Answer:
56
Explanation:
Prokaryotes store their DNA in a nucleus.
True
or false
what is the total number of atoms in 3.0 grams sample of neon?
The total number of atoms : N = 8.95 x 10²²
Further explanationGiven
3 grams of Neon
Required
The number of atoms
Solution
mol of Neon :
= mass : Ar Neon
= 3 g : 20,1797 g/mol
= 0.1487
The number of atoms :
N = n x No(No=Avogaro's number)
N = 0.1487 x 6.02 x 10²³
N = 8.95 x 10²²
please help me I will give you 10 points
Answer:
red ig
Explanation:
✨✨What’s 2 similarities and 2 differences between the Earths layers and the atmospheric layers? ✨✨
‼️DONT COPY OFF LINE PLEASE ‼️
Answer:
Differences: Earth's atmosphere has 5 main layers where as atmospheric layers thins out in each higher layer.
Similarities: They both have multiple layers.
Explanation:
Sorry I only have 1 difference and similarity.
protons are one of the heavier pieces of an atom. true or false?
Answer:
true
Explanation:
Which of the following best describes what would happenif mitosis did not take place?
A.Cells would get smaller and smaller over time.
B.Body tissues would not be able to repair themselves
c.The production of gametes (reproductive cells) wouldnot occur.
D.Organisms would all be multicellular.
Answer: B
Explanation:
If 42.68 ml of 0.43 M KOH is used to neutralize 18.40 ml of H, SO4, calculate
the concentration of the sulfuric acid solution.
Write the net ionic equation of this reaction
The concentration of the sulfuric acid : 0.499 M
The net ionic equation
2 OH ⁻(aq]+ 2 H ⁺ (aq] → 2 H ₂O (l]
Further explanationGiven
42.68 ml of 0.43 M KOH
18.40 ml of H2SO4
Required
the concentration of the sulfuric acid
the net ionic equation
Solution
Acid-base titration formula
Ma. Va. na = Mb. Vb. nb
Ma, Mb = acid base concentration
Va, Vb = acid base volume
na, nb = acid base valence
Input the value :
a=KOH, b= H2SO4
0.43 x 42.68 x 1 = Mb x 18.40 x 2
Mb = 0.499 M
The net ionic equation
Reaction
2KOH + H2SO4 → K2SO4 + 2H2O
2 K ⁺ (aq]+ 2 OH ⁻ (aq] + 2 H ⁺ (aq] + SO ₄²⁻(aq] → 2 K ⁺ (aq] + SO ₄²⁻(aq] + 2 H ₂ O (l]
canceled the spectator ions :
2 OH ⁻(aq]+ 2 H ⁺ (aq] → 2 H ₂O (l]
During vaporization, heat energy is:
Answers:
Added
Released
Stays the same
Answer:
During vaporization, heat energy is added.
PLEASEEEE HELP I WILL GIVE 30 POINTS Cobalt
Calcium
Platinum
Phosphorus
Part II:
Look at a periodic table, and in the space below type the missing chemical or symbol. Then answer the question below.
Iron:
Co:
Na:
Tin:
P:
F:
Fe:
Magnesium:
Uranium:
Ca:
Carbon:
Lead:
Ag:
Zn:
Ni:
Part III:
You have found a new element with the atomic mass of 119. In a paragraph explain where you would put in on the periodic table and why you would put it there. What type of properties would this element have? What would you call it?
Answer:
Iron: Fe
Co: Cobalt
Na: Sodium
Tin: Sn
P: Phosphorus
F: Flourine
Fe: Iron
Magnesium: Mg
Uranium: U
Ca: Calcium
Carbon: C
Lead: Pb
Ag: Silver
Zn: Zinc
Ni: Nickle
----------------
There is honestly no right answer for this but here is what I would put:
Atomic mass increases as you go from left to right. If you look at the periodic table, it would be between Sn and Sb. It would bet here because Sn is 118 and Sb is 121. Basing it off of Antimony and putting it in group 15, the properties are that it is metallic and is a poor conductor of heat. I would call it Stin, which would be shortened to St.
Please help (: What are the sources and stages of a river ?
Water, ALSO if you cant figure out the answer looking up on g00gl3e
3 Stages of a River
YOUTHFUL STAGE (UPPER COURSE) – V- Shaped Valley > Erosion. ...
MATURE STAGE (MIDDLE COURSE) – Meanders > Erosion and Deposition.
OLD AGE STAGE (LOWER COURSE) – Floodplains > Deposition. ...
Advantages. Scenic Attraction. ...
Dangers. Flooding – Damage to property, land, animals and homes. ...
A doctor prescribes 125 mg of penicillan to be taken 4 times each day. The
concentration of the solution given to the patient is 250mg penicillan/5ml. How
many mL should the patient take in each dose?
1) 500 mL
2) 10.0 mL
3) 2.50mL
4) 50.0 mL
5) 2.0 mL
10 ml should the patient take in each dose
Further explanationGiven
125 mg of penicillan ⇒ 4 times/day
The concentration = 250 mg/5 ml
Required
The volume of the dose
Solution
The mass of penicillan/day :
= 125 mg x 4 times
= 500 mg
The volume/day :
= 500 mg : 250 mg/5 ml
= 10 ml
How many joules would it take to raise a 9.00 kg sample of cobalt 6°C?
How many moles of H2S are produced?
Answer:
You can view more details on each measurement unit: molecular weight of H2S or grams This compound is also known as Hydrogen Sulfide. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles H2S, or 34.08088 grams. Note that rounding errors may occur, so always check the results.
The number of grams that one "mole" of a substance weights is the definition of molar mass. So, the molar mass of H₂S is "34.08088"gams.
Molar mass:In the definition of molar mass is the total atomic weights of the atoms that make up a molecule.Detailed information about each measurement unit can be found here: H₂S molecular weight in grams Hydrogen Sulfide is another name for this substance. A mole is the SI base unit for substance quantity. One mole of H₂S, or 34.08088 grams, is equal to one mole of H₂S.Find out more about the moles here:
brainly.com/question/20055843
how many newton’s to lift a 25kg weight
Answer:
245.18 newtons
Explanation:
245.18 newtons
An i just want the points
thank you
Explanation:
what is metaphase
HELEPWOAUSJSKQJDHEHR
Answer:
the second stage of cell division. its between prophase and anaphase during the chromosomes become attached to spindle fibers.
Si en un laboratorio hay 300 moles de plomo y 300 moles de plata en cual de los dos casos la masa en mayor?
Answer:
Esto significa que la masa en las moles de plomo es mayor que en las de plata.
Explanation:
Las moles de los átomos representan la cantidad de átomos presentes. Para saber la masa de los átomos debemos convertir las moles a gramos usando el peso molecular de cada uno de los átomos (207.2g/mol para el plomo y 107.82g/mol para la plata).
La masa de plomo en 300 moles es:
300 moles * (207.2g / mol) = 62160g de plomo
Y la masa de plata es:
300 moles * (107.82g / mol) = 32346g de plata
Esto significa que la masa en las moles de plomo es mayor que en las de plataWhen matter has define volume ,but can take the shape of its container we call it a
sodium hydrogen carbonate is heated after heating which substance is form??? and what is the colour of the substance
How do the formulas for molecular and ionic compounds differ? Explain the reason for
the difference.
Answer:
How do the formulas differ for molecular and ionic compounds? The formula for a molecular compound represents the atoms that make up one molecule of a compound. The formula for an ionic compound represents one formula unit of the compound. ... Put two electron between atoms to form a chemical bond.
Explanation:
By February of 1861, how many states seceded from the Union?
5
11
9
7
Answer:
D. 7
Explanation:
i did it
How many moles are in 7.8g of CaO?
This compound is also known as Calcium Oxide. The SI base unit for amount of substance is the mole. 1 grams CaO is equal to 0.017832495800447 mole. Note that rounding errors may occur, so always check the results.
Hope I helped :)
how many atoms are in 2.85x10^3 g of gallium
Answer:
2850 grams I hope this help
A by-product of photosynthesis that is not used by the plant, but rather released into the air, is ________________.
Answer: I think is carbon dioxide!!
Explanation: ( i havent learned about photosynthesis in a long time :) )
hope i helped!! also have a good day!
What is the correct formula for the ionic compound chromium (III) nitride?
Why are fungi classified together?
They get their food the same way
They have a similar behavior
They grow in the same areas
They look alike
Answer:
A, they get their food in the same way.
Explanation:
Some fungi can be toxic or poisonous.
Example: mushrooms. Mushrooms typically are found in forests and meadows/plains.
Some fungi are glowing, brown, and in many forms/shapes.
In conclusion, fungi all get nutrient from the dirt they grew in, forests can be moist which gives fungi excellent places to form, usually around trees, because they can absorb plenty of nutrients from the dirt.
If you are cooking bread, and you weigh the dough before baking and weigh the bread after baking, but they weigh 2 different amounts, how is the law of conservation of mass still being followed?
Answer:
jayfeather friend me
Explanation:
In a toasty kitchen, your dough may proof in as little as an hour (or less!). When the temperatures dip, it can take much longer—upwards of two or even three hours.
An apple, potato, and onion all taste the same if you eat them with your nose plugged
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✩✩✩
Hey, love!
You only get that little quote if your streak gets higher so, congrats on that!
Keep it up, stay lovely!
✩✩✩
6CO2 + 6H20 + Energy
Co H1206 + 602
D. heat of reaction
O C. thermal reaction
B. endothermic reaction
A. exothermic reaction
3. Iron + copper sulphate
Will it react
Answer: Iron displaces copper ions from an aqueous solution of copper sulphate. ... In this reaction, metallic iron is converted into ferrous ion (Fe2+) and cupric ion (Cu2 +) is converted into metallic copper. Fe (s) + Cu2 + (aq) —→ Fe2+ (aq) + Cu (s).
Explanation:
Write chemical name ofNH4Cl, Na2CO3.
Answer:
NH4CI
AMMONIUM CHLORIDE
NA2CO3
SODIUM CARBONATE