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3 years ago

Movement occurs when tue skeletal sysworks with the____system

Chemistry

2 answers:

Vlada [557]3 years ago

5 0

Movement occurs when the skeletal system works with the muscular system.

Vilka [71]3 years ago

5 0

Movement occurs when the skeletal system works with the muscular system

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What is the most effective method for monitoring the effects of global warming?

balu736 [363]

Answer: D) Monitor the sea level over set period of time.

Since global warming causes land ice to melt, that water goes into the ocean to raise sea levels. This is an effect of global warming.

Choices A through C are things to measure if you want to measure causes of global warming, so we can rule those out.

4 0

3 years ago

Explain how the relative atomic mass and the mass number of elements are different and hence why some elements have relative ato

padilas [110]

This is because the relative atomic mass is the sum of the no of protons and neutrons while the atomic no is of the former only. it is not a whole number it is th average weighted masses of the various isotopes of the element multiplied by their corresponding relative abundance. pls thank me and mark me briniest

6 0

3 years ago

9. Assuming all other conditions are constant, what is the new pressure of a gas if the original pressure is 50 kPa and the Kelv

notsponge [240]

Answer:

Option a (100 kPa) is the appropriate option.

Explanation:

The given value is:

Original pressure,

P₁ = 50 kPa

Let the new pressure be "x".

Now,

⇒ $\frac{P1}{T_1} =\frac{P_2}{T_2}$

On substituting the values, we get

⇒ $\frac{50}{T_1} =\frac{x}{2T_1}$

On applying cross-multiplication, we get

⇒ $x = 50\times 2$

⇒ $=100 \ kPa$

Thus the answer above is the right one.

8 0

3 years ago

The decomposition of nitramide in aqueous solution at 25 °C NH2NO2(aq)N2O(g) + H2O(l) is first order in NH2NO2 with a rate const

HACTEHA [7]

Answer:

$[NH_2NO_2]=0.0868M$

Explanation:

Hello,

In this case, for the given chemical reaction, the first-order rate law is:

$r=\frac{d[NH_2NO_2]}{dt} =-k[NH_2NO_2]$

Which integrated is:

$[NH_2NO_2]=[NH_2NO_2]_0exp(-kt)$

Thus, the concentration after 31642.0 s for a 0.384-M solution is:

$[NH_2NO_2]=0.384M*exp(-4.70x10^{-5}s^{-1}*31642.0s)\\$

$[NH_2NO_2]=0.0868M$

Best regards.

6 0

3 years ago

Read 2 more answers

Which of the statements below best describes the following reaction? HCl(aq) + KOH(aq) -> KCl(aq) + H2O(l)a. Hydrochloric aci

bonufazy [111]

Answer:

c. Aqueous solutions of hydrochloric acid and potassium hydroxide react to produce aqueous potassium chloride and water.

Explanation:

The reaction is represented by the chemical equation

HCl(aq) + KOH(aq) → KCl(aq) + H₂O(l)

The letters "aq" in parenthesis, next to the chemical formula of a compound, is used to indicate "aqueous" phase. It means that the compound is dissolved in water or, what is the same, it is an aqueous solution.

Hence, the choice C. is the best representation or description of the given reaction:

The left side or reactant side is:

HCl(aq) + KOH(aq)

↑ ↑ ↑

aqueous solution of react aqueous solution of

hydrochloric acid with potassium hydroxide

The right side or product side is:

KCl(aq) + H₂O(l)

↑ ↑ ↑

aqueous and water

potassium chloride

8 0

3 years ago