroyed, it's simply converted from one form to another. So the mass of reactants should always equal the mass of the products in a chemical reaction.
Therefore, if the total mass of the products is 30g, that means that the reactants have a mass of 17g + the other reactant to = 30g.
30g - 17g = 13g
Heating water so that it boils is an example of _____.
Answer:
Exothermic change
Explanation:
Hope this helps and sorry if it isnt the answer you were looking for.
I can be formed into a sheet, I am high in luster, and am a very good conductor. I must be a ...
a
metal
b
nonmetal
c
metalloid
d
noble gas
Answer: metal
Explanation:
help :) plz :) ........
Answer:
D. 4:3
Explanation:
The mole ratio is simply the coefficients in a balanced chemical reaction and their relation to each other. For example, the mole ratio between Al and [tex]Al_{2}O_{3}[/tex] is 2:1, and the ratio between [tex]O_{2}[/tex] and [tex]Al_{2}O_{3}[/tex] is 3:2.
aerobic cellular respiration requires an adequate supply of
Answer:
oxygen ?
Explanation:
not sure but I think so
Aerobic cellular respiration requires an adequate supply of oxygen. In the presence of oxygen, the cell completely oxidised the glucose molecule to form ATP.
What is cellular respiration?In cellular respiration, the cell takes glucose and breaks it down to form energy. Cellular respiration is of two types: aerobic respiration and anaerobic respiration.
In aerobic respiration, the cell requires oxygen. Due to the presence of oxygen, the complete oxidation of glucose takes place. Glucose is converted into pyruvic acid and then enters the Krebs cycle and the electron transport chain to make ATP.
In the aerobic cellular respiration process, the maximum amount of ATP is derived. In anaerobic respiration, the cell performs respiration without the presence of oxygen. An example is glycolysis.
In this glycolysis process, the complete oxidation of glucose does not take place. In the absence of oxygen from pyruvate, lactic acid and ethanol are produced. This is called fermentation.
Hence, for aerobic cellular respiration, oxygen is required.
To learn more about cellular expression, refer to the following link:
https://brainly.com/question/3928558
#SPJ6