Which statement is true regarding chemical bonds? Science Assignment Help

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Which statement is true regarding chemical bonds? Science Assignment Help. Which statement is true regarding chemical bonds? Science Assignment Help.

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Which statement is true regarding chemical bonds?

They change in energy depending on the surroundings.

They are not a source of energy in chemical reactions.

They possess kinetic energy.

They possess potential energy.

Which statement is true regarding chemical bonds? Science Assignment Help[supanova_question]

Help Me WITH ALGEBRA Mathematics Assignment Help

Question 3.3. Factor. 4z² + 20z + 25

(Points : 1)

       (2z  + 5)²

       (2z  – 5)²

       2(z + 5)²

       4(z + 5)(z – 5)

Question 4.4. What is the x-intercept of the equation whose line is y = 3x – 12?
(Points : 1)

       –9
       –4
       4
       9

Question 5.5. What is the x-intercept of the equation whose line is 5x + 20y = 40?
(Points : 1)

       –8
       –2
       2
       8

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Help with this question please Mathematics Assignment Help

You perform a binomial experiment consisting of 10 trials with a probability of success of 36% on each trial. What would a histogram of this probability look like?

	A. Symmetric
	B. Skewed. Higher values to the right
	C. Skewed; Higher values to the left
	D. Not enough information

[supanova_question]

I need help with algebra!! Mathematics Assignment Help

A normal distribution has a mean of 51 and a standard deviation of 3. What is the probability that a random selected x-value from the distribution is at most 48?

	A. 0.025
	B. 0.16
	C. 0.84
	D. 0.975

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Can someone help me work these out? Science Assignment Help

A
sample of neon gas exerts a pressure of 120kPa when the temperature is
400K. What pressure is produced when the temperature is raised to 600K?
At
what Kelvin temperature will a sample of gas occupy 12 liters if the
same sample occupies 8 liters at 27°C?

At
a constant pressure, a sample of gas occupies 420mL at
210K. What volume does the gas occupy at 250K?

[supanova_question]

Which element would have the greater difference between the first ionization ene Science Assignment Help

Which element would have the greater difference between the first ionization energy and the second ionization energy?
	(a)	potassium
	(b)	calcium
	(c)	Both should have the same differences because they are in the same period of the periodic table.

Which element would have the greater difference between the first ionization ene Science Assignment Help[supanova_question]

If 1.45 J of heat are added to a 2.00 g sample of aluminum metal and the tempera Science Assignment Help

If 1.45 J of heat are added to a 2.00 g sample of aluminum metal and the temperature of the metal increases by 0.798 ^oC, what is the specific heat of aluminum?
	(a)	0.579 J/g deg
	(b)	0.909 J/g deg
	(c)	1.68 J/g deg
	(d)	3.63 J/g deg

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the correct net-ionic equation of the reactions, in aqueous medium. Science Assignment Help

Cd(s) reduces Co²⁺(aq)

Mn(s) reduces Ni²⁺(aq)

Sn²⁺(aq) oxidizes Co(s)

Which of the following are oxidation-reduction reactions?
H⁺(aq) + HS⁻(aq) → H₂S(g)
Ca(s) + 2HCl(aq) → CaCl₂(aq) + H₂(g)
2K(s) + I₂(s) → 2KI(s)
Fe(s) + 2AgNO₃(aq) → Fe(NO₃)₂(aq) + 2Ag(s)

Which the foll aqueous solutions can be safely stored in a copper container?

NiCl₂
MgCl₂
HNO₃
HI
Hg(NO₃)₂

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Which element would have the higher electron affinity? Science Assignment Help

Which element would have the higher electron affinity?
	(a)	chlorine
	(b)	bromine
	(c)	Both should have the same electron affinity because they are in the same group of the periodic table and both will gain only 1 electron.

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Help Me WITH ALGEBRA Mathematics Assignment Help

1. Calculate the discriminant.

x2 + 2x – 2 = 0

–8

–4

2. What number would you have to add to both sides to
complete the square?

x2 + 12x = –6

144

–36

–144

3. Solve by using the perfect squares method.

x2 – 12x + 36 = 0

–18

–6

5. Lijuan is solving the equation x2 – x = 14 with the
quadratic formula. What values should she use for a, b, and c?

a = –1, b = 1,
c = –14

a = 1, b = –1,
c = –14

a = –1, b = 1,
c = 14

a = 1, b = –1,
c = 14

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Which statement is true regarding chemical bonds? Science Assignment Help