If a sample is thought to be several million years old, which method would best help to determine its absolute age?

What 12 letter word explains the protection of animals and resources here on Earth?

mezya [45]

Conservation

conservation is the act of protecting animals and resources for current and future generations

7 0

2 years ago

6) A 0.20 ml CO2 bubble in a cake batter is at 27°C. In the oven it gets

Nata [24]

Answer: The new volume of cake is 1.31 mL.

Explanation:

Given: $V_{1}$ = 0.20 mL, $T_{1} = 27^{o}C$

$V_{2}$ = ?, $T_{2} = 177^{o}C$

Formula used to calculate new volume is as follows.

$\frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}$

Substitute the values into above formula as follows.

$\frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}\\\frac{0.20 mL}{27^{o}C} = \frac{V_{2}}{177^{o}C}\\V_{2} = 1.31 mL$

Thus, we can conclude that the new volume of cake is 1.31 mL.

5 0

2 years ago

Which of these describes an endothermic process?

oksian1 [2.3K]

Answer:

Put up the answer choices

Explanation:

endothermic means absorbing heat

5 0

2 years ago

Read 2 more answers

What was the action between the 2 atoms in an ionically bonded compound that caused that ionic bond to form in the first place?

Andreas93 [3]

Ionic bonds form between two elements that have a very large difference in electronegativity ie. a metal and a non-metal. The electronegative element will want an electron to make it stable whilst the less electronegative element wants to donate an electron to make it stable. Therefore the metallic element donates a electron to the non-metal and both become ions, which attract each other. Eg. Na becomes Na+ and Cl becomes Cl-, the opposite charges attract, forming the bond.

3 0

2 years ago

The overall cell reaction occurring in an alkaline battery isZn(s) + MnO₂(s) + H₂O(l) → ZnO(s) + Mn(OH)₂(s) (b) If 4.50 g of zin

Airida [17]

5.911 grams of manganese dioxide and 1.224 gram of water are consumed.

<h3>What is Balanced Chemical Equation ?</h3>

The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.

The given reaction balanced equation is:

Zn(s) + MnO₂(s) + H₂O(l) → ZnO(s) + Mn(OH)₂(s)

<h3>How to find the number of moles ?</h3>

To find the number of moles use the expression:

Number of moles = $\frac{\text{Given mass}}{\text{Molar mass}}$

Here,

Mass of Zn = 4.50 g

Molar mass of Zn = 65.4 g/mol

Now put the value in above expression

Number of moles of Zn = $\frac{\text{Given mass}}{\text{Molar mass}}$

= $\frac{4.5\ g}{65.4\ \text{g/mol}}$

= 0.068 mol

Mass of MnO₂ = Moles of MnO₂ × Molar mass of MnO₂

= 0.068 mol × 86.9368 g/mol

= 5.911 g

Mass of H₂O = Moles of H₂O × Molar mass of H₂O

= 0.068 mol × 18.0 g/mol

= 1.224 g

Thus from the above conclusion we can say that 5.911 grams of manganese dioxide and 1.224 gram of water are consumed.

Learn more about the Balanced chemical equation here: brainly.com/question/26694427

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4 0

1 year ago