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SashulF [63]
3 years ago
12

Which element below would most likely gain 3 electrons?

Chemistry
1 answer:
Zanzabum3 years ago
5 0

Answer:

Lithium

Explanation:

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A student is asked to determine the chemical formula for the compound Barium
Sphinxa [80]

Answer:

Are barium and chlorine a metal and nonmetal?

Explanation:

I had the same question, and my class reviewed the test and this was the answer to this question.

5 0
3 years ago
Which is one way that in advance and biotechnology companies unintended consequence is that harm the environment?
pshichka [43]
One way that in advance and biotechnology companies unintended consequence is that harm the environment would be D. Genes implanted into a species of plant can spread to other plants.
6 0
4 years ago
The density of h2 gas in a rigid container is 0.135 g/l at a given temperature. what is the pressure of hydrogen in the flask if
Roman55 [17]
Let's assume that H₂ gas has ideal gas behavior.

Then we can use ideal gas formula,
PV = nRT

Where,
   P = Pressure of the gas (Pa)
   V = Volume of the gas (m³)
   n = moles of the gas (mol)
  R = Universal gas constant (8.314 J K⁻¹ mol⁻¹)
  T = Temperature in Kelvin (K)

But,
 n = m/M,
Where m is mass of the gas (kg) and M is molar mass of the gas (kg/mol)

Hence PV= mTR / M
              P = mTR / VM = (m/V)TR / M

m/V = d (density (kg/m³)

By rearranging,
               P = dRT / M

d = 0.135 g/L = 0.135 kg/m³
T = (273 + 201) K = 474 K
M = 2 g/mol = 2 x 10⁻³ kg/mol

From substitution,
     P = 0.135 kg/m³ x 8.314 J K⁻¹ mol⁻¹ x 474 K / 2 x 10⁻³ kg/mol
     P = 266006.43 Pa
     P = 266 kPa

Hence the pressure of H₂ gas at 201⁰C is 266 kPa


8 0
4 years ago
Describe the relationship between predator and prey in a balanced ecosystem.
Annette [7]
<h2><u>Relationship between predator and prey in a balanced ecosystem.</u></h2>

Predators grow along with their victims. Over time, prey animals are now developing and avoiding themselves to get eaten by their predators. Such tactics and modifications can take many forms that make their work easier, including disguise, mimicry, defense mechanisms, flexibility, distance, habits and even tool use.

Though fact an equilibrium appears to occur within an ecosystem between predators and prey, there are several factors which affect it, including the birth and death rates of predators and preys.

4 0
4 years ago
(a) Red light has a wavelength of roughly 700 nm. What is the wavelength in m? ball park 10.10' (b) What is the wavelength of re
joja [24]

Explanation:

1)

a) Wavelength of red light = 700 nm

1 nanometer = 10^{-9} meter

Wavelength of red light in meter will be:

=700 nm=700\times 10^{-9} m=7.00\times 10^{-7} m

b) Wavelength of red light = 7.00\times 10^{-7} m

1 meter  = 39.3701 inches

Wavelength of red light in inches will be:

7.00\times 10^{-7} m=7.00\times 10^{-7}\times 39.3701 inches

=2.7559\times 10^{-5} inches

2)

Value of distance given = 90.123 km

1 km = 3280.84 feet

90.123 km=90.123 \times 3280.84 feet=295,679.1433 feet

1 foot = 0.1515152 chain

295,679.1433 feet=295,679.1433\times 0.1515152 chain

=44,799.88453 feet\approx 4.48\times 10^4 chains

Value of distance in chains:

90.123 km=4.48\times 10^4 chains

3 0
3 years ago
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