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Ksivusya [100]
4 years ago
15

What is the gram-formula mass of Ca3(PO4)2

Chemistry
1 answer:
Sindrei [870]4 years ago
4 0
310.17 grams so there
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Which of the three subatomic particles have a neutral charge? *
Delvig [45]

Answer:

<h2><em>A. Neutron</em></h2>

Explanation:

Neutrons and protons are found in the nucleus of an atom. BUT unlike Protons <em>(Positive charge/ P an P is how I remember it) </em>or Electrons, which have a <em>negative charge,</em> Neutrons have zero charge which means they are neutral particles. <em>(Neutral an Neutron both start with N.)</em>

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Good luck.

<em>Lb.</em>

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7 0
3 years ago
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If an atom has 29 electrons and a mass of 64, and it is neutral, what is the name of the atom?
jek_recluse [69]

Explanation:

Copper has an atomic number of 29, so it contains 29 protons and 29 electrons. ... The atomic weight of copper is 64; it has 29 protons and 35 neutrons.

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3 years ago
Use the de Broglie's Wave Equation to find the wavelength of an electron moving at 7.3 × 106 m/s. Please show your work. Note: h
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Answer:

\lambda=9.96\times 10^{-11}\ m

Explanation:

The expression for the deBroglie wavelength is:

\lambda=\frac {h}{m\times v}

Where,  

\lambda is the deBroglie wavelength  

h is Planck's constant having value 6.62607\times 10^{-34}\ Js

m is the mass of electron having value 9.11\times 10^{-31}\ kg

v is the speed of electron.

Given that v = 7.3\times 10^6\ m/s

Applying in the equation as:

\lambda=\frac {h}{m\times v}

\lambda=\frac{6.62607\times 10^{-34}}{9.11\times 10^{-31}\times 7.3\times 10^6}\ m

\lambda=\frac{10^{-34}\times \:6.626}{10^{-25}\times \:66.503}\ m

\lambda=\frac{6.626}{10^9\times \:66.503}\ m

\lambda=9.96\times 10^{-11}\ m

6 0
3 years ago
1. Which phase change is accompanied by the release of heat? A) H20(s)--&gt; H2O(g) B) H20(l) -&gt;H2O(s) C) H20(l)→ H2O(g) D) H
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Answer:

B, liquid to solid.

Explanation: Since heat is being released, the particles for H2O would clump up. Heat is basically being taken out.

5 0
3 years ago
Nitrogen (N) is much more electronegative than hydrogen (H). Which of the following statements is correct about the atoms in amm
9966 [12]

Answer: Option E. There are covalent bonds between the hydrogen atoms

Explanation:

7 0
4 years ago
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