下表是碳酸钠和氯化钠在不同温度时的溶解度。请回答下列问题。                                                                                                                                                                                       

温度/℃		0	10	20	30	40
溶解度/g	NaCl	35.7	35.8	36.0	36.3	36.6
	Na2CO3	7.0	12.5	22.0	40.0	48.8