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s344n2d4d5 [400]
3 years ago
6

A scientist who digs for and studies fossils is called a __________. (1 point) Fossils can be the __________ or __________ of di

nosaurs and are formed by __________ and __________. (4 points) The tree sap that insects can get caught and fossilized in is called __________. (1 point) When an animal dies, its remains are either __________ or they __________ away. (2 points) Over time, the remains of an animal are covered with mud and sand called __________. (1 point) List two ways in which the skeletons of animals get to the surface. (2 points) In what kind of rocks do we find fossils? (4 points
Chemistry
1 answer:
gizmo_the_mogwai [7]3 years ago
3 0

Answer:First one is acheolgogist

Explanation:

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How many valence electrons would there be for the element with the<br> following orbital diagram?
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Answer:

6

Explanation:

The p orbital needs 2 more electrons.

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Q2. The table gives the composition of three particles.
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Answer:

The proton and electrons are equal,

15protons and 15electrons

Explanation:

An atom is the smallest electrical neutral particle of an element so it means that every atom have same number of protons and electrons.

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What is the temperature of 0.47 mol of gas at a pressure of 1.5 atm and a volume of 10.5 l ?
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The temp is 0.002448 of the equation
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In the formate ion, hco2− which of the atoms in the ion have pπ orbitals?
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3 years ago
How many CaF are in a 1.7x10^25 please I need help fast!!
Gemiola [76]
<h3>Answer:</h3>

28 mol CaF

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

  • Using Dimensional Analysis
<h3>Explanation:</h3>

<u>Step 1: Define</u>

[Given] 1.7 × 10²⁵ molecules CaF

[Solve] moles CaF

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

  1. [DA] Set up:                                                                                                          \displaystyle 1.7 \cdot 10^{25} \ molecules \ CaF(\frac{1 \ mol \ CaF}{6.022 \cdot 10^{23} \ molecules \ CaF})
  2. [DA] Multiply/Divide [Cancel out units]:                                                         \displaystyle 28.2298 \ moles \ CaF

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 2 sig figs.</em>

28.2298 mol CaF ≈ 28 mol CaF

7 0
3 years ago
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