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OLga [1]
3 years ago
5

What type of bond would form between two atoms of selenium? A. Double ionic bond B. Single ionic bond C. Single covalent bond D.

Double covalent bond
Chemistry
1 answer:
kirill115 [55]3 years ago
3 0

The corret answer is D

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A friend asks you to help them decide which crackers are healthier. Comparing approximately equal serving sizes of 1 cracker (ap
Readme [11.4K]

Answer:

The correct option is "Triscsuit"

Explanation:

In my opinion the correct option is tricsuit, because it has 0% saturated fat and TRANS fat, which is healthy fats since these fats are the worst for our body.

They also contain sodium but their levels are not high enough to trigger hypertension.

8 0
2 years ago
How much heat will a 45.00 g piece of glass require to change its temperature from 10 to 30 °C. The specific heat capacity is 0.
kolbaska11 [484]

Answer:

Q = 450 J

Explanation:

Given that,

Mass of a piece of glass, m = 45 g

The temperature changes from 10°C to 30°C.

The specific heat is 0.5 J/g°C

We need to find heat required to raise the temperature. The formula that is used to find it is given by :

Q=mc\Delta T\\\\Q=45\times 0.5\times (30-10)\\\\Q=450\ J

So, the required heat is 450 J. Hence, the correct option is (c).

6 0
2 years ago
a sample container of carbon monoxide occupies a volume of 422 ml at a pressure of 785 torr and a temperature of 242 k. what wou
MrRissso [65]

The temperature if the volume were changed to 225 ml at a pressure of 785 torrs is 129K.

Pressure is constant.

so

V1 /  T1 = v2 / T2

so

T2 = V2 T1 / V1

T2 =  225 x 242 / 422

T2 =  129K

What is temperature?

Temperature is a measure of hotness or coldness expressed on several scales, including Fahrenheit and Celsius. Temperature indicates the direction in which thermal energy spontaneously flows - ie, from a hotter body (one at a higher temperature) to a colder body (another at a lower temperature).

The Fahrenheit temperature scale (°F) is used in the United States and some other English-speaking countries. The Celsius temperature scale (°C) is standard in almost all countries that have adopted the metric system and  is widely used in science. The Kelvin (K) scale, the absolute temperature scale is recognized as the international standard for scientific temperature measurement.

To learn more about temperature, refer;

brainly.com/question/15267055

#SPJ4

4 0
1 year ago
Into what protein structure is spider silk found?
snow_tiger [21]

Answer:

Into what protein structure is spider silk found?

= Primary structure

I HOPE IT HELP YOU

4 0
1 year ago
A solution is prepared by mixing 50.0 mL of 0.50 M Cu(NO3)2 with 50.0 mL of 0.50 M Co(NO3)2. Sodium hydroxide is added to the mi
vekshin1

Answer:

Cu(OH)₂ will precipitate first, with [OH⁻] = 2.97x10⁻¹⁰ M

Explanation:

The equilibriums that take place are:

Cu⁺² + 2OH⁻ ↔ Cu(OH)₂(s)   ksp = 2.2x10⁻²⁰ = [Cu⁺²]*[OH⁻]²

Co⁺² + 2OH⁻ ↔ Co(OH)₂(s)   ksp = 1.3x10⁻¹⁵ = [Co⁺²]*[OH⁻]²

Keep in mind that <em>the concentration of each ion is halved </em>because of the dilution when mixing the solutions.

For Cu⁺²:

2.2x10⁻²⁰ = [Cu⁺²]*[OH⁻]²

2.2x10⁻²⁰ = 0.25 M*[OH⁻]²

[OH⁻] = 2.97x10⁻¹⁰ M

For Co⁺²:

1.3x10⁻¹⁵ = [Co⁺²]*[OH⁻]²

1.3x10⁻¹⁵ = 0.25 M*[OH⁻]²

[OH⁻] = 7.21x10⁻⁸ M

<u>Because Copper requires less concentration of OH⁻ than Cobalt</u>, Cu(OH)₂ will precipitate first, with [OH⁻] = 2.97x10⁻¹⁰ M

3 0
3 years ago
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