4 wings one tail what am i

Answers

Answer 1

Answer: only possible answer i think there is its a dragonfly jas 4 wings 1 tail

Answer 2

Answer: of course it is a dragonfly with 4 wings and a tail.

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Please answer number 76,77 and 78.

Answers

76. The level of muddy water will decrease slightly if the model is left in a sunny location for several days because of Evaporation. The sun will vaporize the water found in the mud, turning it into it's gaseous state, which will then cause it to rise up and get stuck on the plastic wrap.

77. Precipitation

78.The reason that the sediment in the muddy water will remain the same is because the Mud will never evaporate like the water will, and therefore it will remain at the bottom of the container.

Hope that helps!

How many joules are needed to warm 675 grams of water (specific heat= 4.186 J/g degrees Celsius) from 12 degrees Celsius to 85 degrees Celsius?

Answers

Answer:

206,265.15 Joules are needed to warm 675 grams of water from 12 degrees Celsius to 85 degrees Celsius.

Explanation:

Between heat and temperature there is a direct proportionality relationship, where the constant of proportionality depends on the substance that constitutes the body. So, the equation that allows you to calculate heat exchanges is:

Q = c * m * ΔT

Where Q is the heat exchanged for a body of mass m, constituted by a specific heat substance c and where ΔT is the temperature variation.

In this case, you know:

Q=?
c= $4.186 (J)/(g*degrees Celsius)$

m=675 g
ΔT=Tfinal-Tinitial=85 degrees Celsius - 12 degrees Celsius= 73 degrees Celsius.

Replacing:

$Q=4.186 (J)/(g*degrees Celsius)*675 g*73 degrees Celsius$

Resolving you get:

Q=206,265.15 J

206,265.15 Joules are needed to warm 675 grams of water from 12 degrees Celsius to 85 degrees Celsius.

85-12 = 73 degrees needed
4.186 J/degree Celsius, so
73 degrees * 4.186 J/degree = 305.578 J to raise 1 gram 73 degrees
there are 675 grams, so 305.578 * 675 = 206265.15 J

2.06 x 10^5 J are needed

How many valance electrons are in an Adam of each element in group 15 in the periodic table

Answers

Answer:5

Explanation:The pnictogen group, or nitrogen group, is located in column 15 of the periodic table. This family consists of the elements nitrogen, phosphorus, arsenic, antimony, bismuth, and ununpentium (N, P, As, Sb, Bi, and Uup, respectively). Each member of this family contains five valence electrons.

Nitrogen is found to have either 3 or 5 valence electrons and lies at the top of Group 15 on the periodic table. It can have either 3 or 5 valence electrons because it can bond in the outer 2p and 2s orbitals.

See if that helps

A reaction between an acid and a base is called a(n) ________________ reaction.

Answers

A reaction between an acid and a base is called a(n) neutralization reaction.

* Hopefully this helps:) Mark me the brainliest:)!!

∞ 234483279c20∞

Answer:

the answer to this question is ...........ccccccccccccccccccccccc

Explanation:

the n word neutralization

How much smaller is an electron than a proton

Answers

Answer:

An electron is around 1800 times smaller than a proton

Explanation:

Which reaction is single replacement?(1) 2H2O2 --> 2H2O + O2

(2) 2H2 + O2 --> 2H2O

(3) H2SO4 + Mg --> H2 + MgSO4

(4) HCl + KOH --> KCl + H2O

Answers

Among the given choices, the third option is the only one which illustrates single replacement. (3)H2SO4 + Mg --> H2 + MgSO4 A single replacement is also termed as single-displacement reaction, a reaction by which an element in a compound, displaces another element. It can be illustrated this way: X + Y-Z → X-Z + Y

In a single replacement reaction (or simple displacement) an element reacts with a compound and takes the place of another element in that compound. The reaction that shows a sigle replacement is the third one. Where H2SO4 and Mg turn into H2 + MgSO4. In this case Mg replaces H2

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