Neutron stars form when large stars collapse. They are very dense, having an average density of 4.8x1017 kg star, what volume in cubic millimeters (mm3) weighs 113,400 kg? Your 8. If we were able to take a piece of a neutron answer must have the correct number of sig figs.

Determine the number of each type of atom in each of the following formulas. Part A NH4Cl Express your answers as integers. Enter your answers numerically separated by commas. NN, NH, NC1 = = Submit Part B ΠΙ ΑΣΦ Request Answer NMg, Np, No = Submit Mg3(PO4)2 Express your answers as integers. Enter your answers numerically separated by commas. ΠΫΠΙ ΑΣΦ ? Request Answer ?

Assume the observable Universe is charge neutral, and that it contains n nuclei (hydrogen plus helium nuclei, ignoring other elements).  Take the helium mass fraction as 1/4.  How many electrons are there in the observable Universe?  Enter your answer in scientific notation with one decimal place.   n = 7*10^80

How many gold atoms are in an 0.214-ounce, 18 K gold bracelet? (18 K gold is 75% gold by mass.) Express your answer using two significant figures.

Use the information given to you  below to solve/calcualte the rest of the table. Please show all work on how you reached your answers.  Formula of Hydrate: CuSo4*5H2O Weight of Hydrate and Evaporating Dish: 63.961 g Weight of Empty Evaporating Dish: 54.020 g Weight of Hydrate: ? Weight of Sample and Evaporating Dish after 1st Heating: 60.435 g  Weight of Sample and Evaporating Dish after 2nd Heating: 60.381 g Weight of Sample and Evaporating Dish after 3rd heating: 60.381 g Weight of Anydride and Evaporating Dish: 60.381 g Weight of Water lost: ? Weight of Anhydride: ? Experimental Percent Water: ?  Theoretical Percent Water: ?  Percent Error: ? Moles of Water: ? Moles of Anhydride: ? Ratio of Moles of Water to Molves of Anhydride: ? Experimental Formule of Hydrate: ? Please show all work on how you came to each answer. Thank you!

tributi X Normal Distributi X ample Work rmat Tools Extensions Help locument/d/1KWoB0hrXolu7UEKbq4f8LBMHfpjHBRVU3qUzVI7K80U/edit Saved to Drive Normal text I 2022-2023 Mr. R X - I ▼ | Calibri 1 16 11. Which quantity is used to define 1 atomic mass unit? 3 100 Copy of Chern B x I UA 4 5 hp 4/27 - Unit 5.mp4 X particles. 12. How many molecules are there in 2 g of water (H₂O)? HINT: Molar mass of water is 18 g/mol Pathway: mass → moles → molecules E Did You Know? The word mole represents a specific number of objects, 6.022 × 10²¹ , just as the word dozen represents a specific number of objects, 12. The molar mass is the mass of a substance that contains 6.022 × 10²¹ DC Normal DE VE E 127 64°F Mos

The element rubidium consists of two isotopes, one having an isotopic mass of 84.912 and the other having an isotopic mass of 86.920.  Determine the percentage abundance of the lighter isotope.  Record your answer, to the correct number of significant figures, in the box below; do not include the units of your final answer.  Then show your numerical set-up(s) in the next question.