help please !!! THANK YOU !

Answer:

0.51 J/g°C

Explanation:

Answer:People can drown or call or slip in

Explanation:

Answer:

d

Explanation:

il answer in comments if you brainly me

Answer:

2.567

Explanation:

To change milliliters into liters you divide by 1000

So when you divide 2567 by 1000 you get 2.567

Answer:

24 grams of FeF3

Explanation:

molecule (hope this helps :))

Answer:

About 10.2 g Li₃N.

Explanation:

We are given the reaction:

[tex]\displaystyle \text{6 Li(s) + N$_2$(g) }\longrightarrow \text{2 Li$_3$N(s)}[/tex]

And we want to determine the amount of Li₃N that can be formed from 6.07 g of Li and an excess of nitrogen.

To convert from g Li to g Li₃N, we can: (1) convert from g Li to mol Li, (2) mol Li to mol Li₃N, and (3) mol Li₃N to g Li₃N.

Molecular weight of Li₃N:

[tex]\displaystyle \begin{aligned}\text{MW}_\text{Li$_3$N} & = (3 (6.94) + 14.01) \text{ g/mol} \\ \\ & =34.83\text{ g/mol} \end{aligned}[/tex]

This yields three ratios:

[tex]\displaystyle \frac{1 \text{ mol Li}}{6.94 \text{ g Li}}, \frac{2 \text{ mol Li$_3$N}}{6 \text{ mol Li}}, \text{ and } \frac{34.83 \text{ g Li$_3$N}}{1 \text{ mol Li$_3$N}}[/tex]

From the initial value, multiply:

[tex]\displaystyle 6.07 \text{ g Li} \cdot \frac{ 1 \text{ mol Li}}{6.94 \text{ g Li}} \cdot \frac{2 \text{ mol Li$_3$N}}{6 \text{ mol Li}} \cdot \frac{34.83 \text{ g Li$_3$N}}{1 \text{ mol Li$_3$N}} = 10.2\text{ g Li$_3$N}[/tex]

In conclusion, 10.2 g of Li₃N is formed from 6.07 g of Li and an excess of nitrogen.

Answer:

a

Explanation:

Answer:

A

Explanation:

Density is the amount of space that atoms are compacted in a substance.Apr 25, 2017

Answer:

You place an enchantment ta ke then you place a weapon or armor and press enchant. I hope this helps

Explanation:

Answer:

Depends on what you need to enchant

Explanation:

You can enchant any tools or armor if you put lapis in the box with a symbol and you have enough exp which will show up next to the enchantment you can enchant those and you can also enchant any normal books that way

Answer:

Respiratory because you use a lot of cellular respiration to bring oxygen into the body.

Nervous because signals are sent from our brain to our muscles.

Circulatory to help with breathing and movement of blood and oxygen

Explanation:

Hope this helps!

Answer:

B.

More deer came to drink on days that were warmer.

Answer:

i dont get it

Explanation:

im small brain and only in 5th grade

Answer:

1.5232 × 10^-6 grams

Explanation:

if density = m(mass) / v(volume) then the answer would be 3

Answer:

its not pulling up ? ;(

Explanation:

Answer:

5.3 mL

Explanation:

1 g = 1 mL

5.3 g

= 5.3 x 1

= 5.3 mL

Answer:

6

Explanation:

The age of the charcoal sample in the campfire in use is equal to the time taken for the decay of 0.22 of C-14 to 0.055 Bq. Hence its age is 11552.45 years.

Unstable radioactive isotopes of atoms undergo nuclear decay by the emission of charged particles such alpha or beta particles. Radioactive decay is a first order reaction. Thus, the decay constant is written as:

k = 1/t ln (W0 / Wt)

where W0 be the initial weight and Wt be the weight after time t.

The decay constant is related to the half life time of the sample by the expression:

k = 0.693 / t1/2.

Given that t1/2 of C-14 = 5730 years.

Thus, k = 0.693 /5730 = 0.00012 yr⁻¹.

Now, we can calculate the time t using the first order equation.

t = 1/k ln ln (W0 / Wt)

= [ ln (0.22 Bq/  0.055 Bq) ] / 0.00012 yr⁻¹

= 11552.4 years.

Therefore, the age of the sample of charcoal is 11552.4 years.

To find more on radioactive decay, refer here:

http://brainly.com/question/1770619

#SPJ2

Answer:

i dont know the answer of this question... im sorry

Answer:

Limiting reactant= SO₂, Theoretical yield = 9.6g SO₃

Explanation:

The first step is is to find the limiting reactant; you do this using stoichiometry.

The reactant that produces the smallest amount of sulfur trioxide SO₃, is the limiting reactant.

In this problem, SO₂ is the limiting reactant.

Now to find the theoretical yield we will use the smallest value of SO₃.

I have uploaded a picture to better illustrate the problem and hope it helps.

Answer:

Location A

Explanation:

Answer:

location d

Explanation:

Answer:noble gases

Explanation:

Answer:

EVEN DOE IT TOO LATE, ITS B

Explanation:

Answer:

The Universe will continue to expand :)

Explanation:

Dark matter reverses the effect of gravity in some cases, and the Doppler effect also supports this claim, in which it states that the later the star has formed, the farther away it will be from the center/origin point of our universe.

Hope this helps! Mark me brainliest :)

Explanation:

The added greenhouse gases absorb the heat. They then radiate this heat. Some of the heat will head away from the Earth, some of it will be absorbed by another greenhouse gas molecule, and some of it will wind up back at the planet's surface again. With more greenhouse gases, heat will stick around, warming the planet.

Answer:

The true statement concerning visible light and electromagnetic radiation is considered to be - d. Visible light is a small portion of the electromagnetic spectrum.

The electromagnetic spectrum is the range of frequencies of electromagnetic waves or radiations. This spectrum also gives an idea about the wavelengths of electromagnetic radiations. The part of the spectrum on their higher to lower energy or frequency range from  Hz to  Hz are:

gamma rays

X-rays

ultraviolet radiation

visible light

infrared radiation

radio waves.

The visible light is the very small part of the electromagnetic spectrum that ranges from the to, Visible light is the light that the human eye can see.

Thus, the correct answer is- option d.

Learn more about visible light:

Explanation:

i did this

Answer: 3 significant figures

Explanation: because in scientific notation only the before and after decimal number are considered but in standard form all numbers including exponents are all significant figures

Answer:

3 significant figures

Explanation:

0's are not significant.

I hope it helps you!

[tex]GraceRosalia[/tex]

Answer:

The assumption is quite reasonable.........

A lightbulb contains Ar gas at a temperature of 295K and at a pressure of 75kPa. The light bulb is switched on, and after 30 minutes its temperature is 418 K. What is a numerical setup for calculating the pressure of the gas inside the light bulb at 418K?

Explanation:

P

1

T

1

=

P

2

T

2

given constant

n

, and constant

V

, conditions that certainly obtain with a fixed volume light bulb.

And so

P

2

=

P

1

T

1

×

T

2

=

75

⋅

k

P

a

295

⋅

K

×

418

⋅

K

≅

100

⋅

k

P

a

.

Had the light bulb been sealed at normal pressure during its manufacture, what do you think might occur when it is operated?