What is the mass of Na2CO3∙10H2O that is needed to make 100 ml of sodium carbonate solution with the mass percentage of Na2CO3∙ equal to 2%? The density of the final solution is equal to 1 g/ml.

I need help with this equation. I'm not that smart so I can't figure it out- Who is Adam? Why does the first Gravedigger say Adam was a gentlemen In a large kitchen what is meant by the partie system? Who devised this system? I need help with this problem Complete the ratio table.9 118 227 336 45 5 Darcy was working on a presentation on playing chess. Because she chose the Checkerboard animation for her slide title, she had to use the same animation for her bullet points.TrueFalse PLEASE HURRY!!!Wyatt has a database to keep track of an enormous collection of videos. How can Wyatt find the record for the game Lost on Mars?a)sort the datab)filter the datac)query the datad)edit the data #1 - What is a pure substance? *1 pointtwo or more atoms held together by chemical bondsthe attractive force that holds atoms togethera sample of matter that has specific chemical and physical propertiesa pure substance made up of two or more different types of atoms joined by chemical bonds#2 - TRUE OF FALSE: Water is a pure substance.1 pointTrueFalse#3 - What is an atom? *1 pointthe smallest unit of an element that keeps the properties of that elementthe attractive force that holds atoms togethera sample of matter that has specific chemical and physical propertiesa pure substance made up of two or more different types of atoms joined by chemical bonds#4 - What is a molecule? *1 pointtwo or more atoms held together by chemical bondsthe attractive force that holds atoms togethera sample of matter that has specific chemical and physical propertiesa pure substance made up of two or more different types of atoms joined by chemical bonds#5 - What is a chemical bond? *1 pointtwo or more atoms held together by chemical bondsthe attractive force that holds atoms togethera sample of matter that has specific chemical and physical propertiesa pure substance made up of two or more different types of atoms joined by chemical bonds#6 - TRUE OR FALSE: Molecules are all the same size. *1 pointTrueFalse#7 - What is a compound? *1 pointtwo or more atoms held together by chemical bondsthe attractive force that holds atoms togethera sample of matter that has specific chemical and physical propertiesa pure substance made up of two or more different types of atoms joined by chemical bonds#8 - TRUE OR FALSE: Compounds never form in a fixed ratio. *1 pointTrueFalse#9 - TRUE OR FALSE: The structure of matter at the atomic and molecular levels is too small to observe directly. *1 pointTrueFalse#10 - TRUE OR FALSE: A complex molecule may contain a few atoms bonded together. A simple molecule may contain thousands of atoms. *1 pointTrueFalse#11 - What is a crystal? *1 pointtwo or more atoms held together by chemical bondsa substance in which the particles are arranged in an orderly, geometric, and repeating patterna sample of matter that has specific chemical and physical propertiesa pure substance made up of two or more different types of atoms joined by chemical bonds#12 - TRUE OR FALSE: Diamond and graphite are both made of carbon atoms. *1 pointTrueFalse Im being timed help!One purpose of the Iroquois Confederacy was to -establish peace among its member tribes-establish peace with Southeastern Indian bands-establish peace with Northeastern Indian bands -establish peace among all American Indian federations. will give brainliest!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1 What is the degree of 24x? change into passive voice. 1. Shakespeare wrote Macbeth.2. She never informs us about anything.3. They are discussing an important issue in the meeting.4.She is knitting a sweater.5. The hunter has killed a rhino. Belleville High School offers classes on three different foreign languages. Let A be the event that a student is in eleventh grade, and let B be the event that a student is enrolled in French class. A 5-column table has 4 rows. The first column has entries Tenth grade, eleventh grade, twelfth grade, total. The second column is labeled Spanish with entries 107, 56, 89, 252. The third column is labeled French with entries 122, 68, 82, 272. The fourth column is labeled German with entries 6, 14, 8, 28. The fifth column is labeled Total with entries 235, 138, 179, 552. Which statement is true about whether A and B are independent events? A and B are independent events because P(AB) = P(A). A and B are independent events because P(AB) = P(B). A and B are not independent events because P(AB) P(A). A and B are not independent events because P(AB) P(B). The chart shows codons and their corresponding amino acid. What amino acid is represented by the codon CAC Which of the following would be an appropriate Title for this map? 11. In the diagrams below the rows of green tiles are surrounded by white tilesFind a formula for the number of white tiles which would be needed tosurround a row of n green tiles.Hii please help!!! Show work find the slope and the y-intercept of the line. Mis amigos _____ ensalada con verduras y arroz. (comer) QUICKWhich of these is a ball and stick model? Omg please help me its due today put it Im your own words I will give 100 points and brainliest if you lie I will report