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3 years ago

What animals are in the Arctic Tundra?

Chemistry

2 answers:

ehidna [41]3 years ago

6 0

Answer:

Polar Bears

Arctic Foxes

Seals

Penguins

They all live in the cold, so they all must live in the Arctic Tundra ;)

loris [4]3 years ago

6 0

Answer:

Animals such as polar bears, arctic wolves, and arctic foxes live in the Arctic Tundra.

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How can a calorimeter measure energy?

lord [1]

Explanation:

the carolimeter help trap the heat from a chemical reaction taking place . from that point we can find the heat by taking a thermometer to measure heat in the water, then using that answer we can find out how much of the heat has been released into the atmosphere etc.

5 0

3 years ago

General equilibrium problems. ICE type problems.a. Isopropyl alcohol can dissociate into acetone and hydrogen according to the r

Pepsi [2]

Answer:

Explanation:

In a gaseous reaction mixture partial pressure is proportion to mole of the gas concerned .

Pressure of the reactant gas from gas equation

PV = nRT

P = nRT / V

= .166 x .082 x ( 273+179) / 10

= .615 atm

C₃H₇OH = (CH₃)₂CO + H₂

before reaction moles in terms of pressure

.615 0 0

After reaction

.615 - x x x

.444 = x² / ( .615 - x )

.273 - .444 x = x²

x² + .444 x - .273 = 0

x = .361 atm

So partial pressure of acetone is .361 atm at equilibrium.

5 0

3 years ago

Lithium has two stable isotopes with masses of 6.01512 amu and 7.01600 amu. The average molar mass of Li is 6.941 amu. What is t

Dvinal [7]

Answer : The percent abundance of Li isotope-1 and Li isotope-2 is, 6.94 % and 93.1 % respectively.

Explanation :

Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

$\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i$ .....(1)

Let the fractional abundance of Li isotope-1 be 'x' and the fractional abundance of Li isotope-2 will be '100-x'

For Li isotope-1 :

Mass of Li isotope-1 = 6.01512 amu

Fractional abundance of Li isotope-1 = x

For Li isotope-2 :

Mass of Li isotope-2 = 7.01600 amu

Fractional abundance of Li isotope-2 = 100-x

Average atomic mass of Li = 6.941 amu

Putting values in equation 1, we get:

$6.941=[(6.01512\times x)+(7.01600\times (100-x))]$

By solving the term 'x', we get:

$x=694.048$

Percent abundance of Li isotope-1 = $\frac{694.048}{100}=6.94\%$

Percent abundance of Li isotope-2 = 100 - x = 100-6.94 = 93.1 %

6 0

3 years ago

IRINA_888 [86]

Answer Choice: C

Explanation: Mendeleev is best known for publishing the first periodic table of elements in 1869, revolutionizing the world's understanding of physics and chemistry; and, really almost every aspect of science.

8 0

3 years ago

HELP FAST ITS MULTIPLE CHOICE WILL MARK BRAINLIEST!!

Alina [70]

Answer: I believe its the last one SPHERES.

Explanation:

5 0

3 years ago

Read 2 more answers