question 3\nwhat is the mass of an object with a density of 2.50 g/cm³ and a volume of 17.50 ml?\n44 g\n50…

question 3\nwhat is the mass of an object with a density of 2.50 g/cm³ and a volume of 17.50 ml?\n44 g\n50 g\n18 g/ml\n11 g\nquestion 4\nthe reaction below is not balanced.\nc₂h₆o + 2o₂ → 2co₂ + 3h₂o\nwhich of the following best describes why the reaction is not balanced?\nthe oxygen atoms are not balanced.\nthere are 3 reactant molecules and 5 product molecules.\nthe carbon atoms are not balanced.\nthe hydrogen atoms are not balanced.\nquestion 5\nuse the table to answer the question below\n| substance | mass (g) | volume (cm³) | density (g/cm³) |\n|--|--|--|--|\n| copper | 5.0 | 0.56 | 8.93 |\n| copper | 10.0 | 1.12 | 8.93 |\n| zinc | 15.0 | 2.10 | 7.14 |\n| zinc | 20.0 | 2.80 | 7.14 |\n| lead | 25.0 | 2.20 | 11.36 |\n| lead | 30.0 | 2.64 | 11.36 |\nwhich conclusion is supported by the data in the table?\nby increasing the volume of a substance, its mass will decrease.\nby increasing the volume of a substance, its density will decrease.\nby increasing the mass of a substance, its volume will increase.\nby increasing the mass of a substance, its density will increase.

question 3\nwhat is the mass of an object with a density of 2.50 g/cm³ and a volume of 17.50 ml?\n44 g\n50 g\n18 g/ml\n11 g\nquestion 4\nthe reaction below is not balanced.\nc₂h₆o + 2o₂ → 2co₂ + 3h₂o\nwhich of the following best describes why the reaction is not balanced?\nthe oxygen atoms are not balanced.\nthere are 3 reactant molecules and 5 product molecules.\nthe carbon atoms are not balanced.\nthe hydrogen atoms are not balanced.\nquestion 5\nuse the table to answer the question below\n| substance | mass (g) | volume (cm³) | density (g/cm³) |\n|--|--|--|--|\n| copper | 5.0 | 0.56 | 8.93 |\n| copper | 10.0 | 1.12 | 8.93 |\n| zinc | 15.0 | 2.10 | 7.14 |\n| zinc | 20.0 | 2.80 | 7.14 |\n| lead | 25.0 | 2.20 | 11.36 |\n| lead | 30.0 | 2.64 | 11.36 |\nwhich conclusion is supported by the data in the table?\nby increasing the volume of a substance, its mass will decrease.\nby increasing the volume of a substance, its density will decrease.\nby increasing the mass of a substance, its volume will increase.\nby increasing the mass of a substance, its density will increase.

Answer

Pregunta 3

Explicación:

Paso 1: Convertir volumen a cm³

Sabemos que 1 mL = 1 cm³, entonces 17.50 mL = 17.50 cm³.

Paso 2: Usar la fórmula de densidad

La densidad $\rho=\frac{m}{V}$, donde $\rho$ es la densidad, $m$ es la masa y $V$ es el volumen. Re - arreglamos la fórmula para encontrar la masa $m=\rho\times V$. Dado que $\rho = 2.50\ g/cm^{3}$ y $V = 17.50\ cm^{3}$, entonces $m=2.50\ g/cm^{3}\times17.50\ cm^{3}=43.75\ g\approx44\ g$.

Respuesta:

44 g

Pregunta 4

Explicación:

Contemos los átomos en el reactivo y el producto. En el reactivo $C_{2}H_{6}O + 2O_{2}$: átomos de carbono = 2, átomos de hidrógeno = 6, átomos de oxígeno = 1 + 4=5. En el producto $2CO_{2}+3H_{2}O$: átomos de carbono = 2, átomos de hidrógeno = 6, átomos de oxígeno = 4 + 3 = 7. Los átomos de oxígeno no están balanceados.

Respuesta:

The oxygen atoms are not balanced.

Pregunta 5

Explicación:

Observando la tabla, para cada sustancia (copper, zinc, lead), cuando la masa aumenta, el volumen también aumenta y la densidad permanece constante. Esto se debe a que la densidad es una propiedad intrínseca de la sustancia y no depende de la masa o el volumen en sí misma, siempre y cuando la temperatura y la presión permanezcan constantes.

Respuesta:

By increasing the mass of a substance, its volume will increase.