need help with this question asap :)
-20 points!..

Answer:

Explanation: Carbon and silicon BOTH come from Group 14 of the Periodic Table , i.e. both formally have the same number of valence electrons, 4 such electrons.........

Answer: For number 8. I think only one if not i'm so sorry also you would need 143. 0914

Explanation:

Answer:

Hello! :p

I hope this helps! Thank you so much! :)

Answer:

1. More data should be collected to get a more reliable average

2. A boiling point at 1.5 atmospheres could be predicted fairly well

3. The actual boiling point is probably between 34 C and 40 C

4. By taking 10 measurements of each of the five liquids and finding an average

5. The thermometer being used might need to be recalibrated

Explanation:

Took the quick check

Answer:

b,a,b

Explanation:

The energy transfers and transformations that occur are kinetic energy is from the person's legs to the pedals and thermal energy due to friction when the wheels get warm.

The law of conservation of energy states that energy can neither be created nor destroyed but can be converted from one form to another.

The energy transfers and transformations that occur when a person rides a bicycle are:

Learn more about conservation of energy here: https://brainly.com/question/24772394

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Answer:

the clay will be melted by the light

Explanation:

because UV rays are hot but in a way, human skin can not feal pain

Answer:

B

Explanation:

Moisture evaporating is going against the pull of gravity

Answer:

C. As the temperature increases,the speed of gas molecules increase.

Answer:

33.3% (depending on how many significant figures you need)

Explanation:

Actual yield divided by theoretical yield times 100%

Answer:

2.83

Explanation:

Molar concentration (mol/litre) = mass/molar mass × 1000/volume(in ml)

0.849 = mass/60.09 × 1000/55.5

mass = (0.849 × 60.09 × 55.5)/1000

= 2.8314

To 2 decimal places = 2.83

Answer:

Pop your popcorn for 2 minutes in the microwave but if you like to pop your popcorn old fashion get popcorn seeds and put them in an pot and then put a lid over it then pop it.

Explanation:

Answer:

Milk is essentially a colloidal dispersion of fat in water. ... However, the fact remains that the fat and water components cannot be mixed together from a solution. There are therefore, two distinct immiscible liquid phase's present, which is why it is a heterogeneous mixture.

Answer:

It have 31 electrons

It have 31 electrons

Answer:

A. Draw a conclusion

Explanation:

correct me if I'm wrong :>

Answer:

c. all matter is composed of small particles,which combine to make larger objects

Answer:

curium

−

243

,

252

/

99

Es,  

251

/

98

Cf,  

214

/

82

Pb

Explanation: Im not very good with this but here ya go!

Answer:

you dony have a picture for me to match them

Explanation:

Answer:

c

Explanation:

c is the correct answer

Answer:

c

Explanation:

Answer:

9.17 g

Explanation:

1) Calculate mols of PCl5

PCl5 (aq) + 4H2O (l) ⟶ H3PO4 (aq) + 5HCl (aq)

Mass of PCl5: 26.5g

Molar Mass of PCl5 208.24g/mol

Mol of PCl5 = Mass PCl5 /Molar mass PCl5  = 26.5g / (208.24g/mol) = 0.127257011 mol

2) Calculate mols of water needed to react

Mols of H2O per 1 Mols of PCl5 = 4 (because 4 water is needed to Phosphorus pentachloride).

Mols of H2O = Mol of PCl5 * 4 = 0.127257011 * 4 = 0.509028044 mols

3) Calculate Grams of water needed to react

Mols of H2O = 0.509028044 mols

Molar Mass of H2O = 18.015 g/mol

Mass of H2O = Mols of H2O * Molar Mass of H2O

= 0.509028044 mols* 18.015 g/mol = 9.17014021 g

sf = 3

9.17 g

Answer:A

Explanation

:

Answer:

[tex]\left[\begin{array}{cc}Oak\ Leaves&Decrease\\Caterpillar&Decrease\\Blue\ Jay&Decrease\end{array}\right][/tex]

Because the fungus is killing the oak leaves, the caterpillars will have less food and die out, resulting in a decrease in blue jay populations.

Hope it helps :) and let me know if you want me to elaborate.

Explanation:

Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field. ... Electric charge is carried by subatomic particles. In ordinary matter, negativecharge is carried by electrons, and positive charge is carried by the protons in the nuclei of atoms.

Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field. There are two types of electric charge: positive and negative (commonly carried by protons and electrons respectively). Like charges repel and unlike attract. An object with an absence of net charge is referred to as neutral. Early knowledge of how charged substances interact is now called classical electrodynamics, and is still accurate for problems that do not require consideration of quantum effects.

Answer: law of inertia

Explanation:

Answer:

The Law of Inertia

Explanation:

Another name for Newton's first law is The Law of Intertia, which states that "if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force" (“Newton’s laws of motion | Definition, Examples, & History | Britannica, n.d.).

cyanoacrylate

When cyanoacrylate polymerizes, the cyanoacrylate sticks together on an atomic level, and it becomes solid. Super Glue solidifies in all the microscopic crevices of an object that it moved into when it was a liquid, and it can form chemical bonds with any anions in the object.

Answer:

A Beaker or graduated cylinder

Explanation:

Place the solid into the graduated cylinder. Measure the amount of water in the graduated cylinder. The product is the solid's mass wich i mean by that is what number the water level is at.

Answer:

Beaker

Explanation:

Answer:

your brain processes ever detail in a picture rather than words for for example a picture of something words doesn't describe it as well as the picture could.