A 50 gram sample of radioisotope undergoes 2 half lives. How many grams would remain at the end?

Answers

Answer 1

Answer:

you would need to multiply 50 times 2 wich is 100 so i beleive its 100

Explanation:


Related Questions

help asap, please ! :(

Answers

Answer:

huaD?W

Explanation:

describe 3 different landforms.​

Answers

Answer:

Mountains, hills, plateaus

Explanation:

In a group of rats, some individuals have a normal-sized body and others have a dwarf body. In this group, the gene for the body size trait has two alleles. The allele B is for a normal-sized body, and the alleles is for a dwarf body

Answers

Answer:

n a group of rats, some individuals have a normal-sized body and others have a dwarf body. In this group, the gene for the body size trait has two alleles. The allele for a normal-sized body (B) is dominant over the allele for a dwarf body (b).

Squeaky, a rat from this group, has a dwarf body.

Based on Squeaky's phenotype for the body size trait, which of the following could be Squeaky's genotype for the body size gene?

Explanation: can someone pls help?

define state of matter ​

Answers

State of matter refers to the forms in which matter can exist.

There are basically three states: Solid, Liquid, Gaseous.

But nowadays we extend this and add two more states: Plasma, Bose-Einstein Condensate

Given the speed of light (3.00×108 m/s) and a wavelength 4.3×10−7 m, what is the frequency?

Answers

6.9767 × 10^14

Explanation:

Given :

speed of light (c) =

[tex]3.00 \times 108m/s[/tex]

wavelength (λ) =

[tex]4.3 \times {10}^{ - 7} \: m[/tex]

Equation :

c = λv

v = c/λ

[tex]v = \frac{3.00 \times {10}^{8} }{4.3 \times {10}^{ - 7} } [/tex]

Simplify

[tex]v = 6.976744186 \times {10}^{14} [/tex]

I Really need help With CHEMISTRY !! How do I do this?

1. Find the amount of heat (Q) needed to raise the temperature of 5.00 g of a substance from 20.0 to 30.0 degrees Celsius, if the specific heat of the substance is 2.01J/g℃



2. A metal with a specific heat of 0.780 J/g℃ requires 45.0 J of heat to raise the temperature by two degrees Celsius. What is the mass of the metal?

Answers

Answer:

1: 100.5 J

2: 28.8 g

I  found the answers online ;-;"

hhhhhhhhhheeelp !!! give 20 pintos

Answers

Answer:

you can run out of money the supplier could run out or they could stop making the renewable.

Explanation:

2. Why is soil considered limited?

Answers

Answer: he natural area of productive soils is limited – it is under increasing pressure of intensification and competing uses for cropping, forestry, pasture / rangeland and urbanization, and to satisfy demands of the growing population for food and energy production and raw materials extraction

>>>>>>>>>>>>>>>>>>>>>>>
LETS JUST END THIS ARGUMENT NOW!!!!
WHO BELIEVES THAT CEREAL ALWAYS GOES FIRST IN THE BOWL!!!!!!!!!!!??????????
You are crazy if you add the milk first!!!
YOU MONSTERSSS
Yuh im jus bord

Answers

Answer:

cereal then milk

Explanation:

Answer:

Milk first as always and always will be

Explanation:

Get flexed on ;)

Which statement about cellular respiration in plants and animals is true?

Both plants and animals need water to start cellular respiration.

Both plants and animals release energy from glucose in cellular respiration.

Both plants and animals take in carbon dioxide to break down glucose in cellular respiration.

Both plants and animals need chlorophyll to make glucose before using it in cellular respiration.

Answers

Answer:

Both plants and animals release energy from glucose in cellular respiration.

Mass = 40g
Volume = 20mL
∙What is the Density?

Answers

Answer:

2 g/cm3

...........

What is a substance that is dissolved in another substance?
O solvent
O compound
O solution
O solute​

Answers

Answer:

Solute

Explanation:

the substance that dissolves in a solvent to produce a homogeneous mixture.

WHAT DOES THE MASS OF AN OBJECT MEASURE HURRYYYYYYYYYYYYYYYYYYYYY

Answers

Answer:

object's inertial property

Explanation:

The mass of an object is a measure of the object's inertial property, or the amount of matter it contains. The weight of an object is a measure of the force exerted on the object by gravity, or the force needed to support it. The pull of gravity on the earth gives an object a downward acceleration of about 9.8 m/s2.

Answer:

The mass of the object internal property, or the amount of matter it contains

Explanation:

Hope this helps! Happy Holidays!

Elements in a ___ on the Period Table of Elements have similar chemical characteristics and properties.

Answers

The answer is : Group

You are making lemonade and the calls for 6 cups Lemon juice (L), 3 Cups of sugar (S) and 5 cups of water (W) to make 12 Cups of Lemonade (LA): your formula is:

6 L + 3 S + 5 W = 12 LA
You are given 9 cups of lemon juice (L), 8 cups of sugar (S) and unlimited water (W).
How many cups of lemonade can you make?
1. 9
2. 12
3. 18
4. 32

Answers

Answer:

18 Cups

Submitted the assignment

Explanation:

hurry and answer plz!

What does DNA contain?

C. Instructions for energy transfer

D. Instructions for searching for food

B. Instructions for learned behaviors

A. Instructions for inherited traits

Answers

The answer is most likely A. Instructions for inherited traits.

Answer:

A. Instructions for inherited traits

Explanation:

Your traits (what makes who you are) are from your DNA, and the DNA sends instructions on how your body preforms to use/inherit those traits.

I don’t know a lot about DNA, but this is the best information I can provide.

Hope this helps! :)

In what way is Model A better than Model B? Model A shows the types of elements in the compound, but Model B does not. Model A shows the total number of atoms in the molecule, but Model B does not. Model A shows the three-dimensional shape of the molecule, but Model B does not. Model A shows the number of atoms of each element in the molecule, but Model B does no

Answers

Answer:the answer is c babes

Explanation:

I hope I could help y’all

Have a nice day

Or whatever day u want LMA0 it’s not up to me. Ight peace loves

Model A is better than Model B as Model A shows the three-dimensional shape of the molecule, but Model B does not. The correct option is c.

What are molecules?

The smallest particle of a substance possesses all of its physical and chemical properties. One or more atoms make up a molecule.

Knowing the molecular weights of the molecules allows us to calculate their sizes. The molecular weight of a molecule is the sum of the atomic weights of the atoms in the molecule.

The relative atomic mass of particles determines their size. Particles with a higher relative atomic mass weigh more than particles with a lower relative atomic mass. Larger atoms have heavier iotas and a larger relative atomic mass.

Therefore, the correct option is c, Model A shows the three-dimensional shape of the molecule, but Model B does not.

To learn more about molecules, refer to the link:

https://brainly.com/question/28931982

#SPJ2

What is the subscript of 3MgC12

Answers

I’m not entirely sure buh i think Mg would be 3 and C would be 12

What is the atomic mass of an atom that contains 21 protons, 21 electrons, and 25 neutrons

Answers

44.95591 atomic mass units

Have a Merry Christmas!

Potasyum-40 küçük atom numaralı doğal radyoaktif birkaç element izotopundan biridir ve doğada K izotopları içerisindeki bolluk yüzdesi %0,012'dir. 1,65 mg K/mL içeren bir bardak sütü içtiğiniz zaman kaç tane 40K atomu yutmuş olursunuz? (1 Bardak süt 225 mL, K: 39,10 g/mol)

Answers

Answer:

6.707 × 10¹⁷

Explanation:

From the information given:

40 ^ K kütlesi = sütteki K kütlesi × 40 ^ K / 100 kütle yüzdesi

nerede;

sütteki K kütlesi = 1.65 mg of K/mL × 225 mL = 371.25  mg of K

40 ^ K kütlesi = 371.25  × 0.012/100

40 ^ K kütlesi = 0,04455 mg = 4.455 × 10⁻⁵ grams

40 ^ K mol sayısı = 40 ^ K kütlesi / molar kütle

= 4.455 × 10⁻⁵/40

= 1.11375 × 10⁻⁶

Son olarak, 40 ^ K = mol × Avogadro sayısı atomları

= 1.11375 × 10⁻⁶  × 6.022 × 10^23

= 6.707 × 10¹⁷

Tenemos un cuerpo de 40 g cuya densidad es 1,24 g/mL y otro objeto de 70 g con una densidad de 0,96 g/mL. Si introducimos cada uno en un recipiente con agua, ¿en qué caso subirá más el nivel de líquido?

Answers

Answer:

El nivel de líquido subirá más al introducirse el objeto de 70 g.

Explanation:

El nivel de líquido subirá más con el objeto que tenga mayor volumen.

Por lo tanto vamos a calcular el volumen de ambos objetos, usando la definición de densidad:

Densidad = Masa / Volumen

Si despejamos Volumen:

Volumen = Masa / Densidad

Ahora usamos esa ecuación y calculamos los volúmenes:

Objeto 1 ⇒ 40 g ÷ 1,24 g/mL = 32,26 mL  Objeto 2 ⇒ 70 g ÷ 0,96 g/mL = 72,92 mL

Por lo tanto el nivel de líquido subirá más con el segundo objeto.

WILL MARK BRAINLIEST!
Which of the following is not a catalyst?
A. Phosphorus
B. Platinum
C. Enzymes
D. Nickel

Answers

Answer: platinum

Explanation:

i think


True or False: Sulfur by itself isn't too bad, it's when it reacts with other elements that it can become dangerous

Answers

Answer:sulfer by itself is not pleasant and it can be dangerous by itself but in large amounts.

Explanation:

Answer:

True.

Explanation:

Also did you know that it is combined with chlorine that it becomes salt? Cool right? Two deadly things combining to become a condiment

Bats have oversized ears, which help the bats use sound waves to detect the motion of their prey. Which example of the characteristics of life is most similar?

Answers

Answer:

option B = A rat hides in its hole when it sees an approaching predator.

Explanation:

In order for any organisms, whether plants or animals to be able to keep being alive they have to develop a/some functions or abilities which is going to aid in their battle battle for survival, this concept is known as the Adaptive features of organisms.

From the question above, it can be seen that the oversized ears in bats is an adaptive features for them to get their food: as it helps them to use sound waves to detect the motion of their prey.

Unlike the bats, the rats adaptive features is to have a good running legs. This will help them to avoid getting eating by predators.

Answer:just saying he is correct

Explanation:

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Answers

The first one. Always, no exceptions

Answer:

the awnser is a

Explanation:

obvious lab safetty

What type of reaction will occur with the following reactants?

CaS + NaCl -->

A) double replacement
B) decomposition
C) synthesis
D) single replacement

Answers

Answer:

A) double replacement

Explanation:

Chemical equation:

NaCl +CaS    →    Na₂S + CaCl₂

Balanced chemical equation:

2NaCl +CaS    →    Na₂S + CaCl₂

The given reaction is double replacement reaction in which cation and anions of each reactant exchange with each other.

Double replacement:

It is the reaction in which two compound exchange their ions and form new compounds.

AB + CD → AD +CB

Other options are incorrect because,

Synthesis reaction:

It is the reaction in which two or more simple substance react to give one or more complex product.

AB → A + B

Single replacement:

It is the reaction in which one elements replace the other element in compound.

AB + C → AC + B

Decomposition reaction:

It is the reaction in which one reactant is break down into two or more product.

AB → A + B

Which of the following uses mechanical energy to function?
a computer
a battery
a microwave oven
a windmill

Answers

Answer:

Explanation:fff

In an endothermic reaction, energy is

A. absorbed.
B. released.
C. converted to mass.
D. synthesized.

Answers

Answer:

answer is A kxxhhxhxxhjxjxjxxj

Please help..
Describe how to perform a three step 1:100 serial dilution of 10μlof a bacterial culture.

Answers

Answer:

For a 1:100 dilution, one part of the solution is mixed with 99 parts new solvent. Mixing 100 µL of a stock solution with 900 µL of water makes a 1:10 dilution. The final volume of the diluted sample is 1000 µL (1 mL), and the concentration is 1/10 that of the original solution

Explanation:

i hope that gives you an idea

What is the total number of electrons in an atom of an element with an atomic number of 18 and a mass number
of 402
a. 58
c. 22
b. 18
d. 40

Answers

Answer:

18

Explanation:

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