Element X decays radioactively with a half life of 6 minutes. If there are 260 grams of Element X, how long, to the nearest tenth of a minute, would it take the element to decay to 113 grams

Answer:

3.5

Step-by-step explanation:

The chemical acidity of a solution is measured in units of pH: pH=-log[H+], where [H+] is the hydrogen ion concentration in the solution. 1.58 x 10⁻⁹ is [H+] if the pH=8.8.

The term pH is defined as the negative logarithm of the [H+] hydrogen ion.

The isolated hydrogen ion, represented by the symbol H+, hence it is used to represent a proton. Because the bare nucleus can readily combine with other particles like electrons, atoms, and molecules, the  hydrogen ion.

The formula for calculating [H+] hydrogen ion is as follows:

pH = - log[H+]

Given pH = 8.8

8.8 = - log[H+]

-8.8 =  log[H+]

Taking Antilogarithm Both side

Antilog of [-8.8] = [H ]

By solving above expression [H+]

= 1.58 x 10⁻⁹

Thus, 1.58 x 10⁻⁹ is [H+] if the pH=8.8.

To learn more about the pH, follow the link;

https://brainly.com/question/15289741

#SPJ2

Answer:

x=1 y=10

Step-by-step explanation:

5x+y=15

2x+y=12

y=12-2x

5x+12-2x=15

3x=3

x=1  

5+y=15

y=10

Answer:

10.560

Step-by-step explanation:

you can just use the calculator!

Answer:

62.5 i think... sorry if im wrong

Step-by-step explanation:

i hope this helps :3

Answer:

go to bed

Step-by-step explanation:

Answer:

Dam ur parents r strict my dude...

Step-by-step explanation:

draw, make something, build things, walk... i mean there is a lot of things u can do, but it rlly depends on the person...

Don't need permission

Made my decision to test my limits

Cause it's my business, God as my witness

Start what I finished

Don't need no hold up

Taking control of this kind of moment

I'm locked and loaded

Completely focused, my mind is open

All that you got, skin to skin, oh my God

Don't ya stop, boy

Somethin' 'bout you makes me feel like a dangerous woman

Somethin' 'bout, somethin' 'bout, somethin' 'bout you

Makes me wanna do things that I shouldn't

Somethin' 'bout, somethin' 'bout, somethin' 'bout

Nothing to prove and I'm bulletproof and

Know what I'm doing

The way we're movin' like introducing

Us to a new thing

I wanna savor, save it for later

The taste of flavor, cause I'm a taker

Cause I'm a giver, it's only nature

I live for danger

All that you got, skin to skin, oh my God

Don't ya stop, boy

Somethin' 'bout you makes me feel like a dangerous woman

Somethin' 'bout, somethin' 'bout, somethin' 'bout you

Makes me wanna do things that I shouldn't

Somethin' 'bout, somethin' 'bout, somethin' 'bout you

All girls wanna be like that

Bad girls underneath, like that

You know how I'm feeling inside

Somethin' 'bout, somethin' 'bout

All girls wanna be like that

Bad girls underneath, like that

You know how I'm feeling inside

Somethin' 'bout, somethin' 'bout

Somethin' 'bout you makes me feel like a dangerous woman

Somethin' 'bout, somethin' 'bout, somethin' 'bout you

Makes me wanna do things that I shouldn't

Somethin' 'bout, somethin' 'bout, somethin' 'bout you

All girls wanna be like that

Bad girls underneath like that

You know how I'm feeling inside

Somethin' 'bout, somethin' 'bout

All girls wanna be like that

Bad girls underneath like that

You know how I'm feeling inside

Somethin' 'bout, somethin' 'bout

Yeah, there's somethin' 'bout you boy

Yeah, there's somethin' 'bout you boy

Yeah, there's somethin' 'bout you boy

Yeah, there's somethin' 'bout you boy

(Somethin' 'bout, somethin' 'bout, somethin' 'bout you)

Yeah, there's somethin' 'bout you boy

Yeah, there's somethin' 'bout you boy

Yeah, there's somethin' 'bout you boy

Yeah, there's somethin' 'bout you boy

(Somethin' 'bout, somethin' 'bout, somethin' 'bout you)

Answer:

g = 28,000 - 700t

Step-by-step explanation:

Answer: 54.2%

Step-by-step explanation:

The percent mark-up refers to how much higher you sell a product than what you bought it for expressed as a percentage of what you bought it for.

In this case, the woman bought it for $120 and sold it for $65 more.

Cost = $120

Markup = $65

Markup percentage = 65 / 120 * 100%

= 54.2%

Answer:

B

Step-by-step explanation:

Answer:

y - 4 = -1/2 (x+1)

Step-by-step explanation:

The point slope form of the equation is expressed as;

y-y0 = m(x-x0)

Get the slope

m = 4-5/-1-(-3)

m = -1/2

Substitute any of the point and m = -1/2 into the expression

y - 4 = -1/2 (x+1)

2(y-4) = -(x+1)

2y-8 = -x-1

2y+x = -1+8

2y+x = 7

Hence the required equation of the line is 2y+x = 7

The given equation can be solved to obtain x = 40.

A linear equation is a equation that has degree as one.

To find the solution of n unknown quantities n number of equations with n number of variables are required.

The given linear equation can be solved as follows,

0.2(x - 20) = 44 - x

=> 0.2x + x = 44 + 0.2 × 20

=> 1.2x = 48

=> x = 48/1.2

       = 40

Hence, the value of x for the given equation is found to be 40.

To know more about Linear equation click on,

brainly.com/question/11897796

#SPJ5

Answer:

2w +4 = 24

w=10

Step-by-step explanation:

The bold is the number you put in the box, hope that help.

Answer:

Yes

Step-by-step explanation:

The order is switched from boys to girls(5 to 2)to girls to boys (2 to 5).

Answer: x = 8/4 = 2

12(2) + 4(6) = 24 + 24 = 48 = 6*8

Step-by-step explanation:

$12X + $6(4) = (X+4)*$8

12X + 24 = 8(x+4)

12x + 24 = 8x + 32

12x + 24 - 8x - 32 = 0

4x - 8 = 0

4x = 8

x = 8/4 = 2

Answer:

-27w^9

Step-by-step explanation:

Multiply

-3w^8 × 9w

Step 1:

-3 × 9

= -27

Step 2:

w^8 × w¹

Using the law of indices

w^8 × w¹

= w^(8+1)

= w^9

-3w^8 × 9w

= -27w^9

Answer:

1/2 and 6/1

i belive you cross multiply

so you would get 12/1

so n=12

hopw i helped

Step-by-step explanation:

Answer:

198.56[tex]m^{3[/tex]

Step-by-step explanation:

To find the volume of a cylinder, you need to find the area of the cross-section (one of the circles on the side) and multiply it by the length.

Area of the circle = π[tex]r^{2}[/tex] = π x (5.3/2) x (5.3/2) = π x 2.65 x 2.65 = 7.0225π

Volume of the cylinder = 7.0225π x 9 = 63.2025π = 198.56[tex]m^{3[/tex]

Step-by-step explanation:

therefore the third angle is 51 degrees

Answer:

5% of 320 is 16

you multiply 320 by .05 to get 16

Answer: 16

Step-by-step explanation:

Solution for What is 5 percent of 320:

5 percent *320 =

(5:100)*320 =

(5*320):100 =

1600:100 = 16

Now we have: 5 percent of 320 = 16

Step-by-step explanation:

=0.2(2b-15c)

=0.4b-3c

hope it helps.

Answer:

x = [tex]3\frac{3}{4}[/tex]

Step-by-step explanation:

First, you have to leave 2x by itself on the left side of the equation:

2x = 60/8

Then divide,

x = 15/4

Simplified fraction: x = [tex]3\frac{3}{4}[/tex]

Answer:

exact form: x=15/4

decimal form; 3.75

miced number: 3  3/4

Step-by-step explanation:

Answer:

Blockof silver's wieghing = 8 ounces

total rate = $104

therefore, one ounce=$104/8= $13

9514 1404 393

Answer:

  replace recipe quantities:

  1/4 ⇒ 5/8; 1/2 ⇒ 1 1/4; 1 ⇒ 2 1/2; 1 1/2 ⇒ 3 3/4; 2 ⇒ 5

Step-by-step explanation:

The given recipe serves 4, so must be multiplied by 10/4 = 5/2 to make it make 10 servings.

The numbers in the recipe (ignoring units or ingredients) are ...

  1/4, 1/2, 1, 1 1/2, 2

Each of these numbers needs to be multiplied by 5/2 to get the number for the larger recipe.

  1/4 × 5/2 = 5/8

  1/2 × 5/2 = 5/4 = 1 1/4

  1 × 5/2 = 5/2 = 2 1/2

  (1 1/2) × 5/2 = 3/2 × 5/2 = 15/4 = 3 3/4

  2 × 5/2 = 5

Then, to make the larger recipe, rewrite it with the quantities replaced as follows:

  old value ⇒ new value

  1/4 ⇒ 5/8

  1/2 ⇒ 1 1/4

  1 ⇒ 2 1/2

  1 1/2 ⇒ 3 3/4

  2 ⇒ 5

__

For example, 1 1/2 lbs of fresh tomatoes ⇒ 3 3/4 lbs of fresh tomatoes

_____

Additional comment

If you actually want to create the recipe, you may find it convenient to use a spreadsheet to list quantities, units, and ingredient names. Then you can add a column for the quantities for a different number of servings, and let the spreadsheet figure the new amounts. (A spreadsheet will compute quantities in decimal, so you will need to be familiar with the conversions to fractions--or use metric quantities.)

Answer:

Yes because every x is matched with only one y

Step-by-step explanation:

A function is an equation where each input has a specific output

Answer:

Okay, so..if i am thinking correctly you would have to times the numbers the original way that you would multiply anything with... then the remainders im sure that you probably just have to add those in...

(listen i am not so sure about this, i am in 6th grade...but hopefully i helped a little, sorry if i didn't help at all, i rly am... :) )

Step-by-step explanation:

HOPE I HELPED SORRY IF NOT, DON'T COUNT ON MY HELP..

I really am sorry if i didn't help y'all out... :/

<3